Relevant bibliographies by topics / Soil organic carbon mineralization

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Academic literature on the topic 'Soil organic carbon mineralization'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Soil organic carbon mineralization"

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Tito, Gilvanise Alves, Josely Dantas Fernandes, Lucia Helena Garófalo Chaves, Hugo Orlando Carvallo Guerra, and Edilma Rodrigues Bento Dantas. "Organic carbon mineralization of the biochar and organic compost of poultry litter in an Argisol." Semina: Ciências Agrárias 42, no. 6 (August 12, 2021): 3167–84. http://dx.doi.org/10.5433/1679-0359.2021v42n6p3167.

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The dynamics of the organic residues added to the soil are closely related to its mineralization rate. Therefore, the present study aimed to evaluate the organic carbon mineralization in soil samples incubated with different doses of biochar and organic compost from poultry litter. Carbon mineralization was evaluated experimentally by measuring the C-CO2 liberated by incubating 200 g of soil mixed with different doses 0, 5, 10, 15, and 20 t ha-1 of both biochar and organic compost for 61 days. The soil microbial activity, and consequently the carbon mineralization, increased with the application of doses of biochar and organic compost from the poultry litter. The highest C-CO2 mineralization was observed in the treatments that received organic compost. The carbon mineralization process followed chemical kinetics with two simultaneous reactions. The greatest amount of released and accumulated C-CO2 was observed in the soil incubated with 15 and 20 t ha-1 of organic compost from the poultry litter. The doses of biochar did not influence the content of mineralized carbon; this behavior was not verified with the use of this compost, whose highest content corresponded to 85.69 mg kg-1, applying 20 t ha-1.
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She, Ruihuan, Yongxiang Yu, Chaorong Ge, and Huaiying Yao. "Soil Texture Alters the Impact of Salinity on Carbon Mineralization." Agronomy 11, no. 1 (January 11, 2021): 128. http://dx.doi.org/10.3390/agronomy11010128.

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Soil salinization typically inhibits the ability of decomposer organisms to utilize soil organic matter, and an increase in soil clay content can mediate the negative effect of salinity on carbon (C) mineralization. However, the interactive effects of soil salt concentrations and properties on C mineralization remain uncertain. In this study, a laboratory experiment was performed to investigate the interactive effects of soil salt content (0.1%, 0.3%, 0.6% and 1.0%) and texture (sandy loam, sandy clay loam and silty clay soil with 6.0%, 23.9% and 40.6% clay content, respectively) on C mineralization and microbial community composition after cotton straw addition. With increasing soil salinity, carbon dioxide (CO2) emissions from the three soils decreased, but the effect of soil salinity on the decomposition of soil organic carbon varied with soil texture. Cumulative CO2 emissions in the coarse-textured (sandy loam and sandy clay loam) soils were more affected by salinity than those in the fine-textured (silty clay) soil. This difference was probably due to the differing responses of labile and resistant organic compounds to salinity across different soil texture. Increased salinity decreased the decomposition of the stable C pool in the coarse-textured soil, by reducing the proportion of fungi to bacteria, whereas it decreased the mineralization of the active C pool in the fine-textured soil through decreasing the Gram-positive bacterial population. Overall, our results suggest that soil texture controlled the negative effect of salinity on C mineralization through regulating the soil microbial community composition.
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She, Ruihuan, Yongxiang Yu, Chaorong Ge, and Huaiying Yao. "Soil Texture Alters the Impact of Salinity on Carbon Mineralization." Agronomy 11, no. 1 (January 11, 2021): 128. http://dx.doi.org/10.3390/agronomy11010128.

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Soil salinization typically inhibits the ability of decomposer organisms to utilize soil organic matter, and an increase in soil clay content can mediate the negative effect of salinity on carbon (C) mineralization. However, the interactive effects of soil salt concentrations and properties on C mineralization remain uncertain. In this study, a laboratory experiment was performed to investigate the interactive effects of soil salt content (0.1%, 0.3%, 0.6% and 1.0%) and texture (sandy loam, sandy clay loam and silty clay soil with 6.0%, 23.9% and 40.6% clay content, respectively) on C mineralization and microbial community composition after cotton straw addition. With increasing soil salinity, carbon dioxide (CO2) emissions from the three soils decreased, but the effect of soil salinity on the decomposition of soil organic carbon varied with soil texture. Cumulative CO2 emissions in the coarse-textured (sandy loam and sandy clay loam) soils were more affected by salinity than those in the fine-textured (silty clay) soil. This difference was probably due to the differing responses of labile and resistant organic compounds to salinity across different soil texture. Increased salinity decreased the decomposition of the stable C pool in the coarse-textured soil, by reducing the proportion of fungi to bacteria, whereas it decreased the mineralization of the active C pool in the fine-textured soil through decreasing the Gram-positive bacterial population. Overall, our results suggest that soil texture controlled the negative effect of salinity on C mineralization through regulating the soil microbial community composition.
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Chapman, Samantha K., Matthew A. Hayes, Brendan Kelly, and J. Adam Langley. "Exploring the oxygen sensitivity of wetland soil carbon mineralization." Biology Letters 15, no. 1 (January 2019): 20180407. http://dx.doi.org/10.1098/rsbl.2018.0407.

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Soil oxygen availability may influence blue carbon, which is carbon stored in coastal wetlands, by controlling the decomposition of soil organic matter. We are beginning to quantify soil oxygen availability in wetlands, but we lack a precise understanding of how oxygen controls soil carbon dynamics. In this paper, we synthesize existing data from oxic and anoxic wetland soil incubations to determine how oxygen controls carbon mineralization. We define the oxygen sensitivity of carbon mineralization as the ratio of carbon mineralization rate in oxic soil to this rate in anoxic soil, such that higher values of this ratio indicate greater sensitivity of carbon mineralization to oxygen. The estimates of oxygen sensitivity we derived from existing literature show a wide range of ratios, from 0.8 to 33, across wetlands. We then report oxygen sensitivities from an experimental mesocosm we developed to manipulate soil oxygen status in realistic soils. The variation in oxygen sensitivity we uncover from this systematic review and experiment indicates that Earth system models may misrepresent the oxygen sensitivity of carbon mineralization, and how it varies with context, in wetland soils. We suggest that altered soil oxygen availability could be an important driver of future blue carbon storage in coastal wetlands.
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Li, Wanying, Zhen Guo, Juan Li, and Jichang Han. "Response of the characteristics of organic carbon mineralization of soft rock and soil composed of sand to soil depth." PeerJ 9 (June 4, 2021): e11572. http://dx.doi.org/10.7717/peerj.11572.

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The addition of soft rock to aeolian sandy soil can improve the level of fertility and ability of the soil to sequester carbon, which is of substantial significance to improve the ecological environment of the Mu Us sandy land and supplement newly added cultivated land. S oft rock and sand were combined using the ratio (v/v) of 0:1 (CK), 1:5 (S1), 1:2 (S2), and 1:1 (S3). The process of mineralization of organic carbon at different depths (0–10 cm, 10–20 cm, and 20–30 cm) in the combined soil was studied by 58 days of incubation indoors at a constant temperature. The content of soil nutrient s increased significantly under the S2 and S3 treatments and was higher in the 0–10 cm soil depth. The mineralization of rate of soil organic carbon (SOC) of different combination ratios can be divided into three time periods: the stress mineralization stage (1–7 d), the rapid mineralization stage (7–9 d) and the slow mineralization stage (9–58 d). At the end of incubation, the rates of mineralization of SOC and accumulated mineralization amount (Ct) were relatively large in the 0–10 cm soil depth, followed by the 10–20 cm and 20–30 cm soil layers , indicating that the stability of SOC in the surface layer was poor, which is not conducive to the storage of carbon. The content of potentially mineralizable organic carbon (C0) in the soil was consistent with the trend of change of Ct. Compared with the CK treatment, the cumulative organic carbon mineralization rate (Cr) of the S2 and S3 treatment s decreased by 7.77% and 6.05%, respectively; and the C0/SOC decreased by 22.84% and 15.55%, respectively. Moreover, the Cr and C0/SOC values in the 10–20 cm soil depth were small, which indirectly promoted the storage of organic carbon. With the process of SOC mineralization, the contents of soil microbial biomass carbon (SMBC) and dissolved organic carbon (DOC) tended to decrease compared with the initial contents, with larger amplitudes in the 20–30 cm and 10–20 cm soil depth s, respectively. SOC, total nitrogen, available potassium, SMBC and DOC were all closely related to the process of mineralization of organic carbon. Therefore, the accumulation of soil carbon could be enhanced when the proportion of soft rock and sand composite soil was between 1:2 and 1:1, and the 10–20 cm soil depth was relatively stable. These results provide a theoretical basis for the improvement of desertified land.
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Guo, Zhen, Jichang Han, Yan Xu, Yangjie Lu, Chendi Shi, Lei Ge, Tingting Cao, and Juan Li. "The mineralization characteristics of organic carbon and particle composition analysis in reconstructed soil with different proportions of soft rock and sand." PeerJ 7 (September 16, 2019): e7707. http://dx.doi.org/10.7717/peerj.7707.

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The organic carbon mineralization process reflects the release intensity of soil CO2. Therefore, the study of organic carbon mineralization and particle composition analysis of soft rock and sand compound soil can provide technical support and a theoretical basis for soil organic reconstruction (soil structure, materials and biological nutrition). Based on previous research, four treatments were selected: CK (soft rock:sand=0:1), C1 (soft rock:sand=1:5), C2 (soft rock:sand=1:2) and C3 (soft rock:sand=1:1), respectively. Specifically, we analyzed the organic carbon mineralization process and soil particle composition by lye absorption, laser granulometer, and scanning electron microscope. The results showed that there was no significant difference in organic carbon content between C1, C2 , and C3 treatments, but they were significantly higher than in the CK treatment (P < 0.05). The organic carbon mineralization rate in each treatment accords with a logarithmic function throughout the incubation period (P < 0.01), which can be divided into a rapid decline phase in days 1 to 11 followed by a steady decline phase in days 11 to 30. The cumulative mineralization on the 11th day reached 54.96%–74.44% of the total mineralization amount. At the end of the incubation, the cumulative mineralization and potential mineralizable organic carbon content of the C1, C2 and C3 treatments were significantly higher than those of the CK treatment. The cumulative mineralization rate was also the lowest in the C1 and C2 treatment. The turnover rate constant of soil organic carbon in each treatment was significantly lower than that of the CK treatment, and the residence time increased. With the increase of volume fraction of soft rock, the content of silt and clay particles increased gradually, the texture of soil changed from sandy soil to sandy loam, loam , and silty loam, respectively. With the increase of small particles, the structure of soil appear ed to collapse when the volume ratio of soft rock was 50%. A comprehensive mineralization index and scanning electron microscopy analysis, when the ratio of soft rock to sand volume was 1:5–1:2, this can effectively increase the accumulation of soil organic carbon. Then, the distribution of soil particles was more uniform, the soil structure was stable (not collapsed), and the mineralization level of unit organic carbon was lower. Our research results have practical significance for the large area popularization of soft rock and sand compound technology.
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MOTT, S. C., J. R. DAVENPORT, and R. L. THOMAS. "MINERALIZATION AND REDISTRIBUTION OF CARBON FROM SURFICIAL AND BURIED CORN STALKS." Canadian Journal of Soil Science 68, no. 4 (November 1, 1988): 687–93. http://dx.doi.org/10.4141/cjss88-066.

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Although corn (Zea mays L.) stalks contribute to the total quantity of organic material in soil, their direct influence on soil structural stabilization may be small. In a laboratory study 14C-labelled corn stalks were placed on the surface of, or buried at, a 5-cm depth in a sandy loam soil. The soils were incubated at 25 °C for 119 d to determine the extent of organic carbon redistribution. Approximately 70% of the buried stalk carbon and 90% of the surface stalk carbon remained in the soil after incubation. Most of the residual carbon was identifiable as stalk tissue. Less than 5% of the added carbon was intermixed with the soil. Both the lack of C redistribution in the soil and the high loss of the mineralized 14C as CO2 stress the importance of the initial distribution of added organic materials in soils. The results imply that corn stover is a poor source of soil C and that it would be best used as a surface protectant against raindrop impact. Key words: Carbon mineralization, carbon redistribution, corn stalks, soil structure
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Aka Sağlıker, Hüsniye, and Neslişah Mutlu. "Doğu Akdeniz Bölgesi Sanayi Alanı Topraklarında Karbon Mineralizasyonu." Turkish Journal of Agriculture - Food Science and Technology 6, no. 7 (July 20, 2018): 940. http://dx.doi.org/10.24925/turjaf.v6i7.940-944.1935.

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In this study; it was determined some trace element contents [Cu, Mn, Fe and Zn (mg/kg)] and carbon mineralization (28° C, 45 days) in three soil sampled depending on the distance from three different plots of Industrial Zone which has a great number of iron and steel and metal industry enterprises and one soil sample from Osmaniye Korkut Ata University campus which is located far from this Industrial Zone. CO2 respiration method was used in carbon mineralization experiments. It was determined that trace element contents of these four soils was lower than the limit values. Carbon mineralization [15.0 mg/C(CO2)/100 g DS] of the soil number 1 sampled nearly the Industial Zone was significantly lower than campus soil numbered 4 [30.0 mg/C(CO2)/100 g DS]. The similarity were also observed among the carbon mineralization rates of four soils and three soils of the Industrial Zone were found significantly lower than the campus soil. All these findings exhibited that the carbon mineralization and trace element contents of the soils did not change with distance of Industrial Zone; the soil may vary depending on the organic carbon and nitrogen contents together with pH.
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Ansong Omari, Richard, Dorothea Bellingrath-Kimura, Yoshiharu Fujii, Elsie Sarkodee-Addo, Kwame Appiah Sarpong, and Yosei Oikawa. "Nitrogen Mineralization and Microbial Biomass Dynamics in Different Tropical Soils Amended with Contrasting Organic Resources." Soil Systems 2, no. 4 (November 23, 2018): 63. http://dx.doi.org/10.3390/soilsystems2040063.

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The use of location-specific and underutilized organic residues (OR) as soil amendments in small-holder agro-ecosystems is promising. Six ORs (Leucaena leucocephala, Centrosema pubescens, Gliricidia sepium, Pueraria phaseoloides, Azadirachta indica, and Theobroma cacao) were amended to three tropical soils each at 24 mg g−1 dry soil in 120-day incubation study to estimate their nitrogen (N) mineralization and microbial biomass carbon (C) dynamics. Inorganic N contents varied among ORs, soil type and incubation days. Regardless of soil type, Gliricidia had the highest inorganic N among the studied ORs. Mineralization rate of 1.4 to 1.5 mg N kg−1 soil day−1 was observed for Lego and Tec soils, respectively, and was twice higher than Nya soil. However, Nya soil released higher inorganic N than Tec and Lego soils, implying high N mineralization efficiency in the former. Consistent soil pH increase was respectively observed for Theobroma and Pueraria treatments in all soils. Moreover, Theobroma and Pueraria amendments showed the highest soil microbial biomass C (MBC) at the end of the incubation. The assessed soil properties likely affected by the dominant edaphic factors and management influenced differences in MBC and dissolved organic carbon (DOC) while OR quality indices controlled N mineralization. Thus, we conclude that soil properties and OR type are important factors for optimal utilization of organic resources.
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Moretti, Sarah Mello Leite, Edna Ivani Bertoncini, and Cassio Hamilton Abreu-Junior. "Carbon Mineralization in Soils Irrigated with Treated Swine Wastewater." Journal of Agricultural Science 9, no. 3 (February 13, 2017): 19. http://dx.doi.org/10.5539/jas.v9n3p19.

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Treated swine wastewater agricultural use can promote environmental and agronomical improvements, however, the inappropiate management of this organic load added on soil can cause unbalances in soil fertility and in availability of nutrients and/or contaminants. Thus, this study aim was evaluate the organic matter biodegradation of treated swine wastewater (WB) and diluted swine wastewater (WBD) applied in Oxisol clayey texture (CS) and in Ultisol (SS) with medium-sandy texture. The treatments studied were: R1 – CS control; R2 – irrigation with WB on CS; R3 – irrigation with WBD on CS; R4 – SS control; R5 – irrigation with WBD on SS; R6 – irrigation with WBD on SS. Three applications were done in flasks containing 500 g of soils sampled from depth of 0-20 cm, the C-CO2 evolutions and degradation fractions were quantified after each application. The results obtained were adjusted to first-order chemical kinetics model. More than half organic matter was biodegraded between 4 and 10 days of incubation, when higher WB amount was applied (33.3 mm). Sucessive WBD use caused degradation of organic matter remaning of previous application. Higher CO2 evolutions were obtained for Oxisol treatments due to higher carbon contents of this soil. SW use caused depletion of Ultisol native organic matter. However, the WB use in Oxisol provided accumulation of organic matter. Soon, the respirometry test evidenced the importance of evaluate the soil depuration capacity before agricultural use, since that this process can affect the contents of organic matter native of these soils and the availabity of nutrient/contaminant for soil-water-plant system.
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Dissertations / Theses on the topic "Soil organic carbon mineralization"

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Calias, Pangiotis. "Forest soil organic matter of a European transect : carbon mineralization in response to temperature." Thesis, University of Exeter, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363387.

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Ma, Qian. "Effects of Crop Residue Quality and Nitrogen Fertilization on Priming of Soil Organic Carbon Mineralization." Kyoto University, 2021. http://hdl.handle.net/2433/261632.

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Lynch, Madalyn Josephine. "A Measurement of Conservation Agriculture’s Effect on Nitrogen and Carbon Mineralization Rates for Agricultural Recommendations in Haiti’s Central Plateau." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51620.

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Much of Haitian agriculture is characterized by subsistence farming systems on eroded and nutrient-poor soils. Implementation of Conservation Agriculture systems has proven effective at improving soil quality and crop yield in many areas of the world, including areas similar to those in Haiti. While most Haitian smallholder farmers are highly resource-limited and adoption of new technologies is limited, these farmers are known to adopt new crops and practices if benefits that outweigh risks are demonstrated. Cover crops that help provide soil cover and increase nutrient mineralization are one of the most potentially beneficial changes that could be made on most smallholder farms. However, before specific cover crop recommendations can be made, their potential benefits need to be quantified. One field experiment in the summer of 2013 assessed decomposition rates and nutrient mineralization from common cash crops and two potential cover crops either on the soil surface or buried at 15 cm. The relative difficulty and expense of conducting these types of field trials led to the development and assessment of a laboratory-based system that could be used to simulate plant residue decomposition and nutrient release under controlled conditions. Additional benefits of a laboratory-based study include the ability to test significantly more treatment combinations than would likely be possible under field conditions and to control nearly all other experimental variables, other than the desired treatment comparisons.
Master of Science
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Lorenz, Klaus. "The role of microorganisms and organic matter quality for nutrient mineralization of carbon composition of organic layers in forests as influenced by site properties and soil management /." Stuttgart : Inst. für Bodenkunde und Standortslehre, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009736028&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Henriques, Hermano José Ribeiro. "Sistemas de manejo do solo para retomada do plantio direto." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153651.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A utilização das regiões de cerrado para a produção agrícola se estabeleceu inicialmente pelo uso intensivo do solo proporcionando alterações nos atributos físicos, químicos e biológicos de acordo com o tipo de manejo adotado. O experimento foi realizado na Fazenda de Ensino, Pesquisa e Ensino (FEPE-Cerrado), pertencente à Faculdade de Engenharia de Ilha Solteira, no município de Selvíria- MS, em um LATOSSOLO VERMELHO Distroférrico, de textura argilosa (EMBRAPA, 2013), nos anos de 2016 a 2017 teve como objetivo de comparar os sistemas de manejo do solo a ser adotada em safras seguidas para estabilização do plantio direto (SPD) nas culturas de soja (verão) e do sorgo (outono-inverno). O delineamento experimental foi de blocos ao acaso, com quatro repetições e sete tratamentos: sistema de semeadura direta contínuo (de 23 e 24 anos de implantação), sendo que cultivo mínimo, preparo convencional do solo com grade pesada e arado de aiveca seguida de três gradagens leves e plantio direto sobre cada destes manejos do solo realizados continuamente com o mesmo número de safras seguidas até a 7° e 8° safra. Para comparação de medias foram avaliados os dados biométricos das culturas da soja e do sorgo, atributos físicos do solo e quantidade de carbono orgânico total. Os resultados obtidos indicaram que os sistemas de semeadura direta contínuo apresentaram maior quantidade de estoque de carbono orgânico total. A elevação da produtividade de grãos de soja está diretamente relacionada à maior presença de plantas no estande final quando o solo foi preparado com grade pesada seguida do tempo de implantação como sistema plantio direto, diferentemente dos manejos de preparo do solo com grade pesada e arado de aiveca contínuo terem menor sobrevivência de plantas, refletiu diretamente na queda de produtividades de grãos de soja em razão do maior campo de visão ter facilitado o ataque de pássaros. Os mesmos tratamentos de manejos do solo adotados na cultura do sorgo apresentaram efeito nulo sobre características biométricas, demostrando que independentemente do tempo de implantação do SPD e manejo do solo adotado anteriormente continua sendo a opção mais viável economicamente para a região de Cerrado.
The use of cerrado regions for agricultural production was established initially with intensive use of the soil, providing changes in the physical, chemical and biological attributes according to the type of management adopted. The experiment was carried out at the Fazenda de Ensino, Pesquisa e Ensino (FEPE-Cerrado), belonging to the Faculty of Engineering of Ilha Solteira, in the of Selvíria-MS, in an Oxisol (EMBRAPA, 2013), year period from 2016 to 2017, had the objective of comparing the soil tillage systems to be adopted in crop seasons for stabilization of no-tillage (SPD) in soybean (summer) and sorghum (autumn-winter). The experimental design was a randomized block design, using factorial arrangement with four replications and seven treatments: continuous no-tillage (23 and 24 years of implantation), with minimum tillage, conventional soil tillage with heavy grating, and shisel moldboard pow by three disk plowing followed and no-tillage on each of these soils managed continuously with the same number of harvests followed up to the 7th and 8th harvests. Biometric data from soybean and sorghum cultures, soil physical attributes and amount of total organic carbon were evaluated for comparison of means. The results showed that continuous direct seeding systems presented higher amounts of total organic carbon stock. The increase of soybean grain yield is directly related to the greater presence of plants in the final stand when the soil was prepared with heavy grating followed by the time of implantation as no-tillage system, unlike the soil preparation operations with heavy grating and shisel moldboard pow continued to have lower plant survival, directly reflected in the fall in yields of soybeans because the greater field of view facilitated the attack of birds. The same soil management treatments adopted in the sorghum crop showed zero effect on biometric characteristics, showing that regardless of the time of SPD implementation and previously adopted soil management, it remains the most economically viable option in the Cerrado.
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Thothong, Warinya. "Source, storage and mineralization of organic matter in a tropical water reservoir (Thailand) : relationship with soil erosion on the watershed." Paris 6, 2009. http://www.theses.fr/2009PA066231.

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L’étude des flux de C dans une retenue d’eau du nord de la Thaïlande (Mae Thang, 220 ha, 35 x 106 m3) révèle que des facteurs climatiques (intensité des pluies) et anthropiques (mise en culture du bassin versant) caractérisés par des effets seuils, contrôlent les apports et le stockage de C dans les sédiments. Pendant les périodes de faibles debits d’entrée, les caractéristiques de la colonne d’eau sont contrôlées par les processus de production - minéralisation. La source principale de C est représentée par la biomasse aquatique. Pendant les périodes de forts débits, les apports de C sont essentiellement terrestres (plus de ca. 90 %). Bien que des concentrations élevées en CH4 dissous (jusqu’à 1650 µmol. L-1) ont pu être mesurées dans l’hypolimnion pendant la saison des pluies, les processus d’oxydation, renforcés au niveau de la thermocline et en relation avec la circulation d’eau profonde, réduisent considérablement l’exportation de CH4 dans l’épilimnion et son émission vers l’atmosphère. L’ensemble de ces données montre que le barrage peut être considéré comme un “puits” de C pour l’atmosphère avec une forte capacité de stockage (23,8 tC. Ha-1. Yr-1) et de faibles emissions de CH4.
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Rigby, Deborah Monique. "Microbial Responses to Coarse Woody Debris in Juniperus and Pinus Woodlands." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3515.

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The ecological significance of coarse woody debris (CWD) is usually highlighted in forests where CWD constitutes much of an ecosystem's carbon (C) source and stores. However, a unique addition of CWD is occurring in semi-deserts for which there is no ecological analog. To stem catastrophic wildfires and create firebreaks, whole Juniperus osteosperma (Torr.) and Pinus edulis (Engelm.) trees are being mechanically shredded into CWD fragments and deposited on soils previously exposed to decades of tree-induced changes that encourage "tree islands of fertility." To investigate consequences of CWD on C and nitrogen (N) cycling, we evaluated microbial metabolic activity and N transformation rates in Juniperus and Pinus surface and subsurface soils that were either shredded or left untreated. We sampled three categories of tree cover on over 40 tree cover encroachment sites. Tree cover categories (LOW = 0-15%, MID ≥ 15-45%, HIGH ≥ 45%) were used to indicate tree island development at time of treatment. In conjunction with our microbial measurements, we evaluated the frequency of three exotic grasses, and thirty-five native perennial grasses to identify links between belowground and aboveground processes. The addition of CWD increased microbial biomass by almost two-fold and increased microbial efficiency, measured as the microbial quotient, at LOW Juniperus cover. C mineralization was enhanced by CWD only in Pinus soils at the edge of tree canopies. The addition of CWD had little impact on microbial activity in subsurface soils. CWD enhanced the availability of dissolved organic C (DOC) and phosphorus (P) but tended to decrease the overall quality of labile DOC, measured as the ratio of soil microbial biomass to DOC. This suggested that the increase in DOC alone or other environmental factors novel to CWD additions lead to the increase in biomass and efficiency. P concentrations were consistently higher following CWD additions for all encroachment levels. The CWD additions decreased N mineralization and nitrification in Juniperus and Pinus soils at LOW and MID tree cover but only in surface soils, suggesting that less inorganic N was available to establishing or residual plants. The frequency of native perennial grasses, especially Elymus elymoides (Raf.), was at least 65% higher under CWD additions for all categories of tree cover, while the frequencies of exotic annual and perennial grasses were not impacted by CWD. The frequency of all perennial grasses ranged from 10-27%. Our results suggest that CWD enhanced microbial activity even when the quality of C substrates declined requiring microbes to immobilize more N. The reduction in inorganic N may promote the establishment and growth of native perennial grasses. Ultimately, the addition of CWD improved soil conditions for microbes in tree islands of fertility.
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Leão, Ricardo Elso. "Estabilização do carbono de resíduos culturais no solo com o uso de xisto retortado." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/5590.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico
The impact of retorted oil shale (ROS) addition on the dynamics of carbon (C) of crop residues (CR) in the soil is little known. Under laboratory conditions, the present study aimed to evaluate the residual and immediate effects of ROS on C mineralization of CR, water stability aggregates and storage C in the particulate (>53 μm) and associated minerals fractions (<53μm) of organic matter (OM) of a Hapludalf. In experiment 1, treatments consisted of soil samples from plots that received four additions of ROS, totaling 0, 6,000 and 12,000 kg ha-1. In experiment 2, treatments consisted of soil with no history of application of ROS (0 kg ha-1), that in the laboratory received three doses of ROS (0, 1,500 and 3,000 kg ha-1). In both experiments, the treatments were evaluated in the presence (3,000 kg ha-1) and absence of leaves and stalks of soybeans. The release of C-CO2 was evaluated for 80 days and at the end of the experiment determined the aggregate stability and C storage in different OM fractions. The addition of CR in soil with a history of ROS addition did not alter the release of C-CO2 and also did not reduce the apparent mineralization of C of RC compared to addition of these residues in soil with no history. In experiment 2, there was a reduction in the release of C-CO2 compared to the control only the treatment with stalks + 3000 kg ROS ha-1. In experiment 2, the treatment stalks + 3000 kg ROS ha-1 provided an increase in aggregate stability compared with treatment with only stalks. In experiment 1, the ROS addition tended to higher retention of C stalks and leaves in the soil. In experiment 2, the application of CR + ROS promoted greater retention of soil C only in the treatment with leaves. Under laboratory conditions, the soil with a history of ROS addition did not affect mineralization and retention of crop residue C added to soil. Besides, the ROS showed an immediate effect, reducing C mineralization from stalks and increasing retention of C from leaves added to the soil.
O impacto da adição de xisto retortado (XR) sobre a dinâmica do carbono (C) de resíduos culturais (RC) no solo é pouco conhecido. Em condições de laboratório, o presente estudo objetivou avaliar o efeito residual e imediato do XR sobre a mineralização do C de RC, estabilidade de agregados em água e armazenamento de C nas frações particulada (>53 μm) e associada aos minerais (<53 μm) da matéria orgânica (MO) de um Argissolo Vermelho Distrófico arênico. No experimento 1, os tratamentos foram compostos por amostras de solo de parcelas que receberam quatro aplicações de XR, totalizando 0, 6.000 e 12.000 kg ha-1. Já no experimento 2, os tratamentos foram constituídos com solo somente da parcela sem histórico de aplicação de XR (0 kg ha-1), que no laboratório recebeu três doses de XR equivalentes a 0, 1.500 e 3.000 kg ha-1. Em ambos os experimentos os tratamentos foram avaliados na presença (3.000 kg ha-1) e ausência de folhas e talos de soja. A liberação de C-CO2 foi avaliada durante 80 dias e ao final do experimento determinados a estabilidade de agregados e o armazenamento de C nas diferentes frações da MO. A adição de RC no solo com histórico de adição de XR não alterou a liberação de C-CO2 e também não reduziu a mineralização aparente do C dos RC comparado a adição desses resíduos em solo sem histórico. No experimento 2, houve redução na liberação de C-CO2 em relação ao controle somente no tratamento com talos + 3.000 kg de XR ha-1. No experimento 2, o tratamento talos + 3.000 kg de XR ha-1 proporcionou incremento na estabilidade de agregados em comparação com o tratamento somente com talos. No experimento 1, a adição de XR apresentou tendência de maior retenção de C dos talos e folhas no solo. No experimento 2, a aplicação conjunta de resíduos e XR promoveu maior retenção de C no solo apenas no tratamento com folhas. Em condições de laboratório, o solo com histórico de aplicação de XR não afetou a mineralização e a retenção do C de resíduos culturais adicionados ao solo. Além disso, o XR apresentou efeito imediato, reduzindo a mineralização do C de talos e aumentando a retenção do C de folhas adicionadas ao solo.
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Perveen, Nazia. "Intégration de l'écologie microbienne dans les modèles biogéochimiques : conséquences pour les prévisions du stockage du Carbone et la fertilité des sols." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066340.

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La prise en compte du priming effect * (PE) dans les modèles biogéochimiques est essentielle afin de mieux prévoir les conséquences du changement global sur le cycle du C (C) dans les écosystèmes et les interactions avec le climat. Au cours de la dernière décennie, de nombreux travaux ont été réalisés afin de modéliser le PE. Cependant, quelques connaissances de base nécessaires à cette modélisation du PE manquent tels que la relation entre le taux de décomposition des matières organique du sol (MOS) et la biomasse des décomposeurs (MB). En outre, le PE n'a jamais été inséré dans un modèle sol-plante afin de déterminer son rôle dans les interactions plante-sol. Dans ce contexte, les principaux objectifs de la thèse sont 1) d’intégrer l'activité, de la biomasse et de la diversité des microorganismes du sol dans les modèles de dynamique du C et de l’azote (N) des écosystèmes afin de simuler le PE, et 2) de déterminer les conséquences de cette intégration pour le fonctionnement des écosystèmes et la réponse au changement global. Ces objectifs ont été atteints grâce à la combinaison de la diverses approches telle que la modélisation, l’expérimentation et les analyses statistiques. Dans une expérience de laboratoire, je montre que le taux de décomposition des MOS augmente 1) linéairement avec la MB et 2) avec un effet de saturation avec la teneur en MOS. La réponse linéaire de décomposition des MOS à la MB s'explique par la colonisation très limitée du sol et des réserves des MOS par les microorganismes. Cependant, la limitation de la décomposition par la teneur en MOS montre que la disponibilité locale des MOS peut être un facteur limitatif pour la minéralisation microbienne. La co-limitation observée de la décomposition des MOS est correctement modélisée avec l'équation de Michaelis-Menten. L'intégration de cette équation dans un modèle simple de dynamique des MOS permet d’expliquer comment les MOS s'accumulent souvent continuellement dans les sols non perturbés alors qu'elles stagnent dans les sols cultivés. Cette présente également le premier modèle d’écosystème paramétré incorporant le PE (SYMPHONY). Ce modèle génère des prévisions réalistes sur la production de fourrage, stockage de C dans le sol et lessivage de l'azote pour des prairies permanentes. SYMPHONY montre également que la persistance des plantes dans les écosystèmes dépend d'un réglage fin de la minéralisation microbienne de MOS au besoin en nutriments des plantes. Ce réglage est modélisé par SYMPHONY en considérant la destruction de MOS par le PE et les interactions entre deux groupes fonctionnels microbiens: les décomposeurs des MOS et les stockeurs de MOS. Enfin, conformément aux récentes observations, SYMPHONY explique comment l’augmentation du CO2 atmosphérique induit une modification des communautés microbiennes du sol conduisant à une intensification de la minéralisation microbienne et à une diminution du stock des MOS dans le sol
Integration of the priming effect* (PE) in ecosystem models is crucial to better predict the consequences of global change on ecosystem carbon (C) dynamics and its feedbacks on climate. Over the last decade, many attempts have been made to model PE in soil. However, some basic knowledge to model the PE is lacking such as the relationship between decomposition rate of soil organic matter (SOM) and microbial biomass (MB). Moreover, the PE has never been inserted in a plant-soil model to analyze its role on plant-soil interactions. The main objectives of this thesis were to 1) integrate the activity, biomass and diversity of soil microorganisms in models of ecosystem C and nitrogen (N) dynamics in order to simulate the PE, and 2) determine the consequence of this integration for ecosystem functioning and response to global change. These objectives were achieved thanks to the combination of diverse approaches such as modeling, experimentation and statistical. In a lab experiment, I show that the rate of SOM decomposition increases 1) linearly with MB, and 2) with a saturating effect with SOM content. The linear response of SOM decomposition to MB is explained by the very limited microbial colonization of SOM reserves. However, the positive effect of SOM content on decomposition rate indicates that the local availability of SOM may be limiting for microbial mineralization. The observed co-limitation of SOM decomposition was accurately modeled with the Michaelis-Menten equation. Finally, incorporating this equation in a simple model of soil C dynamics explained how carbon often continuously accumulates in undisturbed soils whereas it reaches steady state in cultivated soils. Moreover, I present the first parameterized PE embedding plant-soil model (SYMPHONY) which provides realistic predictions on forage production, soil C storage and N leaching for a permanent grassland. SYMPHONY also shows that plant persistence depends on a fine adjustment of microbial mineralization of SOM to plant nutrient uptake. This fine adjustment was modeled by considering the destruction of SOM through PE and the interactions between two microbial functional groups: SOM-decomposers and SOM-builders. Moreover, consistent with recent observations, SYMPHONY explains how elevated CO2 induce modification of soil microbial communities leading to an intensification of SOM mineralization and a decrease in the soil C stock
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Yemadje, Pierrot Lionel. "Influence des cycles humectation-dessiccation sur la minéralisation du carbone : cas de la zone cotonnière du Nord Cameroun." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS209/document.

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Le sol est un compartiment majeur de stockage du carbone (C) organique de l’écosystème terrestre. Il joue un rôle important dans la régulation du climat. Toute variation des flux de carbone entre l’atmosphère et l’écosystème terrestre pourrait avoir un impact important sur l’augmentation de CO2 dans l’atmosphère, mais aussi sur la diminution des teneurs en matière organique du sol et donc sur la fertilité des sols. Au Nord Cameroun, les sols sont exposés à de longues périodes sèches (5 à 6 mois par an) qui alternent avec une saison humide. La période de transition entre ces deux saisons, peut durer de mi-avril à fin juin et est caractérisée par des pluies très irrégulières. Ces cycles d’humectation-dessiccation pourraient selon la littérature accentuer la minéralisation du carbone organique du sol et le cycle des éléments nutritifs. L’objectif de cette étude est de quantifier l’impact des cycles humectation-dessiccation sur la minéralisation du carbone dans un contexte soudano-sahélien. Pour faire des mesures représentatives sur le terrain, il est nécessaire d’étudier la variation sur 24 heures de la respiration du sol après humectation suite à une période sèche. Cette mise au point méthodologique a montré que la respiration du sol présente une courbe quadratique au cours de la journée, devenant presque linéaire au cours de la nuit. La température et l’humidité du sol ont permis d’expliquer au moins 73% des variations sur 24 heures. Ces observations ont été utilisées pour proposer une méthode pour estimer la respiration moyenne diurne et nocturne après humectation des sols. La méthode proposée dans cette étude a l’avantage d’être basée sur un nombre réduit de mesures et est par conséquent plus facile à mettre en œuvre pour suivre la respiration du sol sur 24 heures après les premières pluies. Une première étude expérimentale de terrain a permis de montrer que la ré-humectation des sols et le mode de gestion des pailles ont augmenté la minéralisation du carbone de ces sols. En revanche, la fréquence des cycles humectation-dessiccation des sols sur une période de 50 jours n’a pas augmenté la minéralisation cumulée du carbone des sols. Au Nord Cameroun, la minéralisation rapide des pailles rend difficile l’augmentation des stocks de carbone du sol par conservation des pailles des cultures précédentes à la surface du sol. Dans une seconde expérimentation de laboratoire, en conditions contrôlées, les cycles humectation-dessiccation n’ont pas augmenté la minéralisation du carbone organique du sol et de l’azote (N) par rapport aux sols maintenus humides. Cependant, les émissions de CO2 ont augmenté avec l’addition de paille enrichie en carbone-13. Cette addition de la paille marquée a augmenté la minéralisation de la matière organique du sol (priming effect). La minéralisation de la paille a diminué avec les cycles humectation-dessiccation et la quantité de paille restante était de 102 µg Cg-1 sol sur les sols ré-humectés contre 48 µg Cg-1 sol sur les sols maintenus humides. L’absence de cette réponse de la minéralisation du carbone et d’azote du sol aux cycles humectation-dessiccation pourrait être liée à une baisse de l’activité microbienne durant les périodes de dessèchement et l’absence d’une augmentation soutenue des taux de minéralisation du carbone avec les cycles ultérieurs d’humectation-dessiccation
Soil as a major storage component for terrestrial ecosystem’s organic carbon plays an important role in regulating climate and agricultural production. Any variation of carbon fluxes between the atmosphere and the terrestrial ecosystem can have a significant impact on the increase of carbon dioxide in the atmosphere but also the decrease in soil organic matter and thus accelarate soil fertility degradation. In northern Cameroon, the transition period between long dry periods with a wet season is characterized by very irregular rainfall that can last several weeks. These wetting-drying cycles can accentuate the mineralization of soil organic carbon and nutrient cycling. The objective of this study is to assess the impact of wet-dry cycles on carbon mineralization in a sudano-sahelian context. From methodological stand field measurements require to study the soil respiration variation over 24 hours after a wet period. This methodological test has shown that soil respiration has a quadratic curve during the day, becoming almost linear during the night. The temperature and soil moisture have explained together the variation over 24 hours (at least 73% ; p< 0.001). These observations have been used to propose a method for estimating the mean daytime and nighttime soil respiration after wetting the soil. Indeed the method proposed in this study has the advantage of being based on a small number of measurements and is, therefore, easier to implement to monitor 24-h soil respiration after the first rains following a long dry period. A first experiment has shown that the wetting of the soil and mulching increased soil carbon mineralization. However, wetting-drying cycles on soil did not increase the cumulative mineralization of soil carbon more than keeping the soil continuously moist. Indeed, in northern Cameroon, the rapid mineralization of crop residues makes it difficult to increase soil carbon stocks by mulching. In a second laboratory experiment, the wetting-drying cycles did not increase organic carbon and nitrogen mineralization from soils added with straw. However, carbon dioxide emissions increased on straw amended soils compared to soils without straw. This addition of the labeled straw increased mineralization of soil organic matter (priming effect). The mineralization of the straw also decreased with the wetting-drying cycles, thus the amount of straw remaining on soils was 102 µg C g-1 soil on re-wetted soils compared to 48 µg C g-1 soil for those with constant moisture. The lack of response for C and N mineralization during wetting-drying cycles may be linked to a decrease of microbial activity during dry periods and the lack of a steady increase in the carbon mineralization rate with subsequent wetting-drying cycles
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Books on the topic "Soil organic carbon mineralization"

1

Smith, W. Soil degradation risk indicator: Organic carbon component. Ottawa: Agriculture and Agri-Food Canada, 1997.

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Leventhal, Joel S. Soil organic carbon content in rice soils of Arkansas and Louisiana and a comparison to non-agricultural soils, including a bibliography for agricultural soil carbon. [Denver, CO]: U.S. Geological Survey, 1997.

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Leventhal, Joel S. Soil organic carbon content in rice soils of Arkansas and Louisiana and a comparison to non-agricultural soils, including a bibliography for agricultural soil carbon. [Denver, CO]: U.S. Geological Survey, 1997.

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service), SpringerLink (Online, ed. Carbon Sequestration in Agricultural Soils: A Multidisciplinary Approach to Innovative Methods. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.

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Nong tian tu rang you ji tan bian hua yan jiu: Nongtian turang youjitan bianhua yanjiu. Wuhu Shi: Anhui shi fan da xue chu ban she, 2011.

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Ryan, Miriam G. The influence of draught and rewetting on the dynamics of nitrogen, potassium and disolved organic carbon in a coniferous forest ecosystem. Dublin: University College Dublin, 1997.

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McInerney, M. The effect of earthworm activity, silt/clay content and climatic interactions on soil organic matter dynamics in forestry systems. Dublin: University College Dublin, 1998.

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Wilsey, Brian J. Nutrient Cycling and Energy Flow in Grasslands. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198744511.003.0004.

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Net primary productivity (NPP) is the amount of C or biomass that accumulates over time and is photosynthesis—autotroph respiration. Annual NPP is estimated by summing positive biomass increments across time periods during the growing season, including offtake to herbivores, which can be high in grasslands. Remote sensing techniques that are used to assess NPP are discussed by the author. Belowground productivity can be high in grasslands, and it is important to carbon storage. Across grasslands on a geographic scale, NPP, N mineralization, and soil organic C all increase with annual precipitation. Within regions, NPP can be strongly affected by the proportion of C4 plant species and animal species composition and diversity. Humans are adding more N to the environment than all the natural forms of addition (fixation and lightning) combined. Animals, especially herbivores, can have strong effects on how plants respond to changes in changes in resource availability.
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Soil Organic Carbon: The Hidden Potential. Food & Agriculture Organization of the United Nations, 2017.

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J, Zinke Paul, Millemann Raymond E, Boden Thomas A, Carbon Dioxide Information Analysis Center (U.S.), Oak Ridge National Laboratory. Environmental Sciences Division, United States. Dept. of Energy. Office of Basic Energy Sciences. Carbon Dioxide Research Division, and United States. Dept. of Energy. Office of Energy Research, eds. Worldwide organic soil carbon and nitrogen data. Oak Ridge, Tenn: Oak Ridge National Laboratory, 1986.

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Book chapters on the topic "Soil organic carbon mineralization"

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Yu, Xiaofei. "Effect of Freeze–Thaw on the Mineralization of Organic Carbon, and Organic Nitrogen in Wetland Soil." In Material Cycling of Wetland Soils Driven by Freeze-Thaw Effects, 79–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34465-7_7.

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de Brogniez, Delphine, Cristiano Ballabio, Bas van Wesemael, Robert J. A. Jones, Antoine Stevens, and Luca Montanarella. "Topsoil Organic Carbon Map of Europe." In Soil Carbon, 393–405. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_39.

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McBratney, Alex B., Uta Stockmann, Denis A. Angers, Budiman Minasny, and Damien J. Field. "Challenges for Soil Organic Carbon Research." In Soil Carbon, 3–16. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_1.

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Poch, Rosa M., and Iñigo Virto. "Micromorphology Techniques for Soil Organic Carbon Studies." In Soil Carbon, 17–26. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_2.

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Jakab, Gergely, Klaudia Kiss, Zoltán Szalai, Nóra Zboray, Tibor Németh, and Balázs Madarász. "Soil Organic Carbon Redistribution by Erosion on Arable Fields." In Soil Carbon, 289–96. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_30.

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Bockheim, James G., and Nick W. Haus. "Distribution of Organic Carbon in the Soils of Antarctica." In Soil Carbon, 373–80. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_37.

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Funakawa, Shinya, Kazumichi Fujii, Atsunobu Kadono, Tetsuhiro Watanabe, and Takashi Kosaki. "Could Soil Acidity Enhance Sequestration of Organic Carbon in Soils?" In Soil Carbon, 209–16. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_22.

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Bliss, Norman B., Sharon W. Waltman, Larry T. West, Anne Neale, and Megan Mehaffey. "Distribution of Soil Organic Carbon in the Conterminous United States." In Soil Carbon, 85–93. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_9.

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Michéli, Erika, Phillip R. Owens, Vince Láng, Márta Fuchs, and Jon Hempel. "Organic Carbon as a Major Differentiation Criterion in Soil Classification Systems." In Soil Carbon, 37–43. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_4.

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Atanassova, Irena D., Stefan H. Doerr, and Gary L. Mills. "Hot-Water-Soluble Organic Compounds Related to Hydrophobicity in Sandy Soils." In Soil Carbon, 137–46. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04084-4_14.

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Conference papers on the topic "Soil organic carbon mineralization"

1

Mancer, Halima, and Mustapha Daddi Bouhoun. "Effect of irrigation water salinity on the organic carbon mineralization in soil (laboratory incubation)." In TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES18. Author(s), 2018. http://dx.doi.org/10.1063/1.5039166.

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Maria L Cayuela, Tania Sinicco, and Claudio Mondini. "Dynamics of Carbon Mineralization and Biochemical Properties Following Application of Organic Residues to Soil." In International Symposium on Air Quality and Waste Management for Agriculture, 16-19 September 2007, Broomfield, Colorado. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2007. http://dx.doi.org/10.13031/2013.23810.

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Зубарев, В. А. "CHANGE OF AGROCHEMICAL INDICATORS OF MEADOW-GLEY SOILS UNDER THE INFLUENCE OF DRYING RECLAMATION (ON THE EXAMPLE OF THE JEWISH AUTONOMOUS REGION)." In Геосистемы Северо-Восточной Азии. Crossref, 2021. http://dx.doi.org/10.35735/tig.2021.74.42.017.

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Целью исследования являлось анализ изменения агрохимических свойств сельскохозяйственных лугово-глеевых почв под влиянием осушительной мелиорации. Для изучения влияния осушительной мелиорации на состояние почв на территории Среднеамурской низменности полевые исследования проводились в 2008 и через десять лент в 2018 гг. Проведение осушительной мелиорации на тяжелых лугово-глеевых почвах Среднеамурской низменности (на примере Еврейской автономной области) сопровождается изменением рН в нейтральную сторону и небольшим увеличением валового содержания металлов, поглощенных оснований и степени насыщенности основаниями. Снижение содержания гумуса связано с усилением аэрации при ежегодной распашке земель, сменой водного режима на застойно-промывной, что способствует быстрой сработке гумуса. Длительное осушение почв приводит не к усилению минерализации органического вещества, а к качественному изменению его состава, что выражается в повышении в пахотном слое отношения содержания углерода гуминовых кислот к содержанию углерода фульвокислот. The aim of the study was to clarify and clarify the nature and degree of change in the basic properties of agricultural meadow-gley soils under the influence of drainage reclamation. To study the effect of drainage reclamation on the state of soils in the territory of the Central Amur Lowland, field studies were conducted in 2008 and through ten tapes in 2018. Conducting drainage reclamation on heavy meadow-gley soils of the Middle Amur Lowland (for example, the Jewish Autonomous Region) is accompanied by a change in pH to the neutral side and a slight increase in the gross content of metals, absorbed bases and degree of saturation with bases. The decrease in humus content is associated with increased aeration during the annual plowing of land, a change in the water regime to stagnant-flushing, which contributes to the rapid depletion of humus. Prolonged drainage of soils does not lead to increased mineralization of organic matter, but to a qualitative change in its composition, which is reflected in an increase in the ratio of the carbon content of humic acids to the carbon content of fulvic acids in the arable layer.
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Rizaldo E Aldas, Bryan M Jenkins, and Jean S VanderGheynst. "Degradation Potential and Soil Carbon Mineralization of Biomass Gasification Tars." In 2007 Minneapolis, Minnesota, June 17-20, 2007. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2007. http://dx.doi.org/10.13031/2013.23021.

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Meador, T., J. Niedzwiecka, S. Jabinski, T. Picek, R. Angel, and H. Šantrůčková. "Modes of Soil Organic Carbon Sequestration and Carbon Use Efficiency Determined by Soil Aeration Status." In 30th International Meeting on Organic Geochemistry (IMOG 2021). European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202134129.

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Qidujiya, Haitang. "Soil microbial biomass carbon, nitrogen and nitrogen mineralization of grazing intensity response." In 2011 Second International Conference on Mechanic Automation and Control Engineering. IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5988831.

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Matarrese, Raffaella, Valeria Ancona, Rosamaria Salvatori, Maria Rita Muolo, Vito Felice Uricchio, and Michele Vurro. "Detecting soil organic carbon by CASI hyperspectral images." In IGARSS 2014 - 2014 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2014. http://dx.doi.org/10.1109/igarss.2014.6947181.

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Raines, Eron, Kevin Norton, Anthony Dosseto, Quan Hua, Claire Lukens, Julie Deslippe, and Maia Bellingham. "Chemical Weathering and Organic Carbon Turnover in Soil." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2159.

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Danielle N. McEachin and Jean S. VanderGheynst. "Development of Models for Predicting Carbon Mineralization and Phytotoxicity in Compost-Amended Soil." In 2006 Portland, Oregon, July 9-12, 2006. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2006. http://dx.doi.org/10.13031/2013.21027.

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Hu, Yunfeng, Jiyuan Liu, Dafang Zhuang, Shaoqiang Wang, Fengting Yang, and Siqing Chen. "Soil erosion effects on soil organic carbon and an assessment within China." In Optical Science and Technology, the SPIE 49th Annual Meeting, edited by Wei Gao and David R. Shaw. SPIE, 2004. http://dx.doi.org/10.1117/12.558631.

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Reports on the topic "Soil organic carbon mineralization"

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Zinke, P. J., A. G. Stangenberger, W. M. Post, W. R. Emanual, and J. S. Olson. Worldwide organic soil carbon and nitrogen data. Office of Scientific and Technical Information (OSTI), September 1986. http://dx.doi.org/10.2172/543663.

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Gebhart, Dick L., H. A. Torbert, and Michael Hargrave. Identifying Military Impacts on Archaeological Deposits Based on Differences in Soil Organic Carbon and Chemical Elements at Soil Horizon Interfaces. Fort Belvoir, VA: Defense Technical Information Center, March 2012. http://dx.doi.org/10.21236/ada559158.

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Firestone, Mary. Mapping soil carbon from cradle to grave: drafting a molecular blueprint for C transformation from roots to stabilized soil organic C. Office of Scientific and Technical Information (OSTI), February 2018. http://dx.doi.org/10.2172/1437612.

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Bradford, M. A., J. M. Melillo, J. F. Reynolds, K. K. Treseder, and M. D. Wallenstein. Heterotrophic Soil Respiration in Warming Experiments: Using Microbial Indicators to Partition Contributions from Labile and Recalcitrant Soil Organic Carbon. Final Report. Office of Scientific and Technical Information (OSTI), June 2010. http://dx.doi.org/10.2172/981713.

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Kostka, Joel. The response of soil carbon storage and microbially mediated carbon turnover to simulated climatic disturbance in a northern peatland forest. Revisiting the concept of soil organic matter recalcitrance. Office of Scientific and Technical Information (OSTI), September 2015. http://dx.doi.org/10.2172/1330571.

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Wallenstein, Matthew. Understanding Litter Input Controls on Soil Organic Matter Turnover and Formation are Essential for Improving Carbon-Climate Feedback Predictions for Arctic, Tundra Ecosystems. Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1411190.

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You might also be interested in the extended bibliographies on the topic 'Soil organic carbon mineralization' for particular source types:
Journal articles Dissertations / Theses Books
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