Zaloguj się

Gotowe bibliografie tematyczne / Soil-water dynamics / Rozprawy doktorskie

Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Soil-water dynamics.

Rozprawy doktorskie na temat „Soil-water dynamics”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 20 lutego 2023

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych rozpraw doktorskich naukowych na temat „Soil-water dynamics”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.

1

Ashraf, Muhammad. "Dynamics of soil water under non-isothermal conditions." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336299.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

2

Bastviken, Paulina. "Soil water solution DOC dynamics during winter in boreal hillslopes." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-229128.

Pełny tekst źródła

Streszczenie:

When plants and animals die they are decomposed into microscopic particles of organic carbon. In the ground, these carbon particles are dissolved in the soil water and eventually transported to the streamchannel with the flow of the groundwater. Today the quantities of dissolved organic carbon (DOC) have been observed to increase in many lakes and streams around the world, which constitute a threat against the water quality and ecologic environment of these surface waters. The amount of organic carbon that is dissolved and transported in the soil water is mainly controlled by processes related

Style APA, Harvard, Vancouver, ISO itp.

3

Baigys, Giedrius. "Soil water regime and nitrate leaching dynamics applying no-tillage." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20090217_111111-32108.

Pełny tekst źródła

Streszczenie:

The impact of different agricultural systems used in agriculture on the leaching of nutrients and nitrates first of all depends on many factors that are not noticed and sometimes even underestimated by farmers trying to reach larger yields and better economic results. This article analysis the issue of changes in water regime and nitrate nitrogen leaching under the change of agricultural systems; such issue has not been investigated in Lithuania before. This research is especially relevant under the conditions of the Middle Lithuanian Lowland, where annual crops (cereals and sugar beet) area m

Style APA, Harvard, Vancouver, ISO itp.

4

Karavokyris, Ioannis. "Modelling the dynamics of water in field soil-plant systems." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46385.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

5

Chen, Liping. "Soil Characteristics Estimation and Its Application in Water Balance Dynamics." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9789/.

Pełny tekst źródła

Streszczenie:

This thesis is a contribution to the work of the Texas Environmental Observatory (TEO), which provides environmental information from the Greenbelt Corridor (GBC) of the Elm Fork of the Trinity River. The motivation of this research is to analyze the short-term water dynamic of soil in response to the substantial rainfall events that occurred in North Texas in 2007. Data collected during that year by a TEO soil and weather station located at the GBC includes precipitation, and soil moisture levels at various depths. In addition to these field measurements there is soil texture data obtained fr

Style APA, Harvard, Vancouver, ISO itp.

6

Chen, Liping Acevedo Miguel Felipe. "Soil characteristics estimation and its application in water balance dynamics." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-9789.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

7

Shahadha, Saadi Sattar. "Measured Soil Hydraulic Properties as RZWQM2 Input to Simulate Soil Water Dynamics and Crop Evapotranspiration." UKnowledge, 2018. https://uknowledge.uky.edu/pss_etds/110.

Pełny tekst źródła

Streszczenie:

Agricultural system models integrate many different processes that cannot all be measured in field experiments and help quantify soil water dynamics, crop evapotranspiration, and crop growth with high temporal resolution. Understanding soil water dynamics and crop evapotranspiration is essential to improve agricultural management of field crops. For example, the interaction between nitrogen application rate and water dynamics is not sufficiently understood. In most cases, model simulations deviate from field measurements, especially when model input parameters are indirectly and unspecifically

Style APA, Harvard, Vancouver, ISO itp.

8

Sherriff, Sophie C. "Soil erosion and suspended sediment dynamics in intensive agricultural catchments." Thesis, University of Dundee, 2015. https://discovery.dundee.ac.uk/en/studentTheses/e4d08cd3-dc85-4e0e-96e2-f76430ee27e3.

Pełny tekst źródła

Streszczenie:

Excessive delivery of fine sediment from agricultural river catchments to aquatic ecosystems can degrade chemical water quality and ecological habitats. Management of accelerated soil losses and the transmission of sediment-associated agricultural pollutants, such as phosphorus, is required to mitigate the drive towards sustainable intensification to increase global food security. Quantifying soil erosion and the pathways and fate of fine-grained sediment is presently under-researched worldwide, and particularly in Ireland. This thesis established a sediment monitoring network upon an existing

Style APA, Harvard, Vancouver, ISO itp.

9

Makris, Konstantinos Christos. "Soil and colloidal phosphorous dynamics in three KY soils bioavailability, transport and water quality implications /." Lexington, Ky. : [University of Kentucky Libraries], 2002. http://lib.uky.edu/ETD/ukypssc2003t00069/KCMakris%5FMS%5FThesis.pdf.

Pełny tekst źródła

Streszczenie:

Thesis (M.S.)--University of Kentucky, 2002.<br>Title from document title page. Document formatted into pages; contains xiii, 163 p. :ill. Includes abstract. Includes bibliographical references (p. 152-162).

Style APA, Harvard, Vancouver, ISO itp.

10

Makris, Konstantinos Christos. "SOIL AND COLLOIDAL PHOSPHORUS DYNAMICS IN THREE KY SOILS: BIOAVAILABILITY, TRANSPORT AND WATER QUALITY IMPLICATIONS." UKnowledge, 2003. http://uknowledge.uky.edu/gradschool_theses/408.

Pełny tekst źródła

Streszczenie:

Particulate P constitutes a significant portion of the total P found in surface runoff water. Water dispersed P-containing particles can travel long distances via surface runoff and reach water bodies causing decrease in water quality. The main objective of the study was to evaluate the potential facilitation of P transport by the water dispersed soil colloids (WDC) using three KY soils with a long-term record of poultry manure, and fertilizer P applications. Sequential fractionation for both whole soils and colloidal samples revealed that the WDC had a greater total and labile P content than

Style APA, Harvard, Vancouver, ISO itp.

11

Dlamini, Musa V. "Short-Term Water Use Dynamics in Drainage Lysimeters." DigitalCommons@USU, 2003. https://digitalcommons.usu.edu/etd/5877.

Pełny tekst źródła

Streszczenie:

Turfgrass water use (seasonal turfET) and crop coefficients were determined and a mathematical soil-water balance model for non-weighing drainage lysimeters, which simulates the occurrence (timing and amount) of drainage, was developed. Pairs of non-weighing drainage lysimeters were used to determine crop coefficients for turfgrass in four locations in the state of Utah: Logan Golf and Country Club, Murray Golf Course, Brigham Young University (Spanish Fork) Experiment Farm, and Sunbrook Golf Course (St. George). Daily weather data including air temperature, relative humidity, average wind tra

Style APA, Harvard, Vancouver, ISO itp.

12

Jaumann, Stefan [Verfasser], and Kurt [Akademischer Betreuer] Roth. "Estimation of Soil Water Dynamics Based on Hydrogeophysical Measurements / Stefan Jaumann ; Betreuer: Kurt Roth." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177385953/34.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

13

White, II David Allen. "Vegetation Controls on the Dynamics and Quality of Soil Organic Carbon in an Arid, Hyperthermic Ecosystem." Thesis, The University of Arizona, 2008. http://hdl.handle.net/10150/193315.

Pełny tekst źródła

Streszczenie:

Arid lands comprise vast regions of terrestrial land, highlighting the importance of understanding their role in the global carbon cycle. The objective of this study was to determine the effect of Prosopis velutina (mesquite), Larrea tridentata (creosote) and a combination of Bouteloua barbata, Bouteloua aristidoides, Aristida adscensionis, and some Cynodon dactylon (mixed grass) vegetation types on soil organic carbon (SOC) dynamics and quality in an arid, hyperthermic ecosystem of southern Arizona. This was accomplished by quantifying vegetation type control over: (i) local scale SOC stocks;

Style APA, Harvard, Vancouver, ISO itp.

14

Leuther, Frederic [Verfasser], Hans-Jörg Gutachter] Vogel, and Jörg [Gutachter] [Bachmann. "Impact of treated wastewater irrigation on soil structure and soil water dynamics / Frederic Leuther ; Gutachter: Hans-Jörg Vogel, Jörg Bachmann." Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2019. http://nbn-resolving.de/urn:nbn:de:gbv:3:4-1981185920-140560.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

15

Leuther, Frederic [Verfasser], Hans-Jörg [Gutachter] Vogel, and Jörg [Gutachter] Bachmann. "Impact of treated wastewater irrigation on soil structure and soil water dynamics / Frederic Leuther ; Gutachter: Hans-Jörg Vogel, Jörg Bachmann." Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2019. http://d-nb.info/1210727757/34.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

16

Zakharova, Anna. "Soil organic matter dynamics: influence of soil disturbance on labile pools." Thesis, University of Canterbury. School of Biological Sciences, 2014. http://hdl.handle.net/10092/9944.

Pełny tekst źródła

Streszczenie:

Soils are the largest pool of carbon (C) in terrestrial ecosystems and store 1500 Gt of C in their soil organic matter (SOM). SOM is a dynamic, complex and heterogeneous mixture, which influences soil quality through a wide range of soil properties. Labile SOM comprises a small fraction of total SOM (approximately 5%), but due to its rapid turnover has been suggested to be most vulnerable to loss following soil disturbance. This research was undertaken to examine the consequences of soil disturbance on labile SOM, its availability and protection in soils using the isotopic analysis of soil-res

Style APA, Harvard, Vancouver, ISO itp.

17

Balasubrahmanyam, Sunil K. "Environmental dynamics of Benomyl and Thiabendazole." Thesis, Virginia Tech, 1986. http://hdl.handle.net/10919/50496.

Pełny tekst źródła

Streszczenie:

The comprehensive environmental dynamics of the heterocyclic Benzimidazole fungicides, Benomyl and Thiabendazole was investigated. This included examining their fate and distribution in the terrestrial and aquatic phases of a laboratory microcosm comprised of silty clay loam soil and plants. The soil component constituted a major relocation site, with approximately 45 and 75% of initial Benomyl (recovered as MBC) and Thiabendazole concentrations being recovered from the soil component of the microcosm, respectively, while 53 and 27% translocated into corn plants. The adsorption mechanism/s of

Style APA, Harvard, Vancouver, ISO itp.

18

Uddin, S. M. Mijan. "Understanding soil water repellency under native vegetation in Australia: An empirical and molecular dynamics approach." Thesis, Uddin, S. M. Mijan (2017) Understanding soil water repellency under native vegetation in Australia: An empirical and molecular dynamics approach. PhD thesis, Murdoch University, 2017. https://researchrepository.murdoch.edu.au/id/eprint/40269/.

Pełny tekst źródła

Streszczenie:

Soil water repellency (SWR) is a major land management issue across southern Australia and inhibits the infiltration of water into soil with effects on the germination of crops and pastures and run-off in agricultural and forested land. SWR is a natural phenomenon and generally occurs in the surface layers of sandy soils where hydrophobic materials mostly of plant origin occur as particulate organic matter and as waxy coatings on soil particles. Although its incidence and severity have been anecdotally related to the previous native vegetation little is known about the specific organic compoun

Style APA, Harvard, Vancouver, ISO itp.

19

Shepherd, Greg William. "A comparative agroecosystems analysis of soil water and root dynamics under six different vegetative cover types." [Ames, Iowa : Iowa State University], 2006.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

20

Poltoradnev, Maksim [Verfasser], and Thilo [Akademischer Betreuer] Streck. "Measuring and modelling of soil water dynamics in two German landscapes / Maksim Poltoradnev ; Betreuer: Thilo Streck." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2018. http://d-nb.info/1160301867/34.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

21

Livesley, Stephen. "The distribution and dynamics of roots and soil nitrogen and water in tree row agroforestry systems." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285967.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

22

WEHR, RACHEL NICOLE. "LONG-TERM PRECIPITATION TRENDS OF TWO UNIQUELY WATER-LIMITED ECOSYSTEMS: IMPLICATIONS FOR FUTURE SOIL MOISTURE DYNAMICS." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/614199.

Pełny tekst źródła

Streszczenie:

Roughly 40% of the Earth’s land surface is classified as arid or semiarid. These areas are expected to see changes in the frequency and magnitude of precipitation, which could have major implications for soil water resources, vegetation, water supply, and biome evolution. This study analyzed long-term precipitation trends in two water-limited ecosystems with bimodal precipitation regimes: a desert shrubland at the Santa Rita Experimental Range (SRER-SRC) and a mixed conifer system at the Santa Catalina Mountain Critical Zone Observatory (SCM-CZO). Specifically, we analyzed frequency and timing

Style APA, Harvard, Vancouver, ISO itp.

23

van, Quang Pham. "Soil formation and soil moisture dynamics in agriculture fields in the Mekong Delta, Vietnam conceptual and numerical models." Licentiate thesis, KTH, Land and Water Resources Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10508.

Pełny tekst źródła

Streszczenie:

<p>Previous studies of agricultural conditions in the Mekong Delta (MD) have identified soil compaction as an obstacle to sustainable production. A conceptual model for soil formation was presented to demonstrate the link between soil hydrology and plant response. Detailed studies of soil moisture dynamics in agricultural fields were conducted using a dynamic process-orientated model. Pressure head and water flow were simulated for three selected sites during a year for which empirical data were available. Daily meteorological data were used as dynamic input and measured pressure head was used

Style APA, Harvard, Vancouver, ISO itp.

24

da, Silva Cerozi Brunno, and Silva Cerozi Brunno da. "Phosphorus Dynamics, Mass Balance and Mineralization in Aquaponics Systems." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/620832.

Pełny tekst źródła

Streszczenie:

This study involves tracing inputs, partitioning, and outputs of phosphorus (P) through an aquaponics system. A mathematical model was developed to describe the dynamics of phosphorus in an aquaponics nutrient solution, and to maximize P use efficiency and minimize P waste. We assessed the influence of pH on the availability and speciation of phosphorus in an aquaponics nutrient solution. By using Visual MINTEQ, a freeware chemical equilibrium model for the calculation of element speciation, solubility equilibria, and sorption for natural waters, it was discovered that high pH values favor the

Style APA, Harvard, Vancouver, ISO itp.

25

Leighton-Boyce, G. "Spatio-temporal dynamics and hydrogeomorphic implications of soil water repellency within Eucalyptus forests in north-central Portugal." Thesis, Swansea University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637874.

Pełny tekst źródła

Streszczenie:

This thesis investigates spatio-temporal variations in soil water repellency and their hydrogeomorphic effects within eucalyptus plantations in north-central Portugal. Rainfall simulation with and without wetting agents were used to quantify the effects of repellency on overland flow, slopewash, splash detachment and wetting patterns at the small-plot scale on long-unburnt and recently burnt terrain. Monitoring over 16-months (>9000 paired repellency and soil moisture measurements) was carried out at four different sites at meso-(2 m) and micro-scales (10 cm) to establish spatio-temporal repel

Style APA, Harvard, Vancouver, ISO itp.

26

Walecka-Hutchison, Claudia Walworth James L. "Nitrogen dynamics in diesel biodegradation effects of water potential, soil C:N ratios, and nitrogen cycling on biodegradation efficacy /." FIND on the Web, 2005.

Znajdź pełny tekst źródła

Streszczenie:

Thesis (Ph. D. - Soil, Water, and Environmental Science)--University of Arizona.<br>Appendix A - Hydrocarbon biodegradation rates and water potential in nitrogen augmented desert soils, by Claudia Walecka-Hutchison and James L. Walworth ; Appendix B - Assessment of C:N ratios and water potential for nitrogen optimization in diesel bioremediation, by Claudia Walecka-Hutchison and James L. Walworth ; Appendix C - Evaluating the effects of gross nitrogen mineralization, immobilization and nitrification on nitrogen fertilizer availability during diesel biodegradation, by Claudia Walecka-Hutchison

Style APA, Harvard, Vancouver, ISO itp.

27

Pinto, Victor Meriguetti. "Simulation of water and nitrogen dynamics in a Cerrado soil under coffee cultivation using SWAP and ANIMO models." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-02022016-105753/.

Pełny tekst źródła

Streszczenie:

Agriculture when only focused on production leads to an unsustainable use of inputs with negative consequences to the environment and human health. One consequence of the excessive use of fertilizers is the pollution of surface and underground water resources in agricultural eco-systems and their boundaries. The Brazilian Cerrado has been suffering the transformations of the intensive agriculture during the last decades. Due to the poor fertility of soils, in general very sandy and of low pH, the use of agricultural inputs is intensified and the nutrient downward transport by leaching becomes

Style APA, Harvard, Vancouver, ISO itp.

28

Walecka-Hutchison, Claudia. "Nitrogen dynamics in diesel biodegradation : effects of water potential, soil C:N ratios, and nitrogen cycling on biodegradation efficacy." Diss., The University of Arizona, 2005. http://hdl.handle.net/10150/191274.

Pełny tekst źródła

Streszczenie:

Respirometric experiments were performed to evaluate the role of nitrogen in aerobic diesel biodegradation. Specific objectives included 1) evaluating the effects of water potential induced by various nitrogen amendments on diesel biodegradation rates in arid region soils, 2) comparing concurrent effects of C:N ratios and soil water potential on diesel degradation rates, and 3), measuring gross rates of nitrogen cycling processes in diesel-contaminated soil to determine duration of fertilizer bioavailability. In all studies, increasing nitrogen fertilization resulted in a decrease in total wat

Style APA, Harvard, Vancouver, ISO itp.

29

Bonita, John Anthony. "The Effects of Vibration on the Penetration Resistance and Pore Water Pressure in Sands." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/29417.

Pełny tekst źródła

Streszczenie:

The current approach for using cone penetration test data to estimate soil behavior during seismic loading involves the comparison of the seismic stresses imparted into a soil mass during an earthquake to the penetration resistance measured during an in-situ test. The approach involves an indirect empirical correlation of soil density and other soil related parameters to the behavior of the soil during the loading and does not involve a direct measurement of the dynamic behavior of the soil in-situ. The objective of this research was to develop an approach for evaluating the in-situ behavior

Style APA, Harvard, Vancouver, ISO itp.

30

Ferreira, Nicole Costa Resende. "Effects of climate change on corn: numerical simulation of soil water dynamics in a corn crop in Illinois (USA)." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-16032018-123509/.

Pełny tekst źródła

Streszczenie:

Given the importance of climate conditions in the agricultural environment, more specifically in the transport of water in the soil, there is a need to understand the effects of climate change on the water dynamics in the soil. This influence of climate conditions in the agricultural environment seems to be important in evapotranspiration, water availability for plants and roots, and for other processes. Many theoretical models have been developed to characterize the physical processes involved in water and transport. Climate prediction models such as the suite of models in the Coupled Model I

Style APA, Harvard, Vancouver, ISO itp.

31

Hasnat, Abul, University of Western Sydney, of Science Technology and Environment College, and School of Environment and Agriculture. "Soil-water use and irrigation scheduling under fruit tree-turf alley cropping system in Hawkesbury Area." THESIS_CSTE_EAG_Hasnat_A.xml, 2003. http://handle.uws.edu.au:8081/1959.7/614.

Pełny tekst źródła

Streszczenie:

Efficient use of irrigation and nutrients are becoming increasingly important in commercial orchards in the Hawkesbury area. Proper irrigation scheduling practices can help in the better use of irrigation water and reduce environmental impacts. Field experiments were conducted during February 1999 to June 2000 to understand soil-water use, and to evaluate farmer’s irrigation practice under an alley cropping system consisting of turf and stone fruits. The study was carried out at Atlas Farm, 3.5 km from the University of Western Sydney, Hawkesbury campus. The experimental site is a floodplain o

Style APA, Harvard, Vancouver, ISO itp.

32

DAYANTHI, WANNIARACHCHI KANKANAMGE CHANDRANI NEETHA. "ANALYSIS OF NITROGEN DYNAMICS IN SOIL COLUMNS TO EVALUATE NITRATE POLLUTION DUE TO RECLAIMED WASTEWATER IRRIGATION." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/49139.

Pełny tekst źródła

Streszczenie:

学位授与大学：京都大学 ; 取得学位: 博士(工学) ; 学位授与年月日: 2007-09-25 ; 学位の種類: 新制・課程博士 ; 学位記番号: 工博第2851号 ; 請求記号: 新制/工/1419 ; 整理番号: 25536<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第13380号<br>工博第2851号<br>新制||工||1419(附属図書館)<br>25536<br>UT51-2007-Q781<br>京都大学大学院工学研究科都市環境工学専攻<br>(主査)教授田中宏明, 教授藤井滋穂, 教授清水芳久<br>学位規則第4条第1項該当

Style APA, Harvard, Vancouver, ISO itp.

33

Benard, Pascal [Verfasser], and Andrea [Akademischer Betreuer] Carminati. "Microhydrological niches in soils : how mucilage and EPS alter soil hydraulic properties and water dynamics / Pascal Benard ; Betreuer: Andrea Carminati." Bayreuth : Universität Bayreuth, 2020. http://d-nb.info/1209196573/34.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

34

Marryanna, Lion. "Effects of spatio-temporal distribution of soil moisture on a lowland dipterocarp forest at Pasoh Forest Reserve in Peninsular Malaysia." Kyoto University, 2018. http://hdl.handle.net/2433/232153.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

35

Villalobos-Vega, Randol. "Water Table and Nutrient Dynamics in Neotropical Savannas and Wetland Ecosystems." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/389.

Pełny tekst źródła

Streszczenie:

The Tropical savannas of central Brazil (cerrado) and the Everglades wetland (Florida) ecosystems are ideal systems to study landscape spatial mosaics and their interactions. Both ecosystems show a variety of plant physiognomies distributed within small spatial scales and elevation gradients. Such variety of plant physiognomies provide an opportunity to investigate the roles of climate, topography, nutrient availability and water table dynamics as determinants of plant physiognomic distributions, and their role in shaping regional systems. South Florida Wetlands and the tropical savannas of ce

Style APA, Harvard, Vancouver, ISO itp.

36

Neilson, Julia Worsley. "Bacterial Diversity of the Atacama Desert, Chile: The Challenges of Characterizing the Community Dynamics of Extreme Oligotrophic Ecosystems." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/242364.

Pełny tekst źródła

Streszczenie:

This dissertation examines the bacterial diversity of hyperarid and arid regions of the Atacama Desert, Chile, as a first step towards understanding the global biogeochemical significance of arid-land microbial communities. The specific objectives were to characterize bacterial diversity and infer the possible metabolic potential of these bacterial communities, and to evaluate the influence of moisture exposure on community structure. In addition, the strengths and limitations of available tools for probing microbial diversity and activity in terrestrial ecosystems were characterized for the

Style APA, Harvard, Vancouver, ISO itp.

37

Blume, Theresa, Erwin Zehe, and Axel Bronstert. "Use of soil moisture dynamics and patterns at different spatio-temporal scales for the investigation of subsurface flow processes." Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2010/4492/.

Pełny tekst źródła

Streszczenie:

Spatial patterns as well as temporal dynamics of soil moisture have a major influence on runoff generation. The investigation of these dynamics and patterns can thus yield valuable information on hydrological processes, especially in data scarce or previously ungauged catchments. The combination of spatially scarce but temporally high resolution soil moisture profiles with episodic and thus temporally scarce moisture profiles at additional locations provides information on spatial as well as temporal patterns of soil moisture at the hillslope transect scale. This approach is better suited to d

Style APA, Harvard, Vancouver, ISO itp.

38

Harrison-Kirk, T. "The effects of drying and rewetting cycles on carbon and nitrogen dynamics in soils of differing textures and organic matter contents." Lincoln University, 2008. http://hdl.handle.net/10182/656.

Pełny tekst źródła

Streszczenie:

Many researchers have reported differences in soil C and N dynamics between soils of different textures and/or soil organic matter contents. However, it has proven difficult to determine the exact relationships and mechanisms between C and N dynamics and soil texture/SOM. There are few studies that consider how these soil physical and chemical conditions influence the effects of drying and rewetting on the mineralisation of C and N and the microbial transformations that follow. The objectives of this study were: 1) To determine the effects of repeated drying and rewetting cycles on C and N dyn

Style APA, Harvard, Vancouver, ISO itp.

39

Dang, Duy-Minh. "Dynamics of nitrogen and carbon cycling associated with greenhouse gas emissions in the salt-affected soils." Phd thesis, Canberra, ACT : The Australian National University, 2018. http://hdl.handle.net/1885/148885.

Pełny tekst źródła

Streszczenie:

Salinity is one of the most severe environmental factors limiting the productivity of aquaculture and agriculture. The worldwide area of salt-affected soils is predicted to become even more widespread in the future due to climate change and sea-level rise. However, the soil nitrogen and carbon dynamics associated with soil-induced gas emissions under salinity are not well understood. The main objective of this study was to investigate changes of soil carbon and nitrogen cycling associated with greenhouse gas emissions, plant growth and fertilizer re

Style APA, Harvard, Vancouver, ISO itp.

40

Shrestha, Paliza. "Water Quality Performance And Greenhouse Gas Flux Dynamics From Compost-Amended Bioretention Systems & Potential Trade-Offs Between Phytoremediation And Water Quality Stemming From Compost Amendments." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/851.

Pełny tekst źródła

Streszczenie:

Stormwater runoff from existing impervious surfaces needs to be managed to protect downstream waterbodies from hydrologic and water quality impacts associated with development. As urban expansion continues at a rapid pace, increasing impervious cover, and climate change yields more frequent extreme precipitation events, increasing the need for improved stormwater management. Although green infrastructure such as bioretention has been implemented in urban areas for stormwater quality improvements and volume reductions, these systems are seldom monitored to validate their performance. Herein, we

Style APA, Harvard, Vancouver, ISO itp.

41

Kusumo, Bambang Hari. "Development of field techniques to predict soil carbon, soil nitrogen and root density from soil spectral reflectance : a thesis presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/1015.

Pełny tekst źródła

Streszczenie:

The objectives of this research were to develop and evaluate a field method for in situ measurement of soil properties using visible near-infrared reflectance spectroscopy (Vis-NIRS). A probe with an independent light source for acquiring soil reflectance spectra from soil cores was developed around an existing portable field spectrometer (ASD FieldSpecPro, Boulder, CO, USA; 350-2500 nm). Initial experiments tested the ability of the acquired spectra to predict plant root density, an important property in soil carbon dynamics. Reflectance spectra were acquired from soil containing ryegrass roo

Style APA, Harvard, Vancouver, ISO itp.

42

Stark, Christine H. "Effects of long- and short-term crop management on soil biological properties and nitrogen dynamics." Lincoln University, 2005. http://hdl.handle.net/10182/30.

Pełny tekst źródła

Streszczenie:

To date, there has been little research into the role of microbial community structure in the functioning of the soil ecosystem and on the links between microbial biomass size, microbial activity and key soil processes that drive nutrient availability. The maintenance of structural and functional diversity of the soil microbial community is essential to ensure the sustainability of agricultural production systems. Soils of the same type with similar fertility that had been under long-term organic and conventional crop management in Canterbury, New Zealand, were selected to investigate relation

Style APA, Harvard, Vancouver, ISO itp.

43

Anderson, Axel Edward. "Patterns of water table dynamics and runoff generation in a watershed with preferential flow networks." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/504.

Pełny tekst źródła

Streszczenie:

Our understanding of subsurface flow depends on assumptions of how event characteristics and spatial scale affect the relationships between subsurface water velocity, discharge, water table dynamics, and runoff response. In this thesis, three chapters explore some of these patterns for a hillslope and small watershed in coastal British Columbia. In the first chapter, tracers were applied under natural and steady state conditions to determine the relationship between lateral tracer velocities and various hillslope and event characteristics; such as hillslope subsurface flow, rainfall intensity,

Style APA, Harvard, Vancouver, ISO itp.

44

Valentín-Vargas, Alexis. "Analysis of the Phylogenetic and Functional Dynamics of Microbial Communities in Metalliferous, Acid-Generating Mine Tailings Subject to a Phytostabilization Treatment." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/307007.

Pełny tekst źródła

Streszczenie:

Extensive research conducted over the last decade has demonstrated the great potential of phytostabilization for the reclamation of abandoned mine tailing piles. The right combination of plant species and soil amendments can facilitate the growth of a permanent vegetative cover on the tailings that will help minimize the mobilization of metal-bearing particles by means of wind dispersion and water erosion. Despite previous research efforts, the diversity and potential role of microbial populations inhabiting the root zone of the plants on the stabilization of the metal(loid) contaminants remai

Style APA, Harvard, Vancouver, ISO itp.

45

Sabesan, Aarthy. "Geo-spatial assessment of the impact of land cover dynamics and distribution of land resources on soil and water quality in the Santa Fe River watershed." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0007460.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

46

Otoo, James Nii Aboh. "Suspended Sediment Transport Dynamics and Sediment Yields in Relation to Watershed Characteristics, Upper Green River Basin, Kentucky." TopSCHOLAR®, 2010. http://digitalcommons.wku.edu/theses/158.

Pełny tekst źródła

Streszczenie:

Sediment delivery is a major problem in the Green River, Kentucky, home of 71 of the state’s 103 known mussel species and 151 fish species. The river also provides water for many of its surrounding counties. This research focuses on how suspended sediment loads, grain size, and sediment concentration during runoff events are related to watershed characteristics. The research characterized suspended sediment loads, grain size, and sediment concentration during runoff events and how they were related to watershed characteristics such as hydro-climatic regime, watershed size, geology and soils,

Style APA, Harvard, Vancouver, ISO itp.

47

Medeiros, João Carlos. "Funções de pedotransferência em estudos do funcionamento hídrico do solo da região sudeste do estado do Pará." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-26032012-105416/.

Pełny tekst źródła

Streszczenie:

O entendimento dos processos hídricos do solo, tais como infiltração, drenagem, e disponibilidade de água para as plantas, necessita do conhecimento da relação entre o conteúdo de água no solo e o potencial matricial, representado pela curva de retenção de água no solo (CRA). No entanto, a determinação da CRA demanda tempo e possui um custo relativo alto. Uma alternativa é sua determinação através de modelos que estimam a CRA a partir de alguns atributos de fácil determinação, chamados funções de pedotransferência (FPT). A finalidade desse trabalho foi quantificar os efeitos da mudança do uso

Style APA, Harvard, Vancouver, ISO itp.

48

Bossa, Yaovi Aymar [Verfasser]. "Multi-scale modeling of sediment and nutrient flow dynamics in the Oueme catchment (Benin) : towards an assessment of global change effects on soil degradation and water quality / Yaovi Aymar Bossa." Bonn : Universitäts- und Landesbibliothek Bonn, 2012. http://d-nb.info/1044082437/34.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

49

Bertram, Janet. "Effects of cow urine and its constituents on soil microbial populations and nitrous oxide emissions." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1334.

Pełny tekst źródła

Streszczenie:

New Zealand’s 5.3 million strong dairy herd returns approximately 106 million litres of urine to pasture soils daily. The urea in that urine is rapidly hydrolysed to ammonium (NH₄⁺), which is then nitrified, with denitrification of nitrate (NO₃⁻) ensuing. Nitrous oxide (N₂O), a potent greenhouse gas (GHG), is produced via nitrification and denitrification, which are enzyme-catalysed processes mediated by soil microbes. Thus microbes are linked intrinsically to urine patch chemistry. However, few previous studies have investigated microbial dynamics in urine patches. Therefore the objective of

Style APA, Harvard, Vancouver, ISO itp.

50

Campos, ângelo Antônio. "Simulação numérica do movimento de água e solutos em solos não saturados." Universidade Federal do Espírito Santo, 2007. http://repositorio.ufes.br/handle/10/6583.

Pełny tekst źródła

Streszczenie:

Made available in DSpace on 2016-12-23T14:37:34Z (GMT). No. of bitstreams: 1 ANGELO ANTONIO CAMPOS.pdf: 660395 bytes, checksum: 449c13f957ade5ea58be1aee63b345e2 (MD5) Previous issue date: 2007-03-30<br>The interest in studying problems of underground drainage and solutos transport not in soils saturated it has been increasing significantly in the last years, mainly because of the growing concern with the quality of the soil and of the environment in general. Applied fertilizers in agricultural lands move below the zone radicular of the plants and they can contaminate underground water tables

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!