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Journal articles on the topic 'Soil-plant-atmosphere'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Haygarth, Philip M., Anthony F. Harrison, and Kevin C. Jones. "Plant Selenium from Soil and the Atmosphere." Journal of Environmental Quality 24, no. 4 (July 1995): 768–71. http://dx.doi.org/10.2134/jeq1995.00472425002400040030x.

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2

D. H. Fleisher, D. J. Timlin, Y. Yang, V. R. Reddy, and K. R. Reddy. "Uniformity of Soil-Plant-Atmosphere-Research Chambers." Transactions of the ASABE 52, no. 5 (2009): 1721–31. http://dx.doi.org/10.13031/2013.29134.

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3

Goldsmith, Gregory R. "Changing directions: the atmosphere-plant-soil continuum." New Phytologist 199, no. 1 (May 28, 2013): 4–6. http://dx.doi.org/10.1111/nph.12332.

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4

Werner, Christiane, and Maren Dubbert. "Resolving rapid dynamics of soil-plant-atmosphere interactions." New Phytologist 210, no. 3 (April 13, 2016): 767–69. http://dx.doi.org/10.1111/nph.13936.

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5

Baveye, Philippe C. "Review of Soil Physics with Python: Transport in the Soil-Plant-Atmosphere." Vadose Zone Journal 15, no. 3 (March 2016): vzj2015.12.0162br. http://dx.doi.org/10.2136/vzj2015.12.0162br.

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6

Boanares, Daniela, Rafael S. Oliveira, Rosy M. S. Isaias, Marcel G. C. França, and Josep Peñuelas. "The Neglected Reverse Water Pathway: Atmosphere–Plant–Soil Continuum." Trends in Plant Science 25, no. 11 (November 2020): 1073–75. http://dx.doi.org/10.1016/j.tplants.2020.07.012.

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7

I. A., Nweke,. "Potentials of Intercropping Systems to Soil - Water - Plant-Atmosphere." Agricultural Science 2, no. 1 (March 10, 2020): p31. http://dx.doi.org/10.30560/as.v2n1p31.

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A well planned intercropping system can efficiently serve as alternative to input such as fertilizer, herbicides, pesticides and pathogenicides. The interaction between the intercrop species, soil and environmental factors have positive effects on crop nutrition and photosynthesis and these have improved the nutrient content of the soil and different intercrop components. The high percentage ability of the intercrop species to suppress weeds especially when legume crops are involved in the plan, improves the physicochemical properties of the soil, contributes to the health of the intercrop species as the intercrop promotes the synthesis of allelopathic compounds and phenolic compounds such as anthocyanins and flavonoids which may serve as a deterrent to diseases and pests and improve the quality of the intercrop plants. Due to its inherent biological, biochemical and physiochemical properties intercropping system may be used to promote sustainable crop production and for safe management and cost-effective agricultural activities.

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8

Struik, P. C. "Modelling and parameterization of the soil-plant-atmosphere system." Potato Research 39, no. 1 (March 1996): 123–24. http://dx.doi.org/10.1007/bf02358211.

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9

Balashov, Eugene, Natalya Buchkina, Elena Rizhiya, and Csilla Farkas. "Field Validation of DNDC and SWAP Models for Temperature and Water Content of Loamy and Sandy Loam Spodosols." International Agrophysics 28, no. 2 (April 1, 2014): 133–42. http://dx.doi.org/10.2478/intag-2014-0001.

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Abstract The objectives of the research were to: fulfil the preliminary assessment of the sensitivity of the soil, water, atmosphere, and plant and denitrification and decomposition models to variations of climate variables based on the existing soil database; validate the soil, water, atmosphere, and plant and denitrification and decomposition modelled outcomes against measured records for soil temperature and water content. The statistical analyses were conducted by the sensitivity analysis, Nash-Sutcliffe efficiency coefficients and root mean square error using measured and modelled variables during three growing seasons. Results of sensitivity analysis demonstrated that: soil temperatures predicted by the soil, water, atmosphere, and plant model showed a more reliable sensitivity to the variations of input air temperatures; soil water content predicted by the denitrification and decomposition model had a better reliability in the sensitivity to daily precipitation changes. The root mean square errors and Nash-Sutcliffe efficiency coefficients demonstrated that: the soil, water, atmosphere, and plant model had a better efficiency in predicting seasonal dynamics of soil temperatures than the denitrification and decomposition model; and among two studied models, the denitrification and decomposition model showed a better capability in predicting the seasonal dynamics of soil water content.

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10

AODA, Tadao, and Shoji YOSHIDA. "Simulation model for soil water movement in soil-plant-atmosphere continuum considering hysteresis." Journal of Japan Society of Hydrology and Water Resources 8, no. 3 (1995): 322–34. http://dx.doi.org/10.3178/jjshwr.8.322.

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11

KING, GARY M., and HEIDI CROSBY. "Impacts of plant roots on soil CO cycling and soil-atmosphere CO exchange." Global Change Biology 8, no. 11 (September 30, 2002): 1085–93. http://dx.doi.org/10.1046/j.1365-2486.2002.00545.x.

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12

Ouyang, Ying. "Phytoremediation: modeling plant uptake and contaminant transport in the soil–plant–atmosphere continuum." Journal of Hydrology 266, no. 1-2 (September 2002): 66–82. http://dx.doi.org/10.1016/s0022-1694(02)00116-6.

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13

Giulivo, C. "HORMONAL CONTROL OF WATER TRANSPORT IN SOIL-PLANT-ATMOSPHERE CONTINUUM." Acta Horticulturae, no. 179 (July 1986): 385–94. http://dx.doi.org/10.17660/actahortic.1986.179.60.

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14

Winkel, Lenny, Bas Vriens, Gerrad Jones, Leila Schneider, Elizabeth Pilon-Smits, and Gary Bañuelos. "Selenium Cycling Across Soil-Plant-Atmosphere Interfaces: A Critical Review." Nutrients 7, no. 6 (May 29, 2015): 4199–239. http://dx.doi.org/10.3390/nu7064199.

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15

Vera, J., I. Abrisqueta, W. Conejero, and M. C. Ruiz-Sánchez. "Precise sustainable irrigation: a review of soil-plant-atmosphere monitoring." Acta Horticulturae, no. 1150 (January 2017): 195–202. http://dx.doi.org/10.17660/actahortic.2017.1150.28.

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16

Ireson, Andrew M., Garth van der Kamp, Uri Nachshon, and Adrian P. Butler. "Modeling Groundwater-Soil-Plant-Atmosphere Exchanges in Fractured Porous Media." Procedia Environmental Sciences 19 (2013): 321–30. http://dx.doi.org/10.1016/j.proenv.2013.06.037.

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17

Donovan, Lisa A., and John Sperry. "Scaling the soil–plant–atmosphere continuum: from physics to ecosystems." Trends in Plant Science 5, no. 12 (December 2000): 510–12. http://dx.doi.org/10.1016/s1360-1385(00)01794-5.

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18

Bristow, Keith L. "Introduction: The Soil-Plant-Atmosphere Continuum-Gaps and Unresolved Issues." Agronomy Journal 95, no. 6 (November 2003): 1349–51. http://dx.doi.org/10.2134/agronj2003.1349.

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19

Welch, S. M., J. L. Roe, S. Das, Z. Dong, R. He, and M. B. Kirkham. "Merging genomic control networks and soil-plant-atmosphere-continuum models." Agricultural Systems 86, no. 3 (December 2005): 243–74. http://dx.doi.org/10.1016/j.agsy.2004.07.019.

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20

Sinclair, Thomas R. "“Water dynamics in the soil‐plant‐atmosphere system” by J.T. Ritchie, Plant and Soil (1981) 58:81–96." Crop Science 60, no. 2 (February 7, 2020): 541–43. http://dx.doi.org/10.1002/csc2.20037.

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21

Lee, Young-Hee, and Hee-Jeong Lim. "Evaluation of Modified Soil-Plant-Atmosphere Model (mSPA) to Simulate Net Ecosystem Carbon Exchange Over a Deciduous Forest at Gwangneung in 2006." Korean Journal of Agricultural and Forest Meteorology 11, no. 3 (September 30, 2009): 87–99. http://dx.doi.org/10.5532/kjafm.2009.11.3.087.

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22

Dainese, Roberta, Giuseppe Tedeschi, Thierry Fourcaud, and Alessandro Tarantino. "Measurement of xylem water pressure using High-Capacity Tensiometer and benchmarking against Pressure Chamber and Thermocouple Psychrometer." E3S Web of Conferences 195 (2020): 03014. http://dx.doi.org/10.1051/e3sconf/202019503014.

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The response of the shallow portion of the ground (vadose zone) and of earth structures is affected by the interaction with the atmosphere. Rainwater infiltration and evapotranspiration affect the stability of man-made and natural slopes and cause shallow foundations and embankments to settle and heave. Very frequently, the ground surface is covered by vegetation and, as a result, transpiration plays a major role in ground-atmosphere interaction. The soil, the plant, and the atmosphere form a continuous hydraulic system, which is referred to as Soil-Plant-Atmosphere Continuum (SPAC). The SPAC actually represents the ‘boundary condition’ of the geotechnical water flow problem. Water flow in soil and plant takes place because of gradients in hydraulic head triggered by the negative water pressure (water tension) generated in the leaf stomata. To study the response of the SPAC, (negative) water pressure needs to be measured not only in the soil but also in the plant. The paper presents a novel technique to measure the xylem water pressure based on the use of the High-Capacity Tensiometer (HCT), which is benchmarked against conventional techniques for xylem water pressure measurements, i.e. the Pressure Chamber (PC) and the Thermocouple Psychrometer (TP).

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23

Fu, Min, Lixin Tian, Gaogao Dong, Ruijin Du, Peipei Zhou, and Minggang Wang. "Modeling on Regional Atmosphere-Soil-Land Plant Carbon Cycle Dynamic System." Sustainability 8, no. 4 (March 25, 2016): 303. http://dx.doi.org/10.3390/su8040303.

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24

Jones, H. G. "IRRIGATION SCHEDULING â COMPARISON OF SOIL, PLANT AND ATMOSPHERE MONITORING APPROACHES." Acta Horticulturae, no. 792 (June 2008): 391–403. http://dx.doi.org/10.17660/actahortic.2008.792.46.

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25

Naharro, Rocío, José María Esbrí, José Ángel Amorós, Francisco J. García-Navarro, and Pablo Higueras. "Assessment of mercury uptake routes at the soil-plant-atmosphere interface." Geochemistry: Exploration, Environment, Analysis 19, no. 2 (July 2, 2018): 146–54. http://dx.doi.org/10.1144/geochem2018-019.

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26

Manzoni, Stefano, Giulia Vico, Amilcare Porporato, and Gabriel Katul. "Biological constraints on water transport in the soil–plant–atmosphere system." Advances in Water Resources 51 (January 2013): 292–304. http://dx.doi.org/10.1016/j.advwatres.2012.03.016.

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27

Anderegg, William R. L., Anna T. Trugman, David R. Bowling, Guido Salvucci, and Samuel E. Tuttle. "Plant functional traits and climate influence drought intensification and land–atmosphere feedbacks." Proceedings of the National Academy of Sciences 116, no. 28 (June 24, 2019): 14071–76. http://dx.doi.org/10.1073/pnas.1904747116.

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The fluxes of energy, water, and carbon from terrestrial ecosystems influence the atmosphere. Land–atmosphere feedbacks can intensify extreme climate events like severe droughts and heatwaves because low soil moisture decreases both evaporation and plant transpiration and increases local temperature. Here, we combine data from a network of temperate and boreal eddy covariance towers, satellite data, plant trait datasets, and a mechanistic vegetation model to diagnose the controls of soil moisture feedbacks to drought. We find that climate and plant functional traits, particularly those related to maximum leaf gas exchange rate and water transport through the plant hydraulic continuum, jointly affect drought intensification. Our results reveal that plant physiological traits directly affect drought intensification and indicate that inclusion of plant hydraulic transport mechanisms in models may be critical for accurately simulating land–atmosphere feedbacks and climate extremes under climate change.

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28

Nakaya, K., K. Shoji, and T. Okano. "NUMERICAL SIMULATION OF NEW MULTIPLE LAYER PLANT CANOPY MODEL:APPLICATION TO THE SOIL-PLANT-ATMOSPHERE SYSTEM." Acta Horticulturae, no. 440 (December 1996): 135–40. http://dx.doi.org/10.17660/actahortic.1996.440.24.

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29

Trautz, Andrew C., Tissa H. Illangasekare, Ignacio Rodriguez-Iturbe, Katharina Heck, and Rainer Helmig. "Development of an experimental approach to study coupled soil-plant-atmosphere processes using plant analogs." Water Resources Research 53, no. 4 (April 2017): 3319–40. http://dx.doi.org/10.1002/2016wr019884.

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30

Brüggemann, N., A. Gessler, Z. Kayler, S. G. Keel, F. Badeck, M. Barthel, P. Boeckx, et al. "Carbon allocation and carbon isotope fluxes in the plant-soil-atmosphere continuum: a review." Biogeosciences 8, no. 11 (November 28, 2011): 3457–89. http://dx.doi.org/10.5194/bg-8-3457-2011.

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Abstract. The terrestrial carbon (C) cycle has received increasing interest over the past few decades, however, there is still a lack of understanding of the fate of newly assimilated C allocated within plants and to the soil, stored within ecosystems and lost to the atmosphere. Stable carbon isotope studies can give novel insights into these issues. In this review we provide an overview of an emerging picture of plant-soil-atmosphere C fluxes, as based on C isotope studies, and identify processes determining related C isotope signatures. The first part of the review focuses on isotopic fractionation processes within plants during and after photosynthesis. The second major part elaborates on plant-internal and plant-rhizosphere C allocation patterns at different time scales (diel, seasonal, interannual), including the speed of C transfer and time lags in the coupling of assimilation and respiration, as well as the magnitude and controls of plant-soil C allocation and respiratory fluxes. Plant responses to changing environmental conditions, the functional relationship between the physiological and phenological status of plants and C transfer, and interactions between C, water and nutrient dynamics are discussed. The role of the C counterflow from the rhizosphere to the aboveground parts of the plants, e.g. via CO2 dissolved in the xylem water or as xylem-transported sugars, is highlighted. The third part is centered around belowground C turnover, focusing especially on above- and belowground litter inputs, soil organic matter formation and turnover, production and loss of dissolved organic C, soil respiration and CO2 fixation by soil microbes. Furthermore, plant controls on microbial communities and activity via exudates and litter production as well as microbial community effects on C mineralization are reviewed. A further part of the paper is dedicated to physical interactions between soil CO2 and the soil matrix, such as CO2 diffusion and dissolution processes within the soil profile. Finally, we highlight state-of-the-art stable isotope methodologies and their latest developments. From the presented evidence we conclude that there exists a tight coupling of physical, chemical and biological processes involved in C cycling and C isotope fluxes in the plant-soil-atmosphere system. Generally, research using information from C isotopes allows an integrated view of the different processes involved. However, complex interactions among the range of processes complicate or currently impede the interpretation of isotopic signals in CO2 or organic compounds at the plant and ecosystem level. This review tries to identify present knowledge gaps in correctly interpreting carbon stable isotope signals in the plant-soil-atmosphere system and how future research approaches could contribute to closing these gaps.

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31

Megonigal, J. P., S. C. Whalen, D. T. Tissue, B. D. Bovard, A. S. Allen, and D. B. Albert. "A Plant-Soil-Atmosphere Microcosm for Tracing Radiocarbon from Photosynthesis through Methanogenesis." Soil Science Society of America Journal 63, no. 3 (May 1999): 665–71. http://dx.doi.org/10.2136/sssaj1999.03615995006300030033x.

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32

Gil-Pelegrin, E., I. Aranda, J. J. Peguero-Pina, and A. Vilagrosa. "The soil-plant-atmosphere continuous as an integrating model of forest ecophysiology." Investigación Agraria: Sistemas y Recursos Forestales 14, no. 3 (December 1, 2005): 358. http://dx.doi.org/10.5424/srf/2005143-00927.

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33

Mikhailenko, I. M., V. N. Timoshin, and T. N. Danilova. "Mathematical modeling of the “soil-plant-atmosphere” system exemplified by perennial grasses." Russian Agricultural Sciences 35, no. 4 (August 2009): 284–88. http://dx.doi.org/10.3103/s106836740904020x.

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34

Jun-Shan, LIU, GAO Qiong, ZHU Yu-Jie, and WANG Kun. "HYDRAULIC REDISTRIBUTION: NEWLY RECOGNIZED SMALL CYCLE WITHIN THE SOIL-PLANT-ATMOSPHERE CONTINUUM." Chinese Journal of Plant Ecology 31, no. 5 (2007): 794–803. http://dx.doi.org/10.17521/cjpe.2007.0101.

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35

Liu, Wenjun, and Zhijing Chen. "Dynamical behaviour of fractional-order atmosphere-soil-land plant carbon cycle system." AIMS Mathematics 5, no. 2 (2020): 1532–49. http://dx.doi.org/10.3934/math.2020105.

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36

Braud, I., A. C. Dantas-Antonino, M. Vauclin, J. L. Thony, and P. Ruelle. "A simple soil-plant-atmosphere transfer model (SiSPAT) development and field verification." Journal of Hydrology 166, no. 3-4 (April 1995): 213–50. http://dx.doi.org/10.1016/0022-1694(94)05085-c.

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37

Riedo, Marcel, Celia Milford, Martin Schmid, and Mark A. Sutton. "Coupling soil–plant–atmosphere exchange of ammonia with ecosystem functioning in grasslands." Ecological Modelling 158, no. 1-2 (December 2002): 83–110. http://dx.doi.org/10.1016/s0304-3800(02)00169-2.

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38

Coelho, M. B., F. J. Villalobos, and L. Mateos. "Modeling root growth and the soil–plant–atmosphere continuum of cotton crops." Agricultural Water Management 60, no. 2 (May 2003): 99–118. http://dx.doi.org/10.1016/s0378-3774(02)00165-8.

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39

Schjoerring, Jan K., Søren Husted, and Mette M. Poulsen. "Soil–plant–atmosphere ammonia exchange associated with calluna vulgaris and deschampsia flexuosa." Atmospheric Environment 32, no. 3 (February 1998): 507–12. http://dx.doi.org/10.1016/s1352-2310(97)00010-1.

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40

Melintescu, A., and D. Galeriu. "A versatile model for tritium transfer from atmosphere to plant and soil." Radioprotection 40 (May 2005): S437—S442. http://dx.doi.org/10.1051/radiopro:2005s1-064.

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41

Sperry, John S., Volker Stiller, and Uwe G. Hacke. "Xylem Hydraulics and the Soil-Plant-Atmosphere Continuum: Opportunities and Unresolved Issues." Agronomy Journal 95, no. 6 (November 2003): 1362–70. http://dx.doi.org/10.2134/agronj2003.1362.

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42

Anderson, Martha C., William P. Kustas, and John M. Norman. "Upscaling and Downscaling-A Regional View of the Soil-Plant-Atmosphere Continuum." Agronomy Journal 95, no. 6 (November 2003): 1408–23. http://dx.doi.org/10.2134/agronj2003.1408.

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43

Chen, Xinli, and Han Y. H. Chen. "Global effects of plant litter alterations on soil CO2 to the atmosphere." Global Change Biology 24, no. 8 (April 17, 2018): 3462–71. http://dx.doi.org/10.1111/gcb.14147.

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44

Niklaus, Pascal A., Xavier Le Roux, Franck Poly, Nina Buchmann, Michael Scherer-Lorenzen, Alexandra Weigelt, and Romain L. Barnard. "Plant species diversity affects soil–atmosphere fluxes of methane and nitrous oxide." Oecologia 181, no. 3 (April 2, 2016): 919–30. http://dx.doi.org/10.1007/s00442-016-3611-8.

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45

Brüggemann, N., A. Gessler, Z. Kayler, S. G. Keel, F. Badeck, M. Barthel, P. Boeckx, et al. "Carbon allocation and carbon isotope fluxes in the plant-soil-atmosphere continuum: a review." Biogeosciences Discussions 8, no. 2 (April 7, 2011): 3619–95. http://dx.doi.org/10.5194/bgd-8-3619-2011.

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Abstract. The terrestrial carbon (C) cycle has received increasing interest over the past few decades, however, there is still a lack of understanding of the fate of newly assimilated C allocated within plants and to the soil, stored within ecosystems and lost to the atmosphere. Stable carbon isotope studies can give novel insights into these issues. In this review we provide an overview of an emerging picture of plant-soil-atmosphere C fluxes, as based on C isotope studies, and identify processes determining related C isotope signatures. The first part of the review focuses on isotopic fractionation processes within plants during and after photosynthesis. The second major part elaborates on plant-internal and plant-rhizosphere C allocation patterns at different time scales (diel, seasonal, interannual), including the speed of C transfer and time lags in the coupling of assimilation and respiration, as well as the magnitude and controls of plant-soil C allocation and respiratory fluxes. Plant responses to changing environmental conditions, the functional relationship between the physiological and phenological status of plants and C transfer, and interactions between C, water and nutrient dynamics are discussed. The role of the C counterflow from the rhizosphere to the aboveground parts of the plants, e.g. via CO2 dissolved in the xylem water or as xylem-transported sugars, is highlighted. The third part is centered around belowground C turnover, focusing especially on above- and belowground litter inputs, soil organic matter formation and turnover, production and loss of dissolved organic C, soil respiration and CO2 fixation by soil microbes. Furthermore, plant controls on microbial communities and activity via exudates and litter production as well as microbial community effects on C mineralization are reviewed. The last part of the paper is dedicated to physical interactions between soil CO2 and the soil matrix, such as CO2 diffusion and dissolution processes within the soil profile. From the presented evidence we conclude that there exists a tight coupling of physical, chemical and biological processes involved in C cycling and C isotope fluxes in the plant-soil-atmosphere system. Generally, research using information from C isotopes allows an integrated view of the different processes involved. However, complex interactions among the range of processes complicate or impede the interpretation of isotopic signals in CO2 or organic compounds at the plant and ecosystem level. This is where new research approaches should be aimed at.

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46

Wang, Yunfei, Yijian Zeng, Lianyu Yu, Peiqi Yang, Christiaan Van der Tol, Qiang Yu, Xiaoliang Lü, Huanjie Cai, and Zhongbo Su. "Integrated modeling of canopy photosynthesis, fluorescence, and the transfer of energy, mass, and momentum in the soil–plant–atmosphere continuum (STEMMUS–SCOPE v1.0.0)." Geoscientific Model Development 14, no. 3 (March 11, 2021): 1379–407. http://dx.doi.org/10.5194/gmd-14-1379-2021.

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Abstract. Root water uptake by plants is a vital process that influences terrestrial energy, water, and carbon exchanges. At the soil, vegetation, and atmosphere interfaces, root water uptake and solar radiation predominantly regulate the dynamics and health of vegetation growth, which can be remotely monitored by satellites, using the soil–plant relationship proxy – solar-induced chlorophyll fluorescence. However, most current canopy photosynthesis and fluorescence models do not account for root water uptake, which compromises their applications under water-stressed conditions. To address this limitation, this study integrated photosynthesis, fluorescence emission, and transfer of energy, mass, and momentum in the soil–plant–atmosphere continuum system, via a simplified 1D root growth model and a resistance scheme linking soil, roots, leaves, and the atmosphere. The coupled model was evaluated with field measurements of maize and grass canopies. The results indicated that the simulation of land surface fluxes was significantly improved by the coupled model, especially when the canopy experienced moderate water stress. This finding highlights the importance of enhanced soil heat and moisture transfer, as well as dynamic root growth, on simulating ecosystem functioning.

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47

Maier, Martin, and Ulrike Hagemann. "Special Issue of the Journal of Plant Nutrition and Soil Science “Methodological advances in studying the soil-plant-atmosphere gas exchange”." Journal of Plant Nutrition and Soil Science 181, no. 1 (February 2018): 5–6. http://dx.doi.org/10.1002/jpln.201870015.

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48

Fan, Ying, Gonzalo Miguez-Macho, Esteban G. Jobbágy, Robert B. Jackson, and Carlos Otero-Casal. "Hydrologic regulation of plant rooting depth." Proceedings of the National Academy of Sciences 114, no. 40 (September 18, 2017): 10572–77. http://dx.doi.org/10.1073/pnas.1712381114.

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Plant rooting depth affects ecosystem resilience to environmental stress such as drought. Deep roots connect deep soil/groundwater to the atmosphere, thus influencing the hydrologic cycle and climate. Deep roots enhance bedrock weathering, thus regulating the long-term carbon cycle. However, we know little about how deep roots go and why. Here, we present a global synthesis of 2,200 root observations of >1,000 species along biotic (life form, genus) and abiotic (precipitation, soil, drainage) gradients. Results reveal strong sensitivities of rooting depth to local soil water profiles determined by precipitation infiltration depth from the top (reflecting climate and soil), and groundwater table depth from below (reflecting topography-driven land drainage). In well-drained uplands, rooting depth follows infiltration depth; in waterlogged lowlands, roots stay shallow, avoiding oxygen stress below the water table; in between, high productivity and drought can send roots many meters down to the groundwater capillary fringe. This framework explains the contrasting rooting depths observed under the same climate for the same species but at distinct topographic positions. We assess the global significance of these hydrologic mechanisms by estimating root water-uptake depths using an inverse model, based on observed productivity and atmosphere, at 30″ (∼1-km) global grids to capture the topography critical to soil hydrology. The resulting patterns of plant rooting depth bear a strong topographic and hydrologic signature at landscape to global scales. They underscore a fundamental plant–water feedback pathway that may be critical to understanding plant-mediated global change.

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49

Sprenger, Matthias, Doerthe Tetzlaff, and Chris Soulsby. "Soil water stable isotopes reveal evaporation dynamics at the soil–plant–atmosphere interface of the critical zone." Hydrology and Earth System Sciences 21, no. 7 (July 27, 2017): 3839–58. http://dx.doi.org/10.5194/hess-21-3839-2017.

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Abstract. Understanding the influence of vegetation on water storage and flux in the upper soil is crucial in assessing the consequences of climate and land use change. We sampled the upper 20 cm of podzolic soils at 5 cm intervals in four sites differing in their vegetation (Scots Pine (Pinus sylvestris) and heather (Calluna sp. and Erica Sp)) and aspect. The sites were located within the Bruntland Burn long-term experimental catchment in the Scottish Highlands, a low energy, wet environment. Sampling took place on 11 occasions between September 2015 and September 2016 to capture seasonal variability in isotope dynamics. The pore waters of soil samples were analyzed for their isotopic composition (δ2H and δ18O) with the direct-equilibration method. Our results show that the soil waters in the top soil are, despite the low potential evaporation rates in such northern latitudes, kinetically fractionated compared to the precipitation input throughout the year. This fractionation signal decreases within the upper 15 cm resulting in the top 5 cm being isotopically differentiated to the soil at 15–20 cm soil depth. There are significant differences in the fractionation signal between soils beneath heather and soils beneath Scots pine, with the latter being more pronounced. But again, this difference diminishes within the upper 15 cm of soil. The enrichment in heavy isotopes in the topsoil follows a seasonal hysteresis pattern, indicating a lag time between the fractionation signal in the soil and the increase/decrease of soil evaporation in spring/autumn. Based on the kinetic enrichment of the soil water isotopes, we estimated the soil evaporation losses to be about 5 and 10 % of the infiltrating water for soils beneath heather and Scots pine, respectively. The high sampling frequency in time (monthly) and depth (5 cm intervals) revealed high temporal and spatial variability of the isotopic composition of soil waters, which can be critical, when using stable isotopes as tracers to assess plant water uptake patterns within the critical zone or applying them to calibrate tracer-aided hydrological models either at the plot to the catchment scale.

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Jensen, L. S., T. Mueller, N. E. Nielsen, S. Hansen, G. J. Crocker, P. R. Grace, J. Klír, M. Körschens, and P. R. Poulton. "Simulating trends in soil organic carbon in long-term experiments using the soil-plant-atmosphere model DAISY." Geoderma 81, no. 1-2 (December 1997): 5–28. http://dx.doi.org/10.1016/s0016-7061(97)88181-5.

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