Grazing‐induced alterations of soil hydraulic properties and functions in Inner Mongolia, PR China

Journal of Plant Nutrition and Soil Science - Tập 172 Số 6 - Trang 769-776 - 2009
Julia Krümmelbein1, Stephan Peth2, Ying Zhao2, Rainer Horn2
1Brandenburg University of Technology Cottbus, Chair of Soil Protection and Recultivation, Konrad‐Wachsmann‐Allee 6, 03046 Cottbus, Germany
2Christian-Albrechts-University Kiel, Institute for Plant Nutrition and Soil Science, 24118 Kiel, Germany

Tóm tắt

AbstractIncreasing grazing intensities of sheep and goats can lead to an increasing degradation of grasslands. We investigated four plots of different grazing intensities (heavily grazed, winter‐grazed, ungrazed since 1999, and ungrazed since 1979) in Inner Mongolia, PR China, in order to study the effects of trampling‐induced mechanical stresses on soil hydraulic properties. Soil water transport and effective evapotranspiration under “heavily grazed” and “ungrazed since 1979” were modeled using the HYDRUS‐1D model. Model calibration was conducted using data collected from field studies. The field data indicate that grazing decreases soil C content and hydrophobicity. Pore volume is reduced, and water‐retention characteristics are modified, the saturated hydraulic conductivity decreases, and its anisotropy (vertical vs. horizontal conductivity) is influenced. Modeling results revealed higher evapotranspiration on the ungrazed site (ungrazed since 1979) compared to the grazed site (heavily grazed) due to wetter soil conditions, more dense vegetation, litter cover, and decreased runoff and drainage, respectively. Grazing modified the partitioning of evapotranspiration with lower transpiration and higher evaporation at the grazed site owing to reduced root water uptake due to reduced evaporation and a patchy soil cover.

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Tài liệu tham khảo

Allen R. G. Pereira L. S. Raes D. Smith M.(1998): Crop evapotranspiration. Guidelines for Computing Crop Water Requirements. Irrigation and Drainage Paper No. 56 FAO Rome p. 300.

10.2136/sssaj2001.1599

10.1002/jpln.200622022

10.1038/nature02850

10.2136/sssaj2000.6441479x

De Bano L.(1981): Water Repellent Soils: A State of the Art. United States Department of Agriculture Forest Service Pacific Southwest Forest and Ranae Experiment station General Technical Report PSW‐46. Publisher: Pacific Southwest Forest and Range Experiment Station P.O. Box 245 Berkeley California USA.

FAO(2006): World reference base for soil resources (2006): A framework for international classification correlation and communication. World Soil Resources Reports 103 2006 edition Food and Agriculture United Nations Rome 2006.

Gebhardt S. Fleige H. Horn R.(2006): Stress‐deformation behavior of different soil horizons and their change in saturated hydraulic conductivity as a function of load. Advances in GeoEcology 38 Catena Verlag Reiskirchen pp. 86–92.

10.1071/EA00102

10.1046/j.1365-2389.1999.00214.x

Hartge K. H. Horn R.(1992): Die physikalische Untersuchung von Böden. Ferdinand Enke Verlag Stuttgart Germany.

10.1006/jare.1998.0475

10.2136/sssaj2004.1131

10.1016/j.jaridenv.2006.12.009

10.1016/S1002-0160(06)60054-4

Kutilek M. Nielsen D. R.(1994): Soil Hydrology. Catena Reiskirchen.

10.1016/j.still.2005.02.001

Krümmelbein J. Wang Z. Zhao Y. Peth S. Horn R.(2006): Influence of various grazing intensities on soil stability soil structure and water balance of grassland soils in Inner Mongolia P.R. China. Advances in GeoEcology 38 Catena Verlag Reiskirchen pp. 93–101.

10.1016/j.still.2008.01.008

10.1016/S0168-1923(00)00101-5

10.1007/BF02705239

10.1016/j.jhydrol.2006.07.021

10.1016/j.still.2002.12.001

10.1111/j.1365-2389.2004.00683.x

10.2307/4002629

10.1016/S0167-1987(03)00105-3

Peth S. Horn R.(2006): Consequences of Grazing on Soil Physical and Mechanical Properties in Forest and Tundra Environments in Forbes B. C. Bölter M. Müller‐Wille L. Hukkinen J. Müller F. Gunslay N. Konstatinov Y. (eds.): Reindeer Management in Northernmost Europe. Vol. 184 Springer Berlin Germany pp. 217–243.

10.1071/AR9950733

10.1016/j.jaridenv.2006.12.001

10.1029/WR008i005p01204

Scheffer F. Schachtschabel P.(2002): Lehrbuch der Bodenkunde. Spektrum Akademischer Verlag Heidelberg Berlin Germany.

Schlichting E. Blume H.‐P. Stahr K.(1995): Bodenkundliches Praktikum. Blackwell Wissenschafts‐Verlag Berlin Wien.

Shao Y.(2001): Physics and Modelling of Wind Erosion. Kluwer Academic Publishers Dordrecht The Netherlands.

10.1071/SR98101

Šimůnek J. Sejna M. van Genuchten M. Th.(1998): The HYDRUS‐1D software package for simulating the one dimensional movement of water heat and multiple solutes in variably‐saturated media. Version 2.0. IGWMC‐TPS‐70. Int. GroundWater Modeling Center Colorado School of Mines Golden Colorado USA.

10.1016/j.geoderma.2007.09.004

Trnka M., 2005, Grassland statistical yield modelling with focus on “dry” seasons., Mitt. Ges. Pflanzenbauwiss., 17, 215

10.2136/sssaj1980.03615995004400050002x

van Genuchten M. Th. Leij F. J. Yates S. R.(1991): The RETC code for quantifying the hydraulic functions of unsaturated Soils. Ver. 1.0 EPA Rep. 600/2–91/065. U.S. Salinity Lab. USDA‐ARS Riverside CA USA.

10.1097/00010694-200107000-00002

10.1016/0167-1987(95)00473-6

White R. P. Murray S. Rohweder M.(2000): Pilot Analysis of Global Ecosystems: Grassland Ecosystems. World Resources Institute Washington D.C.

10.1029/2002JD002775

10.1016/j.ecolmodel.2007.02.019

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Thông tin xuất bản

Journal of Plant Nutrition and Soil Science

Tập 172 Số 6

769-776

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