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soil compaction and soil homogenisation accompanied by a reduced input of organic matter and a reduced soil water storage capacity. This is assumed to increase soil vulnerability to further intensive grazing. Particularly, a further diminishing amount of plant available water is regarded as one of the most limiting factors for a sustainable development of steppe grassland ecosystems. In order to maintain a functioning of soil water and nutrient household, future land use in Inner Mongolia therefore needs to focus on protecting and restoring degraded grassland ecosystem from intensive grazing and animal trampling. Acknowledgements 34 The grants for this project were provided by the German Research Council (DFG) in the framework of the Interdisciplinary Research Project MAGIM (Matter fluxes in grasslands of Inner Mongolia as influenced by stocking rate), sub-project P8 (project code Ho 911/35). Dr. Angelika Kölbl is acknowledged for the manuscript revision. References Binkley, D., Singer, F., Kaye, M., Rochelle, R., 2003. Influence of elk grazing on soil properties in Rocky Mountain National Park. Forest Ecol. Manag. 185(3), 239-247. Buczko, U., Bens, O., Hüttl, R.F., 2005. Variability of soil water repellency in sandy forest soils with different stand structure <strong>und</strong>er Scots pine (Pinus sylvestris) and beech (Fagus sylvatica). Geoderma 126, 317-336. Buttafuocoa, G., Castrignano, A., Busonic, E., Dimased, A.C., 2005. Studying the spatial structure evolution of soil water content using multivariate geostatistics. J. Hydrol. 311, 202-218. Cambardella, C.A., Moorman, T.B., Parkin, T.B., Karlen, D.L., Turco, R.F., Konopka, A.E., 1994. Field scale variability of soil properties in Central Iowa soils. Soil Sci. Soc. Am. J. 58, 1501-1511. Cassel, D.K., Nelson,L.A., 1985. Spatial and temporal variability of soil physical properties of norfolk loamy sand as affected by tillage. Soil Till. Res. 5(1), 5-17. Daniel, J.A., Potter, K., Altom, W., Aljoe, H., Stevens, R., 2002. Long-term
Chapter 2 Spatial variability of soil properties affected by grazing intensity in Inner Mongolia grassland grazing density impacts on soil compaction. Transactions of the Asae 45(6), 1911-1915. DeBano, L.F., 1981. Water repellent soils: a state-of-the-art. Gen. Tech. Rep. PSW-46. Pacific outhwest Forest and Range Experiment Station, Berkeley, California, pp. 21. Dekker, L.W., Doerr, S.H., Oostindie, K., Ziogas, A.K., Ritsema, C.J., 2001. Water repellency and critical soil water content in a dune sand. Soil Sci. Soc. Am. J. 65, 1667-1674. Dekker, L.W., Ritsema, C.J., 1994. How water moves in a water repellent sandy soil: 1. Potential and actual water repellency. Water Resour. Res. 30, 2507-2517. Dekker, L.W., Ritsema, C.J., 2000. Wetting patterns and moisture variability in water repellent Dutch soils. J. Hydrol. 231/232, 148-164. Famiglietti, J.S., Rudnicki, J.W., Rodell, M., 1998. Variability in surface moisture content along a hillslope transect: Rattlesnake Hill, Texas. J. Hydrol. 210, 259-281. Ferrero, A., Usowicz, B., Lipiec, J., 2005. Effects of tractor traffic on spatial variability of soil strength and water content in grass covered and cultivated sloping vineyard. Soil Till. Res. 84, 127-138. Fullen, M.A., Zheng, Y., Brandsma, R.T., 1996. Comparison of soil and sediment properties of a loamy sand soil. Soil Technology 10, 35-45. Gerke, H.H., Hangen, E., Schaaf, W., Hüttl, R.F., 2001. Spatial variability of potential water repellency in a lignitic mine soil afforested with Pinus nigra. Geoderma 102, 255-274. Goovaerts, P., Sonnet, P., 1993. Study of spatial and temporal variations of hydrogeochemical variables using factorial kriging analysis. In: Soares, A. (Ed.), Geostatistics Troia ’92, vol. 2. Kluwer Academic Publishers, Dordrecht, pp. 745-756. Goovaerts, P., 1998. Geostatistical tools for characterizing the spatial variability of microbiological and physico-chemical soil properties. Biol. Fertil. Soils 27, 315-334. 35
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SCHRIFTENREIHE Institut für Pflanz
Page 3 and 4: Aus dem Institut für Pflanzenernä
Page 5: I Table of contents I Table of cont
Page 8 and 9: controlling soil moisture are of pa
Page 11 and 12: Zusammenfassung Überweidung wird a
Page 13 and 14: Die Beweidung beieinflusst besonder
Page 15 and 16: II List of figures Fig. 2.1. Locati
Page 17 and 18: measured soil moisture in time stab
Page 19 and 20: III List of tables Table 2.1. Descr
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Page 25 and 26: Chapter 1 Introduction water in spr
Page 27 and 28: Chapter 1 Introduction requires the
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Page 101 and 102: Soil water content (%) 40 30 20 10
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Chapter 5 Modeling Grazing Effects
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Chapter 6 Modeling of Coupled Water
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Chapter 7 General discussion and co
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References Chapter 7 General discus
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8. ACKNOWLEDGMENTS Firstly I would
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Curriculum Vitae M.Sc. Ying Zhao Of
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Schriftenreihe des Instituts Neuere
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