| SOIL EROSION AND ITS IMPACTS ON ENVIRONMENT IN YIXING TEA PLANTATION OF JIANGSU PROVINCE |
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| 作者姓名： | ZHANGYah ZHANGHong PENGBu-zhuo YANGHao |
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| 作者单位： | [1]LaboratoryofMaterialCyclinginPedosphere,InstituteofSoilSciences,ChineseAcademyofSciences,Nanjing210008,P.R.China [2]DepartmentofUrbanandResourcesSciences,NanjingUniversity,Nanjing210093,P.RChina |
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| 基金项目： | UndertheauspicesoftheNationalNaturalScienceFoundationofChina(No.49831070andNo.49973027). |
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| 摘 要： | Soil erosion on sloping field has led to a lot of environmental problems. In order to reveal the seriousnessof the damage of soil erosion on sloping fields 137^Cs tracer method was used to estimate soil erosion rate. 137^Cs referenceinventory of 2200Bq/m^2 in Yixing, southern Jiangsu Province, was estimated and a model for estimating erosion of cultivat-od soil was established in order to avoid overestimating soil erosion rates. Then based on the soil erosion rates and mea-sured soil physical and chemical properties, direct and indirect impacts of soil erosion on environment were further dis-cussed. Direct impacts of erosion on environment included on-site and off-site impacts. The on-site impacts were thatsoil layer became thin, soil structure was deteriorated and soil nutrients decreased. The off-site impacts were that waterbodies were polluted. The indirect impacts of soil erosion on environment were the increase of fertilizer application andenergy consumption, and change of adaptability of land uses. Although erosion intensity was not serious in the studyarea, its environmental impacts should not be ignored because of great soil nutrient loss and coazseness of soil particles.
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| 关 键 词： | 江苏 宜兴市 土壤侵蚀 侵蚀模型 等效侵蚀模式 铯 水土保持 |
Soil erosion and its impacts on environment in Yixing tea plantation of Jiangsu Province |
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| ZHANGYah ZHANGHong PENGBu-zhuo YANGHao.SOIL EROSION AND ITS IMPACTS ON ENVIRONMENT IN YIXING TEA PLANTATION OF JIANGSU PROVINCE[J].Chinese Geographical Science,2003,13(2):142-148. |
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| Authors: | Zhang Yan Zhang Hong Peng Bu-zhuo Yang Hao |
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| Institution: | 1.Laboratory of Material Cycling in Pedosphere, Institute of Soil Sciences,Chinese Academy of Sciences,Nanjing,P. R. China;2.Department of Urban and Resources Sciences,Nanjing University,Nanjing,P. R. China |
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| Abstract: | Soil erosion on sloping field has led to a lot of environmental prob lems. In order to reveal the seriousness of the damage of soil erosion on slopin g fields 137Cs tracer method was used to estimate soil erosion rate. 137Cs refer ence inventory of 2200Bq/m2 in Yixing, southern Jiangsu Province, was estimated and a model for estimating erosion of cultivated soil was established in order t o avoid overestimating soil erosion rates. Then based on the soil erosion rates and measured soil physical and chemical properties, direct and indirect impacts of soil erosion on environment were further discussed. Direct impacts of erosion on environment included on-site and off-site impacts. The on-site impacts we re that soil layer became thin, soil structure was deteriorated and soil nutrien ts decreased. The off-site impacts were that water bodies were polluted. The in direct impacts of soil erosion on environment were the increase of fertilizer ap plication and energy consumption, and change of adaptability of land uses. Altho ugh erosion intensity was not serious in the study area, its environmental impac ts should not be ignored because of great soil nutrient loss and coarseness of s oil particles. |
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| Keywords: | Cs reference inventory erosion model soil erosion equivalent erosion module |
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