| 黄土高原沟壑区土壤侵蚀评价指标体系——以中国王东沟流域为例 |
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| 作者姓名： | NI Shao-Xiang MA Guo-Bin WEI Yu-Chun JIANG Hai-Fu |
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| 作者单位： | College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com;College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com;College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com;College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com |
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| 基金项目： | *1Project supported by the State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, China (No.10501-88) and the National High Technology Research and Development Program of China (863 Program) (No.2001AA245041). |
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| 摘 要： | The Wangdonggou Watershed on the Loess Plateau in China was selected as the study area to develop a model for soil erosion assessments. Using the data collected at 20 sampling sites all tentatively selected indicators were assessed against their corresponding erosion intensity through a correlation analysis. Eight highly correlated indicators were then chosen for the soil erosion assessment. In addition, threshold limits to delineate the class size for these indicators and weights to rank them were determined. Next, a grading model incorporating the selected indicators class rating and their associated weights was developed and verified by an on site evaluation of the soil erosion intensity in the study area. Results of the verification showed that the overall accuracy of the indicator system for assessing soil erosion in the Loess Plateau gully regions could reach 85%.
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| 关 键 词： | 铜 锌 重金属 土壤成分 堆积物 土壤污染 |
An indicator system for assessing soil erosion in the Loess Plateau gully regions: A case study in the Wangdonggou Watershed, China |
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| NI Shao-Xiang,MA Guo-Bin,WEI Yu-Chun,JIANG Hai-Fu.An indicator system for assessing soil erosion in the Loess Plateau gully regions: A case study in the Wangdonggou Watershed, China[J].Pedosphere,2004,14(1):37-44. |
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| Authors: | NI Shao-Xiang MA Guo-Bin WEI Yu-Chun and JIANG Hai-Fu |
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| Institution: | College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com;College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com;College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com;College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com |
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| Abstract: | The Wangdonggou Watershed on the Loess Plateau in China was selected as the study area to develop a model for soil erosion assessments. Using the data collected at 20 sampling sites all tentatively selected indicators were assessed against their corresponding erosion intensity through a correlation analysis. Eight highly correlated indicators were then chosen for the soil erosion assessment. In addition, threshold limits to delineate the class size for these indicators and weights to rank them were determined. Next, a grading model incorporating the selected indicators class rating and their associated weights was developed and verified by an on site evaluation of the soil erosion intensity in the study area. Results of the verification showed that the overall accuracy of the indicator system for assessing soil erosion in the Loess Plateau gully regions could reach 85%. |
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| Keywords: | assessment indicator Loess Plateau soil erosion watershed |
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