Pedosphere 14(1): 37--44, 2004
ISSN 1002-0160/CN 32-1315/P
©2004 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| An indicator system for assessing soil erosion in the Loess Plateau gully regions: A case study in the Wangdonggou Watershed, China |
NI Shao-Xiang , MA Guo-Bin, WEI Yu-Chun and JIANG Hai-Fu |
| College of Geographical Science, Nanjing Normal University, Nanjing 210097 (China). E-mail: sxni@jlonline.com |
| 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%. |
| Key Words: assessment, indicator, Loess Plateau, soil erosion, watershed |
| Citation: Ni, S. X., Ma, G. B., Wei, Y. C. and Jiang, H. F. 2004. An indicator system for assessing soil erosion in the Loess Plateau gully regions: A case study in the Wangdonggou Watershed, China. Pedosphere. 14(1): 37-44. |
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