| Monitoring on soil erosion and sediment delivery at a typical basin of the middle and lower reaches of the Jialing River by remote sensing |
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| 引用本文： | FAN Jianrong,ZHONG Xianghao & LIU Shuzhen Institute of Mountain Hazards and Environment,Chinese Academy of Sciences and Ministry of Water Resources,Chengdu 610041,China. Monitoring on soil erosion and sediment delivery at a typical basin of the middle and lower reaches of the Jialing River by remote sensing[J]. 中国科学E辑(英文版), 2003, 46(Z1) |
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| 作者姓名： | FAN Jianrong ZHONG Xianghao & LIU Shuzhen Institute of Mountain Hazards and Environment Chinese Academy of Sciences and Ministry of Water Resources Chengdu 610041 China |
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| 作者单位： | FAN Jianrong，ZHONG Xianghao & LIU Shuzhen Institute of Mountain Hazards and Environment，Chinese Academy of Sciences and Ministry of Water Resources，Chengdu 610041，China |
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| 基金项目： | 中国科学院知识创新工程项目 |
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| 摘 要： | The monitoring work was performed on soil erosion in Lizixi drainage arearespectively in 1986 and 1999 by multiple methods with the information extracted from theLandsat TM imagery and Spot imagery. The variation of erosion quantity in this area iscalculated based on the monitoring result of the erosion intensity and area in these twoyears. The change of sediment delivery is also analyzed. The research result shows thatcompared to 1986, in 1999, the erosion area reduced, especially for the area of moderateintensity and above, and the intensity and quantity of erosion decreased. Compared tothis period from 1965 to 1986, the sediment delivery ratio has been changed from 0.27 to0.11 after 1986. The research result could help the decision-making for further water andsoil conversation work in Lizixi drainage area, and it also offers reference for monitoring, evaluating and predicting soil erosion in other drainage areas.
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Monitoring on soil erosion and sediment delivery at a typical basin of the middle and lower reaches of the Jialing River by remote sensing |
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| FAN Jianrong,ZHONG Xianghao,LIU Shuzhen. Monitoring on soil erosion and sediment delivery at a typical basin of the middle and lower reaches of the Jialing River by remote sensing[J]. Science in China(Technological Sciences), 2003, 46(Z1) |
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| Authors: | FAN Jianrong ZHONG Xianghao LIU Shuzhen |
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| Abstract: | The monitoring work was performed on soil erosion in Lizixi drainage area respectively in 1986 and 1999 by multiple methods with the information extracted from the Landsat TM imagery and Spot imagery. The variation of erosion quantity in this area is calculated based on the monitoring result of the erosion intensity and area in these two years. The change of sediment delivery is also analyzed. The research result shows that compared to 1986, in 1999, the erosion area reduced, especially for the area of moderate intensity and above, and the intensity and quantity of erosion decreased. Compared to this period from 1965 to 1986, the sediment delivery ratio has been changed from 0.27 to 0.11 after 1986. The research result could help the decision-making for further water and soil conversation work in Lizixi drainage area, and it also offers reference for monitoring, evaluating and predicting soil erosion in other drainage areas. |
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| Keywords: | drainage area soil erosion remote sensing sediment delivery. |
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