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| Affection of different methods to the soil erosion monitoring results: A case study in Lianshui River Basin of Jiangxi Province |
| Liang Yin,Tian Gang,Pan Xianzhang,Shi Deming,Yang Xuan |
| Institute of Soil Science,Chinese Academy of Sciences,210008,Nanjing,China |
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Abstract This paper mainly analyses how the methods affects the soil erosion monitoring results.Three monitoring methods are used in the research: the simulation using RUSLE model,the estimation from visual interpretation soil erosion map and field observation at the outlet of the Lianshui River Basin in 2000.The results show that the amount of soil erosion by the method of visual interpretation is the biggest,which is about 6.2 times of the observation value and 1.9 times of the result from the RUSLE model.The research also reveals that the scale of the DEM also affects the simulation results when using RUSLE model,and that the difference between the results of two DEM data with different scale is main caused by the variation of total area of slight erosion and none erosion grade.The article also gives some advices on how to realize soil erosion monitoring at the regional scale.
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Received: 02 March 2008
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