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| Preliminary study of spatial scale effects of soil erosionin Liaoning Province |
| Zhong Xiaolei<sup>1</sup>,Guo Chengjiu<sup>1</sup>,Fan Haoming<sup>1</sup>,Zhou Lili<sup>1</sup>,Wu Min<sup>1</sup>,Cao Lianmei<sup>2</sup> |
| 1.College of Water Resoure,Shenyang Agricultural University,110161,Shenyang;2.Water Resource Department of Xinbin,113200,Fushun,Liaoning: China |
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Abstract In the field of soil erosion research,one focused issue is on the analysis and investigation to the effect of soil erosion dimensional scale and the evaluation of soil erosion amount in different dimensional scale.The research is based on the general analysis of the long serial data of 34 typical hydrological stations and remote sensing data in 2000 of Liaoning Province.And a primary discussion is presented by the comparative research of different amount of soil erosion in small valley and meso-scale valley and the large-scale area.Through the balance calculation methods to calculate the amount of soil erosion,the result is indicated as: in Liaoning Province,along with the increasing of research area,firstly,through the study of Liaohe valley,average amount of soil loss will be diminished;secondly,through the study of nine meso-scale valley in Liaoning Province,macro-scopical features of soil erosion become more obvious.Based on the analysis of the sediment balance,the change of sediment deposit is one of the important factors for scale effect.It is very important for improving the work of monitoring to study of the theory and calculation methods for the sediment balance.
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Received: 20 June 2007
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