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基于GIS的小流域土壤侵蚀评价研究(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2002年04期
Page:
43-46
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Evaluation of Soil Erosion Based on GIS in a Small Watershed
Article ID:
1000-2006(2002)04-0043-04
Author(s):
XU Tian shu 1PENG Shi kui 1YUE Cai rong 2
1.Nanjing Forestry University,Nanjing 210037,China;2.Southwest Forestry College,Kunming 650224,China
Keywords:
Soil erosionUniversal siol loss equationGISSmall watershedPearl River
Classification number :
S757
DOI:
10.3969/j.jssn.1000-2006.2002.04.011
Document Code:
A
Abstract:
Based on the platform of Arcview 3.2,ARC/INFO 7.11 and Visual Foxpro 6.0,Soil erosion in the watershed of Jiuxihe in the up reach of Pearl River was evaluated by using universal soil loss equation(USLE).The factors related to soil erosion were inputted to Arcview in vector,which included topography,landuse,vegetation type,soil type,and converted to grid.Then cell based soil loss was calculated by using USLE based on map algebra.The result showed that:(1)In different landuse types,soil loss on wasteland was eight times that on the woodland.(2)Soil loss in economic forest was the biggest in different vegetation types.(3)Slope was the most important factor related to soil erosion,and soil loss on the land where slope was over 25,was fifty four times that on the flat.Afterward,the key factors and solution dealing with soil erosion harness were found out,which were slope and woodland.

References

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Last Update: 1900-01-01