A Study on Soil Erosion Investigation by Using Remote Sensing and GIS in Zhaotong Prefecture

YUE Cai-rong; TIAN Kun; XU Tian-shu

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A Study on Soil Erosion Investigation by Using Remote Sensing and GIS in Zhaotong Prefecture

- A Study on Soil Erosion Investigation by Using Remote Sensing and GIS in Zhaotong Prefecture
- Bulletin of Soiland Water Conservation Vol. 22, Issue 2, Pages: 36-39(2003)
- 作者机构：
  
  西南林学院,云南,昆明,650224
- 作者简介：
- 基金信息：
- DOI：
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- Published：2003
- 稿件说明：
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YUE Cai-rong, TIAN Kun, XU Tian-shu. A Study on Soil Erosion Investigation by Using Remote Sensing and GIS in Zhaotong Prefecture[J]. Bulletin of Soiland Water Conservation, 2003, 22(2): 36-39.
DOI：

YUE Cai-rong, TIAN Kun, XU Tian-shu. A Study on Soil Erosion Investigation by Using Remote Sensing and GIS in Zhaotong Prefecture[J]. Bulletin of Soiland Water Conservation, 2003, 22(2): 36-39. DOI：

摘要

在分析了昭通地区土壤侵蚀成因和规律后

本研究选择了植被盖度和坡度作为确定土壤侵蚀等级的主导因子。利用1999年昭通地区TM卫星图像进行判读

提取植被盖度、土地类型和土地利用方式等信息;从地形图提取坡度信息;最后应用地理信息系统(GIS)的通用软件工具ARC/INFO7.11和AR-CVIEW3.2进行土壤侵蚀等级的空间分析

得到了土壤侵蚀等级空间分布图。根据土壤侵蚀等级图的统计分析结果对长防林(云南部分)实施后产生的生态效益尤其是土壤侵蚀的治理作出了科学评价。

Abstract

Based on analysis to the causes and laws of soil erosion in Zhaotong prefecture

Yun'nan province

the vegetation coverage percent

land use type and topography slope degree were selected as the key factors for evaluating the degree of soil loss. After fieldwork and analysis to the related materials

the relationship between TM image features and those key factors were established. And the vegetation coverage percent and land use type were extracted from TM accordingly. Combined with the information of slope degree from topography map

the erosion-grading map of Zhaotong prefecture was produced by ARC/INFO 7. 11 and ARCVIEW3. 2 software. Finally

according to the result of statistics from the erosion map

scientific evaluations on the ecological effects were made for the Changjiang river protection forest in Zhaotong prefecture.

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