Application of MODIS Data on Soil Erosion Dynamic Monitoring in Hubei Province

HUANG Yan-yan; ZENG Zhi-yuan; CHEN Shao-hui

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Application of MODIS Data on Soil Erosion Dynamic Monitoring in Hubei Province

- Application of MODIS Data on Soil Erosion Dynamic Monitoring in Hubei Province
- Bulletin of Soiland Water Conservation Vol. 26, Issue 5, Pages: 92-95(2007)
- 作者机构：
  
  华中科技大学水电与数字化工程学院数字流域科学与技术湖北省重点实验室,湖北,武汉,430074
- 作者简介：
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- Published：2007
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HUANG Yan-yan, ZENG Zhi-yuan, CHEN Shao-hui. Application of MODIS Data on Soil Erosion Dynamic Monitoring in Hubei Province[J]. Bulletin of Soiland Water Conservation, 2007, 26(5): 92-95.
DOI：

HUANG Yan-yan, ZENG Zhi-yuan, CHEN Shao-hui. Application of MODIS Data on Soil Erosion Dynamic Monitoring in Hubei Province[J]. Bulletin of Soiland Water Conservation, 2007, 26(5): 92-95. DOI：

摘要

以动态监测湖北省土壤侵蚀为例

采用三要素(即植被覆盖度、地形坡度和土地利用)专家规则模型

应用MODIS遥感影像进行土壤侵蚀强度快速估测。首先

利用MODIS数据和植被指数模型提取省内的植被覆盖度信息; 其次

利用人工解译的TM影像获取土地利用图;然后

利用DEM数据生成坡度图;最后

结合土壤侵蚀强度分级指标

将这3图叠加

判断和计算侵蚀强度等级

获得省内土壤侵蚀强度等级图。运用GIS技术

通过对2004年和2005年的土壤侵蚀强度等级图分析比较

从而实现动态监测。

Abstract

To dynamically monitor soil and water conservation in H ubei Province

the three factors of vegeta-tion

slope

and landuse are incorporated in the fast estimation of soil erosion using MODIS images and other investigated information. First

a vegetation coverage map is extracted from MODIS images. Second

a land-use distribution map is obtained from TM images. Third

a slope map is created from DEM. Finally

based on the standards of soil erosion grading

a soil erosion distribution map is obtained by overlaying the maps of landuse distribution

vegetation coverage

and slope. Based on geographic information system(GIS)

the de-gree and distribution of soil erosion in Hubei Province are quantitatively analyzed using MODIS images in 2004 and 2005 and the change of soil erosion from 2004 to 2005 is analyzed.

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