应用遥感技术研究土地利用P土地覆盖变化及其对土壤侵蚀过程的影响*) ) ) 以印度北部Pali Gad 山地流域为例

摘要/Abstract

摘要：

应用遥感技术评估了印度北部Pali Gad 山地流域过去几十年里土地利用P土地覆盖变化及其造成的土
壤侵蚀程度, 并基于摩根参数模型( Morgan Parametric Model) 的方法来测定土壤的侵蚀程度; 结果表明,
由于不同的坡向受到太阳光照的不同可以引起土地覆盖的变迁; 海拔和坡度已不再是阻碍人们获取自然资
源的因素, 人们的活动范围正转移到更高的海拔和更陡峭的坡度; 揭示了土地利用P土地覆盖变化对土壤
侵蚀进程有着直接的影响。

关键词: 遥感, 地理信息系统, 喜马拉雅西部, 土地利用P土地覆盖变化, 土壤侵蚀

Abstract:

Mountain ecosystems cover about 24% of the earth. s surface, which provides vital environmental goods and
services. Twelve per cent ( or about 720 million) of the global human population live in mountains. Thewestern Himalaya
is one of the most populated areas in the world. The long history of human activities has significantly contributed to land
use and land cover changes ( LUCC) , which further impacts on soil erosion and decreasing of land productivity. This paper
allied remote sensing for assessing the LUCC and its impact on the soil erosion processes for past two decades in Pali
Gad watershed, northern regions. A processed basedMorgan Parametric Model has been used to determine the rate of erosion.
The results show that the LUCC dynamics much depend on the aspect. The altitude and slope is no more a constraint
for access to nature resources. The human activities have shifted towards higher altitudes and steeper slopes, which eventually
causes soil erosion in the mountain regions.

Key words: Geographic information system, Himalaya, Land use and land cover change, Remote sensing, Soil erosion

中图分类号:

Q 948

李巧宏1, 许建初1**, P1K. JOSHI2, Nikhil LELE2. 应用遥感技术研究土地利用P土地覆盖变化及其对土壤侵蚀过程的影响*) ) ) 以印度北部Pali Gad 山地流域为例[J]. Plant Diversity, 2006, 28(2): 175-182.

LI Qiao-Hong-, Xiu-Jian-Chu-**, PK. JOSHI, Nikhil LELE. Applying Remote Sensing to Assessing Land Use and Land Cover Change, and Its Impact on Soil Erosion: Case of Pali Gad Watershed, Northern India[J]. Plant Diversity, 2006, 28(2): 175-182.

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