抚仙湖流域土壤侵蚀遥感监测

发布时间：2018-06-12 02:33

本文选题：土壤侵蚀 + 遥感监测　；参考：《水土保持研究》2016年03期

【摘要】：为了有效保护抚仙湖流域生态环境安全,推进其可持续发展,对抚仙湖流域土壤侵蚀情况进行遥感监测研究。采用"3S"技术与野外实地调查相结合的方法,以云南省第一次全国地理国情普查成果为基础,基于通用水土流失方程(USLE)模型,估算抚仙湖流域1974—2014年的水土流失量,并探讨流域土壤侵蚀强度的时空分布及变化规律。研究发现:(1)抚仙湖流域土壤侵蚀强度在很大程度上受降雨量的影响;(2)土壤侵蚀量总体呈现出波动上升下降再上升的趋势。不同强度土壤侵蚀量的变化表明其水土流失经历了先加剧后缓解的变化过程,流域部分敏感区土壤侵蚀程度不断加剧;(3)流域水土流失的空间分布具有一致性,水土流失最严重的区域基本分布在抚仙湖的东西两岸以及南岸的部分区域。
[Abstract]:In order to effectively protect the ecological environment security and promote the sustainable development of Fuxian Lake basin, remote sensing monitoring of soil erosion in Fuxian Lake basin was carried out. Using the method of "3s" technology combined with field investigation, based on the results of the first national survey of geographical conditions in Yunnan Province, and based on the general soil erosion equation (USLEE) model, the soil and water loss in Fuxian Lake basin from 1974 to 2014 was estimated. The temporal and spatial distribution and variation of soil erosion intensity in the watershed are also discussed. It is found that the soil erosion intensity in Fuxian Lake basin is affected by rainfall to a great extent. The change of soil erosion amount of different intensity indicates that the soil and water loss has experienced the process of first intensifying and then mitigating, and the spatial distribution of soil erosion is consistent in some sensitive areas of the basin. The most serious areas of soil and water loss are located on the east and west banks of Fuxian Lake and parts of the south bank.
【作者单位】：云南师范大学旅游与地理科学学院;云南省基础地理信息中心;
【基金】：国家测绘地理信息局地理国情监测示范项目“抚仙湖流域生态环境动态监测”(测国土函[2014]35号) 国家自然科学基金项目(41561048) 云南省中青年学术技术带头人培养项目(2008PY056)
【分类号】：S157.1;S127

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