基于遥感的广东省陆河县水土流失敏感性分析

Sensitivity Analysis on Soil Erosion in Luhe County of Guangdong Province Based on Remote Sensing Technology

遥感技术具有监测范围广、更新周期短、光谱信息丰富等特点,在水土流失敏感性评价中具有显著优势。本文以landsat-8 OLI影像为主要数据源,通过构建水土流失敏感指数对陆河县水土流失敏感性空间分布规律进行研究。结果表明:基于遥感技术可以对研究区水土流失敏感性进行有效识别。陆河县水土流失敏感性以轻度和中度敏感为主,其面积占90%以上。轻度敏感区主要分布在较偏远的山地、丘陵地区,中度敏感区多分布于山地丘陵向平原河谷过渡地区。研究成果可为陆河县水土流失防治和生态环境保护提供科学依据。

Remote sensing technology enjoys the characteristics of wider monitoring range,shorter updating cycle,richer spectral information,etc.With the significant advantages in the evaluation of soil erosion sensitivity.Through the construction of soil erosion sensitive indexes,it was studied the spatial distribution rules of soil erosion sensitivity in Luhe County was studied by taking the landsat-8 OLI image as the main data source.The results show that,soil erosion sensitivity in study area can be effectively identified by remote sensing technology.More than 90%of the eroded areas in Luhe County are slightly sensitive or moderate sensitive.The slightly sensitive areas are mainly distributed in remote mountainous and hilly areas,while the moderate sensitive areas are mainly distributed in the transition area from mountains and hills to plain and valley.The study results can provide a scientific basis for the prevention and control of soil erosion,as well as the ecological environment protection in Luhe County.