基于亚米级遥感影像的土壤侵蚀治理成效监测评估——以福建长汀县朱溪小流域为例

发布时间：2018-02-24 09:16

本文关键词： 高分辨率遥感 CSLE 傅里叶变换土壤侵蚀朱溪小流域　出处：《水土保持研究》2017年03期 　论文类型：期刊论文

【摘要】：以福建长汀县朱溪小流域为示范区,选取2011年和2014年两期亚米级高分辨率遥感影像为主要数据源,辅助降雨数据、1∶1万DEM、土壤数据等开展土壤侵蚀治理成效监测评估。通过高分辨遥感影像有效提取了小流域梯田、植被覆盖度、详细土地利用分布等结果,最后利用CSLE模型对朱溪小流域土壤侵蚀变化进行了定量评价。结果表明:朱溪小流域强度到剧烈土壤侵蚀面积从2011年的4.55%减少到2014年的1.93%。其中剧烈侵蚀从占流域面积0.44%减少到2014年的0.15%。2011—2014年3年间强度以上土壤侵蚀明显减少,土壤侵蚀治理措施取得了明显成效。研究认为,亚米级高分辨率遥感影像是土壤侵蚀治理成效监测评估的有效手段。
[Abstract]:Taking the Zhuxi small watershed in Changting County, Fujian Province as the demonstration area, two issues of sub-meter high resolution remote sensing images of 2011 and 2014 were selected as the main data sources. Auxiliary rainfall data, such as 1: 10, 000 DEM, and soil data, were used to monitor and evaluate the effectiveness of soil erosion control. The results of terraces, vegetation coverage, and detailed land use distribution in small watersheds were effectively extracted by high resolution remote sensing images. Finally, CSLE model was used to quantitatively evaluate the changes of soil erosion in Zhuxi small watershed. The results showed that the intensity of Zhuxi small watershed to the area of severe soil erosion decreased from 4.55% in 2011 to 1.933 in 2014. The area of 0.44% was reduced to 0.15 in 2014. Soil erosion above the intensity of the year 2011-2014 decreased significantly, It is considered that the high resolution remote sensing image of sub-meter level is an effective means to monitor and evaluate the effectiveness of soil erosion control.
【作者单位】：福州大学地理空间信息技术国家地方联合工程研究中心空间数据挖掘与信息共享教育部重点实验室;
【基金】：国家科技支撑项目(2013BAC08B01) 福建省科技厅高校产学合作项目(2015H6008)
【分类号】：S157;S127

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