南方红壤区林下水土流失的遥感判别——以福建省长汀县为例

发布时间：2018-02-25 01:13

  本文关键词： 林下水土流失 规则判别 遥感 植被覆盖度 植被健康状况　出处：《地理科学》2017年08期 　论文类型：期刊论文

【摘要】：针对林下水土流失缺乏有效判别方法的问题,提出了一种遥感判别方法。该方法以植被覆盖度、植被健康度、土壤裸露度和坡度为判别因子,采用规则法来建立林下水土流失遥感判别模型,并将其应用于福建省长汀县。结果发现,长汀县有311.66 km~2的林地发生不同程度的林下水土流失,其中有13.35%的土壤侵蚀强度达到中度。通过遥感方法识别出的林下水土流失区的空间分布位置可为该县今后深入治理水土流失提供目标靶区。
[Abstract]:In view of the lack of effective discriminant method for soil and water loss under stands, a remote sensing method is proposed, which takes vegetation coverage, vegetation health, soil nudity and slope as discriminant factors. A remote sensing discriminant model of soil and water loss under forest was established by rule method and applied to Changting County, Fujian Province. The results showed that there were 311.66 km~2 of forest land in Changting County. Among them, 13.35% of the soil erosion intensity is moderate, and the spatial distribution of soil erosion area under forest can be identified by remote sensing method, which can provide a target area for the further control of soil and water loss in this county in the future.
【作者单位】： 福州大学环境与资源学院/遥感信息工程研究所;空间数据挖掘与信息共享教育部重点实验室/福建省水土流失遥感监测评估重点实验室;澳大利亚弗林德斯大学环境学院;福建省水土保持监测站;
【基金】：国家科技支撑项目(2013BAC08B01-05) 福建省教育厅重点项目(JA13030)资助~~
【分类号】：S714.7;TP79
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