基于不同分辨率遥感影像提取的水土保持措施精度分析  

Extracting Features of Soil and Water Conservation Measures from Remote Sensing Images of Different Resolution Levels:Accuracy Analysis

作　　者：赵帮元[1] 马宁[1] 杨娟 李志华[1] 王秦湘[1] 

机构地区：[1]黄河水利委员会黄河上中游管理局,陕西西安710021 [2]黄河设计公司环境与移民院,河南郑州450003

出　　处：《水土保持通报》2012年第4期154-157,共4页Bulletin of Soil and Water Conservation

摘　　要：在韭园沟小流域选择试验样区,采用地理信息系统等技术,基于不同分辨率遥感影像开展了水土保持措施等信息提取和精度分析。结果表明,在黄土丘陵沟壑区第Ⅰ副区,开展梯田、沟台地、疏林地、未成林造林地遥感监测的影像分辨率应优于2.5m,开展坡耕地、坝地、退耕荒草地遥感监测的影像分辨率宜优于2.5m,开展天然草地遥感监测的影像分辨率可选择2.5m,开展林草植被遥感监测的影像分辨率宜优于10m。A number of test areas were selected in Jiuyuangou small valley. Based on different resolution remote sens- ing images, features of soil and water conservation measures were extracted using GIS technology. The results show that in the first subzone of hill-gully zone of Loess Plateau, the image resolution must be higher than 2.5 m to ap- propriately extract the features of terraces, platforms, sparse forests, and undeveloped planting forests; the resolution level should be higher than 2.5 m for accurate extraction of slope farmland, dammed valley, and grassland converted from farmland; the image resolution level can be higher than or equal to 2.5 m for natu- ral grassland. The resolution level should be higher than 10 m for forest-grass vegetation.

关 键 词：水土保持措施 遥感 分辨率 精度 

分 类 号：S157.1[农业科学—土壤学] P231[农业科学—农业基础科学]