摘要
草地资源是一种重要的自然资源。研究利用Landsat8作为影像数据源,以新疆天山北坡作为研究区域,以野外实测的各种类草地的光谱信息,计算各类草地样本的NDVI值,从而定量地分析、确定草地资源在NDVI指数内的阈值范围。采用密度分割的方法对草地资源信息进行提取研究,Kappa系数达到了89.60%,结果较为满意。
Grassland resource is an important natural resource. By using Landsat8 as the image data source and taking the northern slope of the Tianshan Mountains in Xinjiang as the research area, the NDVI values of various grassland samples were calculated through the spectral information of various grasses, and the threshold range of the grassland resource in NDVI index were quantitatively analyzed and determined. The method of density segmentation was used to extract grassland resource information and the Kappa coefficient was 89.60%and the results were satisfactory.
出处
《价值工程》
2017年第22期232-234,共3页
Value Engineering
关键词
植被指数
光谱
草地资源
vegetation index
spectral
grassland resources
