森林与环境学报2018，Vol.38Issue(2)：164-170,7.DOI:10.13324/j.cnki.jfcf.2018.02.006
植被覆盖度提取及景观格局分析
Extraction of vegetation coverage and analysis of landscape pattern
摘要
Abstract
Taking Shaxian County,Sanming City,Fujian Province as an example,vegetation coverage was extraction through four-endmember model builted by original Landsat image and five-endmember linear spectral mixture model built by Landsat image merged with the normalized different vegetation index. After comparing the accuracy of four-endmember and five-endmember, this study used the five-endmember which has higher precision to estimate the vegetation coverage of Shaxian in 1996, 2004, 2014, respectively. This paper analyzed the changes of vegetation coverage and its landscape pattern. The results showed that the vegetation coverage structure of Shaxian mainly was high vegetation coverage which accounted for more than 57.87% in the county area. The worst vegetation coverage was in 1996. In 1996—2004,vegetation coverage significantly increased in a rate of 35.15%. From 2004 to 2014, the vegetation coverage significantly decreased due to urban development in a rate of 8.99%, mainly in the middle and north of Shaxian. From the landscape pattern of the vegetation coverage,the degree of fragmentation of very low,low and high vege-tation coverage were low showing a concentrative distribution. The degree of fragmentation of very low and low vegetation coverage decreased first and then increased during 1996 to 2014,which was closely related to human activities.关键词
植被覆盖度/归一化植被指数/端元/线性光谱混合模型/景观格局Key words
vegetation coverage/normalized difference vegetation index/endmember/linear spectral mixture model/landscape pattern分类
农业科技引用本文复制引用
苏艳琴,赖日文,闫琦,余莉莉,李红霖,赖炽敏..植被覆盖度提取及景观格局分析[J].森林与环境学报,2018,38(2):164-170,7.基金项目
国家自然科学基金项目(31770760) （31770760）
福建省自然科学基金(2015J01623) （2015J01623）
生态林种科研基地建设工程项目(61201400814). （61201400814）
