西北林学院学报2018，Vol.33Issue(3)：226-231,6.DOI:10.3969/j.issn.1001-7461.2018.03.35
景电灌区植被覆盖遥感动态监测
Dynamically Monitoring Vegetation by Remote Sensing in Jingtai Irrigation area
摘要
Abstract
Vegetation coverage is an important ecological and environmental parameter for the evaluation of ecological environment.By interpreting the TM images in 1987,2001 and 2015,the vibrations of vegetation coverage in Jingtai irrigation area was studied based on binary pixel model of remote sensing.The results showed that 1) due to the climatic conditions,the ratio of extremely low and low coverage in the area was more than 60％,indicating that the vegetation coverage was very low.2)From 1987 to 2015,due to the implentmentation of Jingtai Electric Power Irrigation Project and national ecological construction project,the ratio of low vegetation cover decreased rapidly,from 62.20％ in 1987 to 30.86％ in 2015,with an annual decrease of 1.19％.The proportion of irrigated farmland increased from 16.93％ in 1987 to 35.91％ in 2015,with an average annual rate of change of 0.68％.关键词
归一化植被指数/像元二分模型/植被覆盖度/景电灌区Key words
normalized vegetation index/binary pixel model/vegetation coverage/Jingtai electrical irrigation area分类
农业科技引用本文复制引用
陈芳,魏怀东,周兰萍,李亚..景电灌区植被覆盖遥感动态监测[J].西北林学院学报,2018,33(3):226-231,6.基金项目
国家自然科学基金(31360204,51579102) （31360204,51579102）
甘肃省自然基金计划(17JR5RA062). （17JR5RA062）
