摘要
利用MODIS归一化植被指数(NDVI)资料反演了2006—2015年新疆植被覆盖状况,获取不同时期的植被覆盖度图,并进一步分析了植被覆盖度变化的原因。结果表明:新疆植被覆盖度呈现北部高于南部、西部高于东部的分布特征,其中西部和西北部的山地森林、草地以及天山北坡绿洲农作物、草地区域植被覆盖情况最好。过去10年间,新疆植被覆盖度总体呈上升趋势,2015年植被覆盖度达到最高,为16.68%。生态恢复工程、降水和气温等是影响植被覆盖度变化的主要因素。
The vegetation cover status of Xinjiang in 2006 and 2015 was retrieved by using MODIS normalized vegetation index（ NDVI）,and the vegetation coverage maps were obtained at different periods,and the reasons of vegetation cover changing were analyzed. The results showed that vegetation coverage in northern was higher than that in the south and west than in the east in Xinjiang,and the vegetation coverage in the western and northwest forests and grassland and grassland in the northern slope of the Tianshan mountains was the highest. Over the past 10 years,the total vegetation coverage in Xinjiang was rasing,it was reaching to 16. 68% in 2015. Ecological restoration engineering,precipitation and temperature are the main affect factors of the vegetation coverage changes.
出处
《干旱环境监测》
2017年第3期132-138,共7页
Arid Environmental Monitoring
关键词
遥感
像元二分模型
新疆
植被覆盖度
监测
remote sensing
pixel binary model
Xinjiang
vegetation coverage
monitoring
