沙漠与绿洲气象2011，Vol.5Issue(6)：54-58,5.
乌鲁木齐地区生长季NDVI序列影像的植被覆盖变化分析
An Analysis of the Vegetation Coverage in the Growing Season of Urumqi Reflected from NDVI Serial Image
摘要
Abstract
By use of satellite data （MODIS） and meteorological data from Pasture Monitoring Station in Urumqi, the NDVI （normalized difference vegetation index） sequence of every 10 days in the growing seasons of 2007 and 2010 in Urumqi was calculated by the method of the maximum synthesis. NDVI variation characteristics and its relationship with meteorological factors were also analyzed. The results showed that： temperature and precipitation are the main driving factors for NDVI change, but hysteresis exists for the response of vegetation to climate factors. The maximum NDVI values of 10 days change during range of 0.46 to 0.83 in Urumqi area. Compared with contemporanceous data in 2007 when the vegetation growth was the best in the past 10 years , the growth period in 2010 was 10-15 days later and vegetation index reach 0.7 till 40 days later because of lower temperature in spring of 2010. As high temperature and less precipitation,vegetation index appeared drop inflexion point in the mid of July, and the grass went into the period of maturity, wilting or stopping growth,which is 40 days earlier than that in 2007. These conclusions matched the measuring results of the pasture monitoring station in the middle belt of Nanshan Hill in Urumqi area.关键词
NDVI（归一化植被指数）/MODIS/覆盖度/乌鲁木齐地区Key words
NDVI/MODIS/coverage/Urumqi分类
天文与地球科学引用本文复制引用
熊玲,殷克勤,吴麟,黄慰军..乌鲁木齐地区生长季NDVI序列影像的植被覆盖变化分析[J].沙漠与绿洲气象,2011,5(6):54-58,5.基金项目
气象关键技术集成与应用 （）
中国沙漠气象研究基金（sqj2007007）. （）
