摘要
利用1998年12月-2008年11月西藏怒江流域每旬最大化NDVI数据集(S10)产品,研究了10年内流域NDVI的时空变化,发现研究区植被情况总体比较好且在研究时段内变化不大。结合流域内9个气象站点1998年12月-2008年11月的月平均气温、降水量、日照时数资料,研究了流域各类型NDVI与气候因子的关系,发现4月的气温可能以积温的形式影响牧草返青,而5、6、7月的气温影响牧草生长,这对草地放牧有一定的指导意义。
The spatial and temporal variation of NDVI in the watershed of Nujiang River in Tibetan Autonomous Region was studied by using each ten day period maximization NDVI data set（S10） product from December 1998 to November 2008.The result indicated that vegetation was good and little change occurred.With the data of monthly mean temperature,precipitation and sunshine from December 1998 to November 2008 at 9 meteorological stations in this region,the relation between NDVI and the climate factors was studied and it was found that the temperature in April might influence the re-greening in terms of accumulated temperature,and the temperature in May,June and July affected the grass growth.
出处
《草业科学》
CAS
CSCD
北大核心
2010年第8期52-58,共7页
Pratacultural Science
基金
国家自然科学基金项目(40865008)
关键词
NDVI
草地
气候因子
怒江流域
NDVI
temperature
precipitation
sunshine
Nujiang River watershed
