摘要
利用 1 982～ 1 992年时间序列的 NOAA/ AVHRR8km× 8km分辨率的归一化植被指数 ( Normalized difference veg-etation index,NDVI) ,将东经 1 2 0°～ 1 35°、北纬 4 0°～ 55°区域的土地覆盖类型分为 1 0类。然后研究了各类型的 NDVI年平均值的变化规律。结合该地区的 1 9个气象站 1 982～ 1 992年的年平均气温、年最高温度、年最低温度、年降水量和年相对湿度研究了各类型 NDVI年平均值的变化与气候因子之间的关系 ,进一步阐明了气候因子是 NDVI动态变化的主要原因。
The vegetation between longtitude 120° and 135°E,latitude 40° and 55°E was classfied into 10 types by the data of NOAA/AVHRR Normalized Difference Vegetation Index(NDVI)with spatial resolution of 8km×8km from 1982 to 1992.The annual change of average value of NDVI of the types was studied.With the annual average temperature,annual highest temperature,annual lowest temperature,annual precipitation and annual relative humidity from 1982 to 1992 at 19 stations in this zone,the relation between the change of NDVI and the climatic factors was studied,and it was found that the climatic factors are the main cause of the dynamic change of NDVI.
出处
《生态学报》
CAS
CSCD
北大核心
2001年第4期522-527,共6页
Acta Ecologica Sinica
基金
国家自然科学重大基金! (编号 :39899370 )
黑龙江省杰出青年基金
霍英东青年教师基金
