归一化植被指数与主要气候因子耦合关系研究

以我国归一化植被指数时间序列数据集和历年各气象台站气温和降水量等气候因子数据为基础,分析我国归一化植被指数、气温和降水量的时序变化特征,同时通过研究讨论我国归一化植被指数与气候因子之间的耦合关系.研究表明:MODIS-NDVI、气温、降水量三个因子的平均变化趋势相近,均表现出周期性.并且,MODISNDVI与气候因子具有正相关关系,气温影响降水量,而气温和降水量共同影响MODIS-NDVI,即影响植被长势和生物量的变化.

Coupling Relationship Between MODIS-NDVI and Climatic Factor

Based on the MODIS-NDVI time series data sets and annual climatic factors such as temperature and precipitation data from 663 national I and II meteorological stations, we analysed the time series variation of MODIS- NDVI, temperature and precipitation, and made further studies on the coupling relationship between MODIS-NDVI and climatic factors. Research shows that the average change of MODIS-NDVI, temperature, precipitation and a factor of three similar, exhibit periodic. And, MODIS-NDVI and climate factors have positive correlation, the effect of temperature and precipitation, temperature and precipitation of MODIS-NDVI, namely, changes in vegetation growth and biomass.