THE RESPONSE OF TERRESTRIAL ECOSYSTEM IN EASTERN ASIA REGION TO CLIMATE CHANGE

Net primary productivity (NPP) is an important indicator to the response of vegetation to climate change. Based on CASA-NPP ecosystem model driven by remote sensed data, air temperature, precipitation and solar radiation data, this paper estimated NPP for the terrestrial ecosystem in East Asia region (70 degrees E-170 degrees E, 10 degrees N-70 degrees N) and incorporated with atmospheric circulation factors to study the response of annual NPP to climate change during 1982-1999. The response signal of annual NPP to temperature is strong and the leading four NPP-temperature paired modes explain 93.58% of the NPP-temperature covariance. The area with interpretation ratio of the nine atmospheric circulation factors to NPP deviation over 50% accounts for 72.17% of the study area.