Abstract: The ecological environment sustainable is closely related to human well-being and ecosystem services. It is important for making protection strategy of sustainable eco-environment and foreseeing climate factors impact on the ecosystem to study the spatial-temporal change of vegetation coverage and its relationship with climatic factors,to explore the driving mechanism of climate factor on the vegetation change. Based on these,the paper used the MODIS NDVI released by NASA and related climate data to study the relationship between NDVI and climatic factors in North Korea during 2000-2016 by using method of MVC(maximum value composites), Kriging method,correlation analysis method,and so on. The results show as follows:(1)The spatial distribution of vegetation coverage in North Korea was unbalanced,the high value of NDVI was located in Gaema plateau of northern,Hamgyong mountains of northeast,mountain and hill of Central and Eastern,while the low value of NDVI was located in the western/southern plains and the eastern coastal areas. NDVI overall increased and some local NDVI reduced,the spatial difference of NDVI was obvious.(2)The growth of vegetation was driven by temperature and precipitation,and the effect of temperature on the interannual variability of vegetation growth was even more important than that of precipitation. In factors of the temperature,the mean temperature had a great influence on the growth of vegetation,and the response of NDVI to the precipitation was obviously backward;the response of NDVI to temperature and precipitation was related to spatial location and elevation. Interannual variability of regional vegetation NDVI was influenced mainly by annual minimum temperature and human activity. In the future,more attention should be paid to the spatial-temporal changes of different vegetation types and their relationships with climatic factors,topography,soil,and human activities. At the meantime,the key ecosystem services need to be quantified in order to realize the coordinated development of ecosystems and human well-being.

Key words: North Korea, MODIS NDVI, change of vegetation, climate factors