High accuracy simulation of aboveground biomass in Northern China based on IOCSG RELATIONSHIP BETWEEN KIRA′S INDEXES AND DISTRIBUTION OF DOMINANTS AND COMPANIONS OF SUBTROPICAL EVERGREEN BROADLEAVED FOREST IN CHINA Key problems in ecological research on vegetations in Northeast China The Relation between the Zonal Distribution of Types of Vegetation and the Climate in Northeast China Spatiotemporal variations of vegetation cover in Zhejiang Province and their relations to eco-climatic indices. Net primary productivity in grassland ecosystem in Inner Mongolia and its relationship with climate Development of Kira‘s indices and its application to vegetation climate interaction study of China