Water and Carbon Use Efficiency and Bioclimatic Zone Distribution in Cross-Border Watersheds of Northeast Asia

The transboundary watersheds of Northeast Asia form a connecting unit for ecological and economic activities among China, Russia, North Korea, and Mongolia. In recent years, issues such as water scarcity and fluctuating carbon sink capacity have become increasingly prominent in these basins. This study combines MODIS remote sensing datasets with environmental data to analyze the spatial distribution patterns of water and carbon use efficiency in 2020. The Structure K-means clustering algorithm was employed to delineate bioclimatic zones. The coordinate system for this study's data is WGS_1984_UTM_Zone_52N, with a spatial resolution of 1 km.东北亚跨境流域是联结中国、俄罗斯、朝鲜与蒙古国生态与经济活动的重要纽带。近年来，该流域内水资源短缺、碳汇能力波动等问题日益凸显。本研究结合MODIS遥感数据集（MODIS）与环境数据，对2020年水资源与碳利用效率的空间分布格局展开分析；并采用结构化K-means聚类算法划分生物气候区。本研究的数据坐标系为WGS_1984_UTM_Zone_52N，空间分辨率为1千米。