Spatial patterns of net primary productivity and its driving forces:a multi-scale analysis in the transnational area of the Tumen River

作     者：Jianwen WANG Da ZHANG Ying NAN Zhifeng LIU Dekang QI Jianwen WANG;Da ZHANG;Ying NAN;Zhifeng LIU;Dekang QI

作者机构：Department of GeographyYanbian UniversityYanji 133002China Center for Human-Environment System Sustainability(CHESS)State Key Laboratory of Earth Surface Processes and Resource Ecology(ESPRE)Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China School of Natural ResourcesFaculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China 

出 版 物：《Frontiers of Earth Science》 (地球科学前沿（英文版）)

年 卷 期：2020年第14卷第1期

页      面：124-139页

核心收录：

学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：supported by in part by the National Natural Science Foundation of China 

主　　题：transnational area of the Tumen River NPP spatial pattern driving force multiple scale 

摘      要：Analyzing the spatial patterns of net primary productivity(NPP)and its driving forces in transnational areas provides a solid basis for understanding regional ecological processes and ecosystem ***,the spatial patterns of NPP and its driving forces have been poorly understood on multiple scales in transnational *** this study,the spatial patterns of NPP in the transnational area of the Tumen River(TATR)in 2016 were simulated using the Carnegie Ames Stanford Approach(CASA)model,and its driving forces were analyzed using a stepwise multiple linear regression *** found that the total amount of NPP in the TATR in 2016 was approximately 14.53 *** amount of NPP on the Chinese side(6.23 TgC)was larger than those on the other two sides,accounting for 42.88%of the total volume of the entire *** different land-use and land-cover(LULC)types,the amount of NPP of the broadleaf forest was the largest(11.22 TgC),while the amount of NPP of the bare land was the *** NPP per unit area was about 603.21 gC/(m2 yr)across the entire region,while the NPP per unit area on the Chinese side was the largest,followed by the Russian side and the DPRK s *** spatial patterns of NPP were influenced by climate,topography,soil texture,and human *** addition,the driving forces of the spatial patterns of NPP in the TATR had an obvious scaling effect,which was mainly caused by the spatial heterogeneity of climate,topography,soil texture,and human *** suggest that effective land management policies with cooperation among China,the DPRK,and Russia are needed to maintain NPP and improve environmental sustainability in the TATR.