我国冻土生态系统碳氮磷循环过程、机制及演化趋势研究进展  

Research Progress about Processes,Mechanisms and Trajectories of Carbon,Nitrogen and Phosphorus Cycling in China's Permafrost Ecosystems

作　　者：杨元合[1,2,3] 张典业 白宇轩 王媛媛 朱彪 效存德 徐希燕 YANG Yuanhe;ZHANG Dianye;BAI Yuxuan;WANG Yuanyuan;ZHU Biao;XIAO Cunde;XU Xiyan(State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093;China National Botanical Garden,Beijing 100093;College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 101408;Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes,College of Urban and Environmental Sciences,Peking University,Beijing 100871;Faculty of Geographical Science,State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875;Key Laboratory of Regional Climate-Environment for Temperate East Asia,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029)

机构地区：[1]中国科学院植物研究所,植被与环境变化国家重点实验室,北京100093 [2]国家植物园,北京100093 [3]中国科学院大学资源与环境学院,北京101408 [4]北京大学城市与环境学院,生态研究中心,地表过程分析与模拟教育部重点实验室,北京100871 [5]北京师范大学地理科学学部,地表过程与资源生态国家重点实验室,北京100875 [6]中国科学院大气物理研究所,东亚区域气候-环境重点实验室,北京100029

出　　处：《中国基础科学》2024年第5期53-59,共7页China Basic Science

基　　金：国家重点研发计划项目(2022YFF0801900)。

摘　　要：准确揭示多年冻土区碳源汇特征及其演化趋势对降低我国陆地生态系统碳源汇评估中的不确定性、实现“碳中和”目标具有重要意义。自国家重点研发计划项目启动以来,研究团队阐明了多年冻土区碳氮磷循环关键参数的空间格局和驱动因素,构建了多年冻土区首个全生态系统增温实验平台,解析了碳氮循环关键过程对气候变暖等全球变化要素的响应机制,揭示了热融湖塘甲烷(CH4)排放、可溶性有机质降解以及微生物分布特征。项目取得的阶段性成果有望为实现我国“碳中和”战略目标提供科技支撑。An accurate assessment of basic characteristics and future dynamics of carbon sink/source in permafrost regions is crucial for diminishing the uncertainties in the carbon budget for China's terrestrial ecosystems,as well as for the attainment of the“carbon neutrality”goal.For this purpose,the research team for the National Key Research and Development Program of China has made the following progresses:(1)The large-scale patterns and potential drivers of carbon,nitrogen and phosphorus cycling have been elucidated across the permafrost region.(2)The first whole-ecosystem warming experimental platform has been established in the permafrost region.(3)The mechanisms behind the responses of key carbon and nitrogen cycling processes to global change drivers(such as climate warming)have been clarified.(4)The characteristics of methane emissions,dissolved organic matter degradation,and the distribution patterns of microbes in thermokarst lakes have been explored.These findings made so far are expected to provide scientific and technological support to achieve the strategic goal of“carbon neutrality”at the national scale.

关 键 词：冻土生态系统 碳氮磷循环 全球变暖 多年冻土融化 热喀斯特地貌形成 全生态系统增温实验 

分 类 号：P467[天文地球—大气科学及气象学]