Key processes of carbon cycle and sink enhancement paths in natural wetland ecosystems in China  

作　　者：Jinshuai LI Tianxiang HAO Meng YANG Guirui YU 

机构地区：[1]Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China [2]College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Earth Sciences》2024年第8期2444-2459,共16页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.31988102)。

摘　　要：Wetland ecosystems have become one of the long-term solutions for mitigating global climate change due to their strong carbon sequestration potential.However,the key carbon cycle processes in wetland ecosystems still lack a systematic summary.In the context of wetland protection and restoration,there is still a lack of consensus on the technical pathways to realize carbon sink multiplication in wetland ecosystems.In this paper,the key processes of carbon cycle,such as photosynthetic carbon uptake,microbial carbon decomposition and carbon deposition and burial,are sorted out and summarized in four major wetland types,namely,swamp and peat wetlands,river and riparian wetlands,lake and lakeshore wetlands,and estuarine and coastal wetlands.Based on the key processes of carbon cycle,three technological pathways for carbon sink multiplication are proposed,including,vegetation carbon sequestration and sink enhancement technology,soil carbon emission reduction technology and carbon deposition and burial technology.The key technologies under each pathway are further refined.And the carbon sink effects of the carbon sink technologies in different wetland types are qualitatively described.Also,wetland protection and restoration methods in corresponding regions are given in the light of the regional characteristics of wetlands in China.This will provide a scientific basis for the strategy of doubling the carbon sinks of China′s wetland ecosystems.

关 键 词：WETLANDS Carbon cycle Carbon sinks Technology pathways Conservation and restoration 

分 类 号：P467[天文地球—大气科学及气象学] X171.1[环境科学与工程—环境科学]