摘要
湿地生态系统在维持碳平衡和全球气候调节中起着重要作用。长江河口湿地生态系统是国际公认的生态过程敏感区,选择长江河口典型湿地——崇明东滩作为长期碳循环观测和实验模拟的研究对象,针对长江河口湿地生态系统碳库动态研究具体的科学问题,从"土壤-植被-大气"连续体(SPAC)碳流过程监测、涡度相关法碳通量监测、植物生长控制实验(开顶式气候室,OTC)、"湿地碳循环-气候变化"生态过程模型构建、多方数据源校正等方面,总结了全球气候变化条件下长江河口湿地碳库动态的研究方法。旨在了解长江河口湿地生态系统碳库动态特征,探寻湿地碳平衡的主导控制因子,评估中国东部沿海湿地碳库对全球气候变化的响应。进而为提出长江河口湿地碳储备功能的保育策略提供理论依据。
Wetlands play an important role in carbon balance of nature and global climate regulation.In China,the huge area of wetlands in Yangtze River estuary is internationally recognized as the eco-sensitive zone.Of this region,taking Chongming Dongtan wetland,which is the typical ecosystem of Yangtze River estuary,as the representative site for the long-term research on carbon pool and the establishment of experiment station.Based on the objective of estimation of the interrelationship and response mechanism between dynamic carbon pool and climate change,we brought forward and set up the research methodology and experimental facilities focusing on carbon process through ＂Soil-Plant-Atmosphere＂ continuum,stand carbon/water/energy flux（by eddy-covariance monitoring）,environment-controlled experiments on vegetation growth（by open top chambers）,application of process-based model on the effects of climate change on wetland carbon cycle（by validation and re-test with multi-resource dataset）.Accordingly,the purpose of this work are（1） to understand the spatial and temporal characteristics of carbon pool dynamics in the estuarial wetland of Yangtze River;（2） to investigate the key factors influencing the fluctuation of carbon balance in the wetland;（3） to evaluate the responses of carbon pools in Yangtze River estuary to climate change,further,to provide the suggestions on conservation and management strategies of carbon pools in the east coast of China.
出处
《生态学报》
CAS
CSCD
北大核心
2010年第4期1097-1108,共12页
Acta Ecologica Sinica
基金
国家“十一五”科技支撑计划资助项目(No.2006BAC01A14)
芬兰杰出教授计划资助项目(FiDiP ro Programme)
上海市城市化生态过程与生态恢复重点实验室开放基金资助项目(2007,2008)
关键词
气候变化
长江河口
湿地碳库
SPAC
涡度相关
OTC
过程模型
climate change
yangtze River estuary
carbon pool in wetland
SPAC
eddy covariance
OTC
process-based model
