三江平原稻田甲烷排放的模拟与估算  

Simulation and estimation of methane emissions from rice paddies in Sanjiang Plain of the Northeast China

作　　者：张远[1,2] 李颖[1] 王毅勇[1] 宋书艺[3] 李长生[4] 

机构地区：[1]中国科学院东北地理与农业生态研究所,长春130012 [2]华东师范大学资源与环境科学学院,上海200062 [3]浙江大学环境与资源学院,杭州310058 [4]美国新罕布什尔大学地球、海洋与空间研究所,达勒姆NH03824

出　　处：《农业工程学报》2011年第8期293-298,I0004,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：中国科学院知识创新工程项目(KZCX2-YW-Q06-03)中国科学院东北地理与农业生态研究所前沿领域项目(KZCX3-SW-NA09-05);国家自然科学基金项目(41001202)共同资助

摘　　要：本研究以三江平原为研究区,利用遥感信息提取技术获得研究区水稻田的空间分布信息,并结合DNDC模型对稻田温室气体甲烷的季节排放进行了模拟和估算。结果显示2006年研究区的水稻田面积为1.428×106hm2,每季向大气净排放的甲烷-碳总量为0.424-0.513Tg(1Tg=1012g),并且空间上具有较大的排放差异。研究表明,集成遥感信息技术和生态模型模拟方法,将为编制稻田温室气体排放清单和制定减排策略提供潜在的手段。The Sanjiang Plain （SJP） of the Northeast China was selected as study area. Remote sensing （RS） information abstracting technology was applied to acquire spatial distribution of rice paddies, and a process-based biogeochemical model, the Denitrification and Decomposition （DNDC） model, was used to simulate and estimate the seasonal methane （CH4） emissions from rice paddies. Results showed that a total of 1.428×106 ha rice paddies cover the entire SJP released 0.424-0.513 Tg CH4-C to the atmosphere in 2006. Distinct variations in the spatial pattern of CH4 emissions were also recognized within the Plain. This study indicated that the integration of RS techniques and ecological modeling will be a potential alternative for developing the regional inventories of greenhouse gas emissions and making CH4 mitigation strategies in rice cropping system.

关 键 词：甲烷 模型 模拟 水稻田 三江平原 

分 类 号：X142[环境科学与工程—环境科学]