摘要
湿地是大气甲烷(CH4)的主要排放源,大气甲烷排放量的日益增加,给全球气候变化带来很大影响,准确估算湿地甲烷的排放量意义重大。目前湿地甲烷排放量估算模型主要有经验模型、机理过程模型和遥感参数模型,通过对三种模型的发展过程、应用状况及优缺点的对比分析和总结,分析了湿地甲烷排放、监测过程及模型估算方面的不确定性,指出了湿地甲烷排放估算的发展趋势,提出遥感参数模型将是湿地甲烷排放估算模型今后的发展方向。
Wetland is the main source of atmospheric methane. The increasing emission of atmospheric methane has brought great influence to the global climate change, and it has great significance to estimate wetlands methane emission accurately. Currently, the wetlands methane emission estimation models include mainly the experience model, the mechanism and process model and the remote sensing parameter model. The development process, application status, advantages and disadvantages of these three models were analyzed and summarized, and the uncertainty of these models were analyzed from the aspects of the wetlands methane emission, the monitoring process and the model estimation. The development trends of the wetlands methane emission estimation model were pointed out, and it was put forward that the remote sensing parameter model would be the development direction of wetlands methane emission estimation model.
出处
《环境工程技术学报》
CAS
2012年第1期67-75,共9页
Journal of Environmental Engineering Technology
基金
国家环境保护公益性行业科研专项(200909113
201009021)
国家自然科学基金项目(41171318
41001160)
国家科技合作计划(2009DFA91710)
关键词
甲烷
估算模型
不确定性
湿地
methane
estimation model
uncertainty
wetlands
