陆地生态系统CO_2与水热通量的研究进展

摘要

陆地生态系统CO2和水热通量研究,一直是全球气候变化研究的热点与难点问题。它对认识生态系统变化规律,预测全球气候变化趋势,评价生态系统的碳固定具有重要的科学意义。涡度相关法被认为是目前测定CO2、水热通量的最可靠方法。国外学者应用此方法解决了均匀下垫面假设下不同类型生态系统的CO2、水热通量的计算问题。在查阅前人研究成果的基础上,分析了陆地生态系统用涡度相关法在能量通量研究中的地位和重要性,评述了生态系统水热平衡的研究意义,总结了我国包括森林、草地、荒漠、农田等不同类型生态系统CO2、水热通量方面最新的研究进展,并对我国生态系统通量未来的研究策略及数据管理提出了建议和展望。%The problem of CO2,water and heat fluxes in terrestrial ecosystem is a key and difficult research point in the field of global climate change.It has important scientific significance to understanding the ecosystem change rule,predicting the trend of global climate change and evaluating the carbon sequestration of ecosystem.At present,eddy-covariance technique is considered the most reliable method for measuring CO2,water and heat fluxes.Foreign scholars solved the calculation problem of CO2,water and heat fluxes in different ecological ecosystems under the assumption of homogeneous underlying surface by just applying this method.On the basis of previous research results,the status and importance of the eddy correlation method by using in terrestrial ecosystems was analyzed.The significance of the water and heat balance in ecosystems was reviewed.The latest research progress on CO2,water and heat fluxes in different ecosystems which includes forest,grassland,desert and farmland in our country was summarized.The some suggestions and research prospect to the tactics and data management of our country ecosystems flux were put forward.