我国草地生态系统碳循环研究进展  

The Progress in the Carbon Cycle Researches in Grassland Ecosystem in China

作　　者：齐玉春[1] 董云社[1] 耿元波[1] 杨小红[1] 耿会立[2] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]西北农林科技大学资源环境学院,陕西杨凌712100

出　　处：《地理科学进展》2003年第4期342-352,共11页Progress in Geography

基　　金：中国科学院知识创新重大项目(KZCX1-SW-01-04);中国科学院地理科学与资源研究所知识创新项目(CXIOG-E01-03-01与CXIOG-A00-06);国家重点基础研究发展规划项目(2002CB412503);国家自然科学基金项目(49971005)

摘　　要：文中首先分析了草地生态系统在碳循环研究中的地位和重要性,进而对我国草地生态系统碳循环的研究现状作了较为详尽的阐述,包括植物、凋落物、土壤三大碳库以及主要含碳温室气体通量等,对其主要研究结论进行了深入的剖析。同时提出了今后我国草地生态系统碳循环的重点研究方向和研究领域。Carbon is one of the most important life elements on the earth It distributes widely in the atmosphere, biosphere, hydrosphere and lithosphere Together with the exchange of the substance and energy, the carbon element is transformed among different earth layers, as constitutes the most important biogeochemical cycle process of the earth Atmosphere, ocean, terrestrial ecosystem and lithosphere are four main carbon pools Among these carbon pools, the terrestrial ecosystem has the biggest uncertainty because of the complexity of underlying surface and the human activities Study on the carbon cycle of the terrestrial ecosystem has become the focus of global change research As one of the important parts of terrestrial ecosystem, grassland ecosystem occupies particular eco geographical place and has special biogeochemical cycling process, which make it important in the study of the terrestrial ecosystem carbon cycle and the sustainable development of eco environment In this paper, the importance of the carbon cycle in grassland ecosystem was discussed Then, the research results of carbon cycle in the grassland ecosystem in China were summarized and analyzed, including the plant, the litter fall, the soil carbon pool and the greenhouse gases flux and so on Additionally, some issues unsettled in grassland carbon cycle and the related research emphases in the future were put forward

关 键 词：草地 碳循环 碳库 温室气体 

分 类 号：P595[天文地球—地球化学]