摘要
干旱半干旱区是陆地生态系统的重要组成部分,在陆地生态系统碳循环过程中起着非常重要的作用,了解该区目前碳循环研究现状对准确评估陆地生态系统碳收支具有重要意义。概述了碳循环的基本概念,归纳了影响干旱半干旱区碳循环的环境因素(辐射,温度,水分条件等),并总结了目前该区域碳通量研究现状。指出目前干旱半干旱区生态系统碳循环研究仍存在诸多薄弱环节,最后提出今后重点研究的方向:(1)不同时空尺度生态系统碳循环研究;(2)碳源/汇的物理、化学以及生物过程的研究;(3)从整体和系统的角度来研究干旱半干旱区生态系统碳循环;(4)制定统一的野外监测与试验方法。
Arid and semi-arid area covered a vast and continuous region and played an important role in terrestrial ecosystems, thus research in carbon cycle of arid and semi-arid areas ecosystem was contributive to estimating terrestrial ecosystems carbon storage and understanding the process of carbon cycle. The basic concepts of carbon cycle were outlined, different environment factors （such as solar radiation, temperature, water conditions and so on） of carbon cycle and present carbon flux researches in arid and semi-arid areas were summarized. There were still some weaknesses of the carbon cycle research in arid and semi-arid areas ecosystem of China. At last, the future research trends in carbon cycle research in China arid and semi-arid areas ecosystem were put h）rward： （1） carbon cycle research in different time and space scale; （2） physical, chemistry and biological process research of carbon source and carbon sink; （3） studies from the system and the whole angle; （4） draw up a unified method of field monitoring and test.
出处
《中国农学通报》
CSCD
2013年第35期205-210,共6页
Chinese Agricultural Science Bulletin
基金
国家科技支撑计划课题"敦煌生态修复关键技术研究与示范"(2012BAC08B07)
关键词
中国西北
干旱半干旱区
碳循环
研究进展
northwest of China
arid and semi-arid areas
carbon cycle
research progress
