陆地生态系统碳循环在全球碳循环中占有重要地位,而土地利用变化是估测陆地生态系统碳储存与释放的最大不确定性因素。植被和土壤是陆地生态系统的两大碳库,是碳循环中的两个重要纽带,土地利用变化影响陆地生态系统土壤和植被碳的固定、积累与释放,从而影响整个碳循环过程。本文主要从土壤和植被碳库的角度出发,综述了近年来土地利用变化对陆地生态系统碳循环的影响及其机理,以及研究方法进展,着重分析了模型在此方面的应用;并提出了未来研究方向的展望。
The terrestrial carbon cycle plays an important role in the global carbon cycle.Land-use change is still the most uncertain element in assessing the carbon storage and release in the terrestrial ecosystem.The carbon pools in soil and plant are the two main transiton-forms in the terrestrial ecosystems.Land-use change influences the fixation,accumulation and release of the plant and soil carbon pools in terrestrial ecosystems,affecting the whole carbon cycle.From the aspects of soil and plant carbon pools,this paper reviewed the responses of terrestrial ecosystem carbon cycle processes to land-use change and research methods,especially the model,and made a prospect for future research.