冻融过程与陆地生态系统碳循环的相互关系研究进展

全球变化与可持续发展研究是当今地学研究的两大主题,陆地生态系统碳循环对全球变化影响重大。冻土中的碳储量占据全球陆地碳储量的重要份额,它对气候变化十分敏感,是气候变化的指示器,研究冻土地区土壤的冻融过程及其与陆地生态系统碳循环之间的相互关系对于全球变化研究具有重要意义。在总结冻融对碳循环过程影响机理的基础上,回顾了国内外关于冻融影响下碳循环模拟研究的主要进展,指出了其存在的主要问题,并对未来冻融与碳循环研究发展趋势做了初步的展望。

Advances in the Studies of the Interaction between Terrestrial Ecosystem Carbon Cycle and Freezing-Thawing Process

The studies of the global change and the sustainable development are the two principal themes in the current geoscience researches.The terrestrial ecosystem has great significance in global change.Many of the terrestrial carbon reserves are stored in the freezing regions.However,the carbon in these regions is particularly sensitive to the global warming.Therefore it can play one of the important indicators of the climate change.As a result,the research of the soil freeze-thawing process in freezing regions and its relationship with the terrestrial ecosystem carbon cycle is significant to the global change research.In this paper,the mechanism of the interactions between freeze\|thawing process and ecosystem carbon cycle were summarized.The advances in the carbon cycle modeling were introduced and the mayor existing problems were analyzed.Meanwhile,the future research trends between freeze-thawing process and carbon cycle were put forward.In addition,a case study of the impact of the carbon cycle model considering of the freeze\|thawing process on the improvement of simulation accuracy was illustrated.