森林火灾对冻土环境的影响研究进展

高纬度森林火灾的频繁发生对冻土环境有着十分重要的影响,火灾是破坏冻土环境的一个特殊因素,打破了植被一冻土间长期形成的生态平衡。文章综述了森林火灾后冻土融深、水热状况、化学元素的变化以及冻土释放气体通量规律;气候变化下冻土环境的影响,并对森林火灾后冻土环境变化研究的发展方向进行了思考。在火灾后冻土变化与相关气象因子的耦合关系与冻土碳储量方面还存在许多需要深入研究的问题,冻土研究的空间还应该继续拓宽外延,加强其与碳循环和碳通量等其他研究的连接。

The Research Progress of the Influence of Forest Fire on Frozen Soil Environment

As a particular factor, the frequent occurrence of the high latitude forest fires has a very important influence on frozen soil environment,which breaks the long formed ecological balance between vegetation and frozen soil.This article reviews thawing depth, water and heat condition, chemical element changes,frozen gas flux law ,response of frozen soil environment under the climate change after the forest fires.Also the prospects of the future research on them have been introduced.There are still many problems about coupling relation between frozen soil change and related meteorological factors as well as soil carbon storage.The space of frozen soil should also continue to broaden the extension and strengthen its relationship with the carbon cycle and carbon flux and other research connections.