土壤碳组分及其环境意义概述

Summary on soil carbon fractions and environmental significance

气候变化是当下的热门话题,碳的源汇问题也倍受关注。土壤碳库是陆地最大的碳库,土壤有机碳又是土壤极为重要的组成部分,而土壤有机碳的不同组分具有不同的周转方式及其环境意义。本文阐述了几种主要土壤有机碳组分(水溶性有机碳、微生物量碳、颗粒有机碳、轻组和重组有机碳、土壤黑碳)的环境意义、周转方式及其研究进展,认为对土壤有机碳组分进行耦合研究具有理论和实践意义。

Climate change is a hot topic. Carbon source and sinks have attracted much attention. Soil carbon pool is the largest carbon pool in the land. Soil organic carbon is an important component of soil. Different components of soil organic carbon have different turnaround mode and environmental significance. This paper elucidated the environmental significance, turnaround mode and research progress of several main soil organic carbon components. Conclusion have theoretical and practical significance for the coupling study of soil organic carbon fractions.