土地利用和覆被变化对土壤碳库和碳循环的影响

Effects of land use/cover changes on soil carbon storage and carbon cycle

土壤是陆地生态系统的重要组成成分,其较小幅度的变化即影响到陆地植被的养分供应,同时可能影响到碳向大气的排放而加剧全球气候变化。本文概述了国内外土壤碳库和碳吸存的研究概况,并对土地利用和覆被变化对土壤碳库和碳循环影响的最新研究进展进行了详尽的阐述,旨在对科学地利用和保护有限的土壤资源,减缓土壤中温室气体排放、增加土壤碳截存,提高土壤质量,对退化土地的生态恢复及环境治理和保护提供理论参考。

Soil is one of the most important parts of land ecosystem. Even the small range of change of it would influence nutrient supplies of land vegetations, and could bring about variation of soil carbon being discharged into the atmosphere and intensify the global climate change. This paper summarizs firstly the advances in the soil carbon and carbon sequestration, then expatiates the effects of land use/cover change on soil carbon and carbon cycle at large. It aims at offering the theoretic references in order to use and protect soil resources rightly, reduce greenhouse gases in the soil being discharged into the atmosphere, increase soil carbon sequestration, improve soil quality, resume degraded soils by ecological measures, and improve and protect the environment.