Research progresses in mechanisms of soil carbon sequestration in plantations in China
In the global carbon balance, soil has a carbon stock of 2 000 Pg, with 500 Pg in vegetation and 785 Pg in the atmosphere. Soil plays a key role in regulating allocation of global carbon. China has largest area of plantation in the world. Proper selection of tree species could enhance ability of carbon sink in plantation soil, which is realized by 4 mechanisms:formation of organic-mineral complexation, long-standing sequestration in deep soil, recalcitrant organic component in litter and physical protection in soil aggregates. In recent years, China has great demand for timber, leading to expansion of short-rotation plantation. Logging, burning, fertilization land preparation could exert influence on carbon sink of soil. In this context, we could establish plantations of high carbon sequestration by comparing properties of soil organic carbon. Enhanced carbon sink in plantations will help in reducing potential of greenhouse effect. In this field, impact of plantation management strategies on soil carbon sink is urgently needed to be investigated.
国家科技期刊平台
NSTL
万方数据
维普
