我国草地的固碳功能  

Carbon Sequestration of Grassland in China

作　　者：高树琴[1] 赵霞[1] 方精云[1] 

机构地区：[1]植被与环境变化国家重点实验室,中国科学院植物研究所,北京100093

出　　处：《中国工程科学》2016年第1期73-79,共7页Strategic Study of CAE

基　　金：中国工程院重大咨询项目“中国草地生态保障与食物安全战略研究”(2012-ZD-7)

摘　　要：本文通过综述当前我国草地碳库的研究成果,并利用1982—2011年的遥感影像,估算出我国草地生态系统碳库约为31.2 Pg C,其中96%储存于土壤中。由于我国草地类型多样,分布地域广阔,造成草地植被碳密度分布的空间异质性很高。内蒙古是草地植被碳库最大的省份,其次是西藏和青海,六大牧区的植被碳库占全国草地植被碳库总量的71%。然而,我国90%的天然草地发生不同程度的退化,采取有效的人工管理措施和实施重大的生态建设工程,均对草地碳库的恢复具有明显的作用,说明我国草地有很大的碳汇潜力。Based on the research of the grassland carbon sink in China and the remote sensing data from 1982 to 2011, the total carbon storage of the grassland ecosystem in China is about 31.2 PgC, 96 % of which are stored in the soil. The vegetation carbon density of grassland is highly spatially heterogeneous due to various types of grassland and vast distribution in China. The largest grassland vegetation carbon sink in China is located in Inner Mongolia, followed by Tibet and Qinghai, while that of the six main pastoral areas accounts for 71% of the national grassland vegetation carbon sink. However, 90 % of the natural grassland in China has degraded more or less. Effective managements and implementation of major ecological construction projects have played an important role in the recovery of grassland carbon storage, which indicates that the grassland in China has great potential for carbon sequestration.

关 键 词：草地 植被碳储量 土壤碳储量 草地退化 固碳潜力 

分 类 号：S812[农业科学—草业科学]