中国岩溶碳汇潜力研究  

A Study of Carbon Sink Capacity of Karst Processes in China

作　　者：蒋忠诚[1,2,3] 袁道先[1,2,3] 曹建华[1,2,3] 覃小群[1,2,3] 何师意[1,2,3] 章程[1,2,3] 

机构地区：[1]中国地质科学院岩溶地质研究所,广西桂林541004 [2]国土资源部,广西岩溶动力学重点实验室,广西桂林541004 [3]中国地质科学院岩溶生态系统与石漠化治理重点实验室,广西桂林541004

出　　处：《地球学报》2012年第2期129-134,共6页Acta Geoscientica Sinica

基　　金：中国地质调查项目“中国地质碳汇潜力研究”(编号:1212011087121)资助

摘　　要：为了应对全球环境变化,中国地质科学院岩溶地质研究所等单位在地质调查项目的资助下,在中国典型岩溶流域开展了岩溶碳汇调查,建立了岩溶碳汇观测网站,深化了岩溶碳汇过程、影响因素和形成机理研究,发现了岩溶区外源水、土地合理利用、植被恢复和水生光合作用等增加岩溶碳汇的途径,取得了大量的科技创新进展。在调查研究的基础上,将我国岩溶区划分为南方岩溶区、北方岩溶区、青藏高原岩溶区和埋藏岩溶区4种类型区,利用GIS技术计算各区的岩溶面积和岩溶碳汇量,获得中国岩溶碳汇总量为3699.1万tCO2/a,这是我国344万km2岩溶区碳水钙无机循环产生的大气CO2汇。该项研究进展在2011年的《Science》通讯报道中获得高度评价。In order to tackle global climate changes, a research team from the Institute of Karst Geology in Guilin has been conducting the karst carbon sink study for three yeas under the auspices of the geological survey projects. Until now, 29 karst carbon sink monitoring stations in China and 3 stations in other countries have been established. In order to explore the capacity of atmospheric CO2 sink in karst progresses of China, the authors investigated all relative factors of karst carbon sink such as rock chemical contents, soil gas CO2, land and vegetation coverage and discharge and bicarbonate concentrations of water flow in some typical karst basins, carried out some special researches such as karst carbon sink in different land uses, karst carbon sink from autogenic water, karst carbon sink of vegetation rehabilitations of the rock desertification environments, soil organic carbon solidification in karst area and carbon sink from photosynthesis of hydrophytes in karst water and, as a result, achieved a lot of new scientific progresses. In order to calculate the atmospheric CO2 sink in karst progresses of China, the authors divided karst districts in China into four types of karst regions, i.e., the karst region in south China, the karst region in northern China, the Tibet plateau karst region and the buried karst region, with their areas being 564,800 km2, 325,800 km2, 556,000 km2 and 2,001,000 km2 respectively. The total new atmospheric CO2 sink formed in karst regions of China is 3699. 1×104 t CO2/a, which is the atmospheric CO2 sink quantity of all 3,440,000 km2 karst areas in China. The importance of the karst carbon sink study was reported in the journal ＂Science＂ in 2011.

关 键 词：岩溶作用 全球变化 二氧化碳汇 中国 

分 类 号：P931.5[天文地球—自然地理学] X16[环境科学与工程—环境科学]