土地利用变化对生态系统固碳服务影响研究——以内蒙古乌审旗为例

以乌审旗陆地生态系统为研究对象,使用1987、1997、2007、2012年4期土地利用图,结合有机碳密度实测数据,在InVEST软件支持下对该旗生态系统固碳服务进行评估。结果表明:在1987—2012年25 a中,乌审旗陆地生态系统有机碳储量呈先减少后增加的变化趋势,且生态系统固碳能力相对于该旗的土地利用变化具有一定的“延迟”;乌审旗沙地生态系统存在较大的碳增汇潜力,转变土地利用方式、加强湿地保育等措施是适宜该地区有效的碳增汇途径。

Effect of Land Use Changes on Carbon Sequestration---Taking Uxin Banner,Inner Mongdia for an Example

To assess the increment of organic carbon sequestration and regulation approaches for arid land, Uxin Banner (equal to county), located in Mu Us Sandy land, Inner Mongolia, China, was selected as a case study. Combining 4 land use maps of 1987, 1997, 2007, 2012 and carbon density data, we analysed an organic carbon storage using InVEST software package, to make a relatively detailed evaluation on the carbon sequestration services of Uxin Banner. The results showed that during the 25 years from 1987 to 2012 patterns revealed that carbon storage decreased from 1987 to 1997 and increased from 1997 to 2012. The trend of carbon storage is delayed to the trend of desertification. This analysis indicate that the potential of carbon sequestration increment in Uxin Banner is relatively large if effective regulatory approaches, such as transferring land use patterns, and wetland conservation, are applied. This research uses scientific output to provide recommendations that encourage balancing protection of the natural environment with the development of social economy through regulatory approaches and measures suitable for the increment of carbon sequestration.