摘要
生态资产是生态系统生物资源直接价值及其生态服务功能价值的总和,对生态资产价值进行评估是政府宏观决策和生态环境建设的必要条件。该文提出了基于遥感定量测量的生态资产价值评估模型,并利用MODIS卫星数据和其它辅助数据,对内蒙古自治区进行了陆地生态资产的定量测量。定量测量结果显示,研究区生态资产存量为3913 7×108元,其中草地对区域生态价值的贡献最大,占研究区总生态资产存量的50 2%,但森林对区域生态价值的贡献率最高,达到2144元 hm2,远远超出其他类型生态系统。通过对研究区生态资产空间分布及结构分析,发现该区域的生态资产空间分布极不平衡,东北部到西南部以近似几何级数的方式急剧递减,广大中西部地区生态建设和提高生态储量的潜力巨大。在对内蒙古自治区陆地生态系统生态资产空间分布及其组成结构特点分析的基础上,将研究区划分为4个生态资产区,针对不同的区域提出相应的生态建设目标,并对研究区生态建设的空间布局进行了初步探讨。
Ecological capital is the summation of direct value and ecological service function value of ecosystem biotic resources. It is necessary for government macro-decision-making and ecological environment construction to assess ecological capital. This paper puts forward an evaluation model of ecological capital based on quantitative measurement remote sensing, and uses MODIS satellite data and some other auxiliary data to assess ecological capital of Inner Mongolia. The result shows that stock of ecological capital of the study area is (3 913.7)×10~8 RMB, in which 50.2% is contributed by grassland. We also find out that forest has the highest ecological capital stock per unit area of (2 144) RMB/hm^2. By analyzing spatial distribution of ecological capital, we find distribution of ecological capital of the study area is quite not even. Ecological capital stock of the study area decreases quickly from northeast to southwest almost in manner of geometric series. Based on analysis of spatial distribution with its feature of component of ecological capital, we divide study area into 4 ecological capital sub-zones, and put forward different ecological construction objects for them according to their features.
出处
《资源科学》
CSSCI
CSCD
北大核心
2004年第3期22-28,共7页
Resources Science
基金
国家高技术研究发展计划(编号:2002AA133060
2002AA130020)
国际科技合作重点项目(编号:2002DFG00046)。
关键词
生态服务
生态资产
遥感
空间格局
Ecological service
Ecological capital
Remote sensing
Spatial pattern
