河南省土地利用下的生态系统服务变化分析

Analysis on ecosystem service change based on land use in Henan Province

土地利用变化下的生态系统服务变化是研究全球环境变化的基础方向之一,采用地理信息系统技术对河南1990—2010年的土地利用数据进行处理,结合COSTANZA和谢高地等人的研究方法构建数学模型对河南土地利用覆盖下的生态系统服务变化进行量化分析,得出河南省土地的综合利用动态度为1.7%,伴随产生6×109元生态系统服务价值的变化.研究表明,河南省生态系统服务价值逐渐降低,在耕地和林地面积相对变化不大的情况下,水域面积变化对河南省生态系统服务价值降低的影响最高.研究结果为下一步基于格局和过程的生态系统服务价值变化提供基础,为河南省政府决策提供参考.

Ecosystem service change research based on Land Use/ Coverage Change is the basic fields of global environment change research. With the aim to investigate variations in ecosystem services in response to land use changes, techniques of geographic information system and methods of COSTANZA and Xie Gao-di were integrated into the evaluation model to calculate the ecosystem services value in Henan province from 1990 to 2010. The result shows that： the index of total change of land use is 1.7% which has led to the ecosystem service value of 6 × 109 yuan. Henan ecosystem service has fall- en down in this term. If there is little change of area of cultivated land and woodland, change of area of water is the most important factor affecting the decreasing of ecosystem service value. This paper can make a base of ecosystem service change which based on pattern and process, and provide suggestion for government to make decisions.