基于生态系统服务价值变化的生态经济协调发展研究

以1987年、2000年和2010年石羊河流域遥感影像数据为基础，对生态系统单位面积服务价值当量因子进行修正，结合生态经济协调度（EEH）评估模型对石羊河流域生态服务价值和经济发展与生态环境的协调发展水平进行了评估。结果表明：（1）研究区生态系统服务价值呈下降趋势，其损失主要集中在2000-2010年间；（2）生态系统服务价值增长的县（区）分布在流域中上游，降低的县（区）中，民勤县的损失量和下降幅度最大；（3）研究区的EEH值为-0.0174，生态经济发展总体上已处于低度冲突水平，在空间上，低度协调的县（区）主要分布在流域的上游和中游，而低度冲突的县（区）主要分布在流域的中下游；（4）各县（区）在协调发展水平上呈现出低度冲突-低度冲突、低度协调-低度协调、低度冲突-低度协调、低度协调-低度冲突、低度协调-中度冲突5种形式。

Study on Ecology Economy Coordinating Development Based on the Changes of Ecosystem Service Value: A case of the Shiyanghe River Basin

Using the remote sensing image data of 1987, 2000 and 2010 in the Shiyanghe River Basin as the basic data and the ecology economic coordination degree evaluation model (EEH), we evaluated the coordinated level of economic development and ecological environment in the Shiyanghe River Basin with modified ecosystem service value equivalency factors per unit area. The results showed that: (1) ecosystem service value of the studied area presented a downward trend, and the losses of ecosystem service value were mainly concentrated in the phase of 2000-2010; (2) the counties with increased value of ecosystem services were distributed in the upstream of the basin, while among all the counties/districts with reduced values, the ecosystem service value of Minqin county declined the most; (3) the EEH value of the studied area was -0.0174, so the development level of ecological and economic was at a low conflict level, from the point view of spatial distribution, the counties/districts with low coordination degree were mainly distributed in the upstream and midstream of the basin, while those with low degree of conflict were mainly distributed in the downstream of the basin; (4) in the two phases of the studied area, there were five coordinate transformations: low-low conflict; low-low coordination; low conflict-low coordination; low coordination-low conflict; low coordination-moderate conflict.