基于CASA模型的农村生态系统服务价值动态变化  

The Dynamic Change of Rural Ecosystem Service Value Based on CASA Model

作　　者：邹伏霞[1] ZOU Fu-xia(College of Bioscience and Biotechnology/Hunan Agricultural University,Changsha 410128,China)

机构地区：[1]湖南农业大学生物科学技术学院,湖南长沙410128

出　　处：《山东农业大学学报（自然科学版）》2020年第2期249-252,共4页Journal of Shandong Agricultural University：Natural Science Edition

摘　　要：生态系统服务价值可体现区域生态环境状态与生态效益,其动态变化研究对于区域生态建设及可持续发展具有重要意义。本文利用CASA模型,基于光合有效辐射和光能转化率计算生态系统服务功能价值系数;利用价值系数和土地利用类型面积构建农村生态系统服务功能价值计算模型并优化该模型,得到生态系统服务价值;在价值计算基础上结合Slope趋势变化研究方法得到农村生态系统服务价值动态变化趋势。以延安市柳林镇为研究对象,研究其2010年-2019年间生态系统服务价值动态变化情况,研究结果显示该区域大部分土地生态系统服务价值处于稳定状态,且符合实际情况,说明研究方法可准确分析农村生态系统服务价值动态变化趋势。Ecosystem service value can reflect the state of regional ecological environment and ecological benefits, and its dynamic change research is of great significance for regional ecological construction and sustainable development. This paper calculated the service function value coefficient of the ecosystem based on the photosynthetic effective radiation and the conversion rate of light energy by using the CASA model, constructed and optimized the service function value calculation model of the rural ecosystem by using the value coefficient and the land use type area, and obtained the service value of the rural ecosystem based on the value calculation according to slope trend change research method, the dynamic change trend of rural ecosystem service value was obtained. Taking Liulin town of Yan’an City as the research object, this paper studied the dynamic change of ecosystem service value from 2010 to 2019. The results showed that most of the land ecosystem service value in this area was in a stable state, which was in line with the actual situation. It showed that the research method could accurately analyze the dynamic change trend of rural ecosystem service value.

关 键 词：CASA模型 农村生态 服务价值 动态变化 

分 类 号：F301.24[经济管理—产业经济]