2000—2013年衡阳市土地利用格局转变对生态系统服务的影响

发布时间：2018-04-08 08:20

本文选题：生态系统服务价值　切入点：土地利用　出处：《中国生态农业学报》2017年07期

【摘要】：将生态系统服务评估利用到区域生态保护决策中的重要途径之一是生态系统服务制图。本研究对衡阳市多期遥感影像进行解译,采用当量因子法估算其生态系统服务价值(ESV)及由土地利用格局转变而引起的价值损益;并在Arc GIS 10.0软件支持下,利用空间自相关、高低聚类及重心分析等空间统计方法,对衡阳市ESV的时空变化进行制图模拟,以期为衡阳市的生态保护规划与管理提供决策辅助。研究结果表明:1)2000—2013年衡阳市的ESV略有降低,由2000年的2 410亿元降至2013年的2 394亿元;转移矩阵分析发现林地及耕地转为建设用地,以及林地转为耕地是引起衡阳市ESV降低的最主要原因。2)衡阳市的ESV高值区对低值区呈包围态势;2000—2013年ESV损失区主要分布于市区及其东部区域,而增值区主要分布于市区西部区域。3)衡阳市ESV的空间自相关与高低值聚集现象明显,其程度趋于增强;ESV重心向西偏北9°方向迁移了245.73 m。可考虑通过限制林地及耕地向建设用地的转变、实施"存量"或"减量"用地政策、维护和强化区域整体生态系统格局的连续性等措施来提高研究区的生态系统服务价值。
[Abstract]:Ecosystem service mapping is one of the important ways to apply ecosystem service assessment to regional ecological protection decision.In this study, the multi-period remote sensing images of Hengyang City were interpreted, the value of ecosystem services was estimated by equivalent factor method, and the value gains and losses caused by the change of land use pattern were estimated, and the spatial autocorrelation was used with the support of Arc GIS 10.0 software.The spatial statistical methods such as clustering and barycenter analysis were used to simulate the spatial and temporal changes of ESV in Hengyang City in order to provide decision support for ecological protection planning and management in Hengyang City.The results show that the ESV of Hengyang City decreased slightly from 2000 to 2013, from 2 41 billion yuan in 2000 to 2 39.4 billion yuan in 2013.And the conversion of woodland to cultivated land is the main cause of the decrease of ESV in Hengyang. 2) the high value area of ESV in Hengyang City is surrounded by the low value area. From 2000 to 2013, the area of ESV loss is mainly distributed in the urban area and its eastern area.The spatial autocorrelation and the concentration of high and low values of ESV in Hengyang City are obvious, and the intensity tends to increase, and the center of gravity migrates 245.73 m to 9 掳from west to north.Some measures can be taken to improve the ecosystem service value of the study area, such as restricting the conversion of woodland and cultivated land to construction land, implementing the policy of "stock" or "reducing" the land use, and maintaining and strengthening the continuity of the whole ecosystem pattern of the region.
【作者单位】：南华大学设计艺术学院;衡阳市科技信息研究所;
【基金】：湖南省科技计划项目(2015SK2003) 衡阳市社会科学项目(2015D040,2016D090,2016D038) 衡阳市科技计划项目(2015KS02)资助~~
【分类号】：F301.24

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