摘要生态系统服务价值是人类直接或间接从生态系统获得的利益，是人类生存和发展的基础。近年来随着生态环境的逐渐恶化，其研究价值日益凸显出来。故本文以徐州市生态系统服务价值为研究对象，以2005年和2015年两期Landsat TM影像为数据源，进行影像间的相互校正，运用监督分类中精度较高的最大似然法进行分类，得出徐州市不同的土地利用类型。再运用基于GIS的统计分析得出不同土地利用类型的面积。通过选择合适的生态系统服务价值指标的计算方法，对徐州市生态系统服务价值系数进行构建，建立涵盖面广、结构紧密的生态系统服务价值计算指标体系。并运用VC++计算出徐州市各个县区的生态系统服务价值，使用基于镇行政区划的生态系统服务价值空间分异和1KM×1KM的网格单元的生态系统服务价值两种方法进行定性定量的对比分析，分析徐州市区域生态系统服务价值的空间分异特征，徐州市生态系统服务价值的从大到小排列为:沛县>邳州市>新沂市>铜山县>睢宁县>丰县>贾汪区>鼓楼区>云龙区>泉山区。得出徐州市生态系统服务价值中心低，四周高的结论，具有较高的理论价值。78211

毕业论文关键词：徐州市；GIS；生态系统服务价值；空间分异；网格单元

Abstract

Ecosystem service value is the foundation of human survival and development。,which is directly or indirectly get benefit from ecological system of human interests。 With the worsening of ecological environment in recent years, its research value is increasingly highlighted。In this paper, we take Xuzhou ecosystem service value for the study。 Using 2005 and 2015 two Landsat TM images as data source for mutual correction between images, using the supervised classification to classify the higher precision of the maximum likelihood method , obtained Xuzhou different land use types。 Then use the results of different land use types in the area based on statistical analysis of GIS。 By selecting the appropriate method of calculating the value of ecosystem services indicators of Xuzhou ecosystem services value coefficient build, establish the value of services covers a wide range, compact computing ecosystem indicators。 And use VC ++ to calculate the value of each service county Xuzhou ecosystems, spatial analysis Xuzhou area ecosystem service value of differentiation, in descending order Xuzhou value of ecosystem services is: Peixian> Pizhou> New Yi City> Tongshan County> Suining> Fengxian> Jiawang District> Gulou District> Yunlong District>Quanshanqu。 Xuzhou drawn ecosystem service value lower center, surrounded by high concluded with high theoretical value。 Also in this study, the value of ecosystem services assessment, ecological construction and environmental protection also has high practical significance。

Keyword:Xuzhou City; GIS; ecosystem service value; spatial differentiation;grid cell

目   录

摘要 Ⅰ

Abstract Ⅱ

1 引言 Ⅲ

 1。1研究背景 1

 1。2国内外研究现状 1

2 研究区概况 3

3数据源与预处理 4

  3。1数据源 4

  3。2预处理 4

4。生态系统服务价值分析方法 5

  4。1生态系统服务价值系数计算方法 5

  4。2区域生态系统服务价值计算