摘要以沛县为研究对象,选取水系因子,土地利用方式因子、自然保护区(包括公园和风景名胜区)因子、历史遗迹和文物古迹因子为主要研究因子,凭借GIS 9。3技术手段分别对单因子进行评价和多因子叠加评价,通过对沛县地区进行深层次分析,从而对该区域的生态敏感性和空间分布进行研究评价。根据研究区域沛县不同地区的生态敏感性程度不同,并按照生态敏感性程度的高低,将研究区域划分为5个级别,分别是极高敏感区,高敏感区,中敏感区,低敏感区和非敏感区。根据不同级别的敏感区,可以对其进行分区域研究和特殊保护,这为沛县地区的生态环境和区域社会经济的快速发展提供了重要的价值基础。经研究后其结果显示,极高敏感区占沛县地区总面积的6。26%,高敏感区占沛县地区总面积的17。71%,中敏感区占区域总面积的55。83%,低敏感区占总面积的8。84%,非敏感性区占总面积的11。35%。表明该研究区域沛县生态敏感性以中敏感区为主,极高敏感区的分布比较少。72870
毕业论文关键词:沛县,GIS,生态敏感性
Abstract Peixian has been taken as the research object。 The study factors are drainage factor, land utilization type factor, nature reserve factor and historical sites and cultural relics factor。 With GIS 9。3 technology, single factor and multiple factors are respectively evaluated。 Through the deep analysis of Peixian area, ecological sensitivity and its distribution are thoroughly analyzed。 According to the ecological sensitivity of Peixian , the study area is pided into five levels: extreme high sensitive area, high sensitive area, moderate sensitive area, low sensitive area and non-sensitive area。 According to the different levels of the sensitive area, it can help us research Peixian, protect it, and provide the reference value for the area of Peixian about the development of ecological environment, society and economy。 The result indicates that: 6。26% of the study area is extreme sensitive area,17。71% of the study area is high sensitive area,55。83% of the study area is moderate sensitive area,8。84% of the study area is low sensitive area and 11。35 % of the study area is non-sensitive area, which indicates that the ecological sensitivity in Peixian is mainly moderate sensitive area and the extreme sensitive area distributes very less。
Key Words: Peixian,GIS,ecological sensitivity。
目 录
摘 要 I
Abstract II
1 绪 论 1
1。1 研究目的与意义 1
1。2 研究区域概况 1
1。4 研究内容 3
1。5 本章小结 3
2 生态敏感性影响因子分析 4
2。1 影响因子的选取 4
2。2 影响因子的等级划分 5
2。3 本章小结 6
3 研究方法 8
3。1 ARCGIS 8
3。2 叠加分析 8
3。3 分级编码 8
3。4 本章小结 9
4 评价结果与分析 10
4。1 水系的生态敏感性