本溪市水土保持区划研究

发布时间：2018-04-06 03:31

  本文选题：水土保持区划　切入点：指标体系　出处：《北京林业大学》2016年硕士论文

【摘要】：近年来,本溪市资源开发利用的强度加大,人为扰动地表面积增加,水土流失日益严重,因此,加强本溪市水土保持区划研究,对于宏观指导该区域水土保持工作具有重要意义。本研究在充分调查本溪市各区的自然条件、水土流失及社会经济条件的基础上,构建本溪市水土保持区划指标体系,运用SPSS软件采用主成分分析法和聚类分析法对本溪市以县级为单位进行区划,根据分析结果将本溪市划分为三个水土保持区,分别为本溪东部山地丘陵水源涵养减灾区、本溪中部低山丘陵水质生态维护区和本溪西部丘陵生态维护区。此外,还对3个水土保持分区进行了调查,针对各分区特点提出其水土保持工作方向。研究具体结果如下：(1)本溪市水土保持区划指标体系。通过对本溪市自然概况、社会经济和水土流失等情况调查分析,确定了以下水土保持区划指标,分别是平均海拔、相对高差、多年平均气温、≥10℃积温、多年平均降雨量、汛期降雨量占全年降雨量比、多年平均风速、多年平均大风日数、林草植被覆盖率、人口密度、农村人均纯收入、人均GDP、第一产业产值比例、第二产业产值比例、耕地占土地面积比例、坡耕地占耕地面积比例、林地占土地面积比例、城镇村及工矿用地、水土流失面积比例、侵蚀强度、中度以上水土流失面积比例和沟壑密度等21个指标。提取的这些指标可较全面体现本溪市区域特征。(2)本溪市水土保持区划分区。本研究将本溪市的桓仁满族自治县划为本溪东部山地丘陵水源涵养减灾区：将本溪满族自治县划为本溪中部低山丘陵水质生态维护区；将明山区、平山区、溪湖区和南芬区划为本溪西部丘陵生态维护区3个分区,得到了水土保持分区图。(3)水土保持分区工作方向。本研究经过调查分析得到本溪市东部山地区以增强径流调节能力,水源涵养和保护表土资源防止山地灾害等为水土保持重点；本溪市中部低山丘陵区以封禁治理、工程整地、布设梯田以及控制人为破坏等措施为水土流失防治重点；本溪市西部丘陵区以保护水土资源、裸地生态修复和城市美化等为水土保持重点。本文的创新点：本研究首次构建本溪市水土保持区划指标体系,完成省级与地级市区划的链接,更深入的结合本溪市区域特点针对差异性地区制定了水土保持工作方向,填补了本溪市水土保持区划空白。
[Abstract]:In recent years, the intensity of exploitation and utilization of resources in Benxi has increased, the artificial disturbance surface area has increased, and soil erosion has become increasingly serious. Therefore, the study on the regionalization of soil and water conservation in Benxi City has been strengthened.It is of great significance to guide the work of soil and water conservation in this area macroscopically.Based on the investigation of the natural conditions, soil erosion and social and economic conditions in Benxi, the index system of soil and water conservation zonation in Benxi was constructed.Using SPSS software, principal component analysis and cluster analysis were used to divide Benxi into three soil and water conservation areas according to the results of the analysis, which were divided into three areas of water conservation and disaster reduction in the eastern mountain and hilly region of Benxi.Central Benxi low hill water quality ecological maintenance area and western Benxi hill ecological maintenance area.In addition, three soil and water conservation zones were investigated, and the working direction of soil and water conservation was put forward according to the characteristics of each zone.The results are as follows: 1) the index system of soil and water conservation regionalization in Benxi city.Through the investigation and analysis of the natural situation, social economy and soil erosion in Benxi City, the following indexes of soil and water conservation regionalization are determined: average elevation, relative height difference, annual mean temperature, accumulated temperature 鈮，

本文编号：1717798