基于Landsat遥感影像评估老挝PhouKhaoKhouay国家保护区的土地利用及土地覆盖变化

发布时间：2018-01-10 02:07

本文关键词：基于Landsat遥感影像评估老挝PhouKhaoKhouay国家保护区的土地利用及土地覆盖变化　出处：《北京林业大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文的主要目标是对PhouKhaoKhouay国家级保护区域1999年-2014年的土地利用和土地覆盖变化进行研究。以老挝民主共和国Vientiane省Thoulakhom地区的Vanghua村为例,基于问卷调查的方法,研究了当地村民对土地利用变化的看法。采用遥感技术和地理信息系统技术,对土地利用和土地覆盖的动态进行研究,使用的遥感影像数据包括1999年Landsat 5专题测图仪,2006年Landsat 7加强版专题测图仪和2014年的Landsat 8操作陆地图像。使用监督分类的方法对土地使用及土地覆盖图进行分类,基于这种方法,Landsat图像主要分为9类。同时进行了地面调查,所得数据用来对GIS和RS所得的评价结果进行校正,并计算评价结果的总体准确率。研究结果表明从1999年到2014年,研究区域的森林覆盖率呈现出下降的趋势,但其中从1999年至2006年森林覆盖率有一个快速的减少,从类别上看,在这段研究时间内,常绿林,阔叶混交林和灌木总共减少了1.11%,而人工林和水体面积分别增加了0.28%和1.83%。从2006年至2014年,森林覆盖率增加了0.55%(主要为常绿林和阔叶混交林),相反,农业用地减少,主要用以恢复灌木面积及天然次生林。基于地面调查结果的订正,基于GIS和RS估测结果的总体准确率为82%。在当地村民对森林资源、森林管理组织及社会经济现状看法的研究中,总共选取了221户家庭进行问卷调查。调查问卷结果经过微软办公系统Excel分析,计数,计算百分比,最小值,最大值,平均值及标准离差。研究结果表明,当地村民对包括9种森林活动的森林资源重要性的看法的平均值是31.36,处于显著水平,其中具有最高平均价值的活动是森林在自然教育中的重要性,平均值为3.66。村民对森林资源管理规定看法处于中等关注水平,其关注值为37.97,其中村民对参与制定村庄森林法的关注度很高,平均值为3.50,村民对社会经济现状的关注居于中等水平,平均值为20.93,其中社会经济现状为当地社区及村民家庭带来的收益处于非常关注的水平,其平均值分别为3.40和3.41。
[Abstract]:The main goal of this paper is to study the land use and land cover change in the PhouKhaoKhouay national protection area from 1999 to 2014. The purpose of this paper is to study the land use and land cover change in the Vien of the Lao Democratic Republic. The village of Vanghua in Thoulakhom district of tiane province is an example. Based on the method of questionnaire, this paper studies the views of local villagers on land use change, and studies the dynamics of land use and land cover by using remote sensing technology and geographic information system (GIS) technology. Remote sensing image data used include the Landsat 5 thematic mapping instrument in 1999. 2006 Landsat 7 enhanced thematic mapping instrument and 2014 Landsat 8 operating land image. Classification of land use and land cover map using supervised classification method. Based on this method, Landsat images can be divided into 9 categories. At the same time, the ground survey is carried out, and the data obtained are used to correct the evaluation results obtained by GIS and RS. The overall accuracy of the evaluation results was calculated. The results showed that the forest cover of the study area showed a downward trend from 1999 to 2014. However, there was a rapid decrease in forest cover from 1999 to 2006, with a total decrease of 1.11% for evergreen forests, broad-leaved mixed forests and shrubs during the study period. From 2006 to 2014, the forest coverage increased by 0.55 and 0.55 (mainly evergreen forest and broad-leaved mixed forest), on the contrary, the area of artificial forest and water body increased by 0.28% and 1.83.From 2006 to 2014, the forest coverage increased by 0.55% (mainly evergreen forest and broadleaved mixed forest). The reduction of agricultural land was mainly used to restore shrub area and natural secondary forest. Based on the revision of ground survey results, the overall accuracy rate of estimating the results based on GIS and RS was 822.The local villagers were concerned with forest resources. In the study of forest management organizations and social and economic status, a total of 221 households were selected to conduct a questionnaire survey. The results of the questionnaire were analyzed, counted and calculated percentage by Microsoft office system Excel. The results showed that the average value of the local villagers' views on the importance of forest resources including 9 kinds of forest activities was 31.36, which was at a significant level. One of the activities with the highest average value is the importance of forest in natural education, with an average value of 3.66.The villagers' views on forest resource management regulations are at a medium level of concern, with a concern value of 37.97. Villagers involved in the development of village forest law is very high, the average value is 3.50, the villagers' attention to the social and economic status is in the middle level, the average is 20.93. Among them, the social and economic status of the local community and the income of villagers' families is in a very concerned level, its average value is 3.40 and 3.41 respectively.
【学位授予单位】：北京林业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：F301.2;S126

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