海南省东方市景观格局分析

发布时间：2018-06-04 11:03

本文选题：景观格局 + 粒度效应　；参考：《中南林业科技大学》2015年硕士论文

【摘要】：景观格局是以不同景观类型的相互作用为主要目的,改善区域生态环境为目标。本论文以海南省东方市为研究区,利用面积信息守恒法、移动窗口法和景观稳定性评价模型,分析海南省东方市景观格局,并提出相应的景观优化调整的方案和建议,实现区域可持续发展。研究结果表明：1)东方市乔木林地和农用地为优势景观地类,分布较为广泛；建筑用地和其他用地为劣势景观地类,分布较为集中。2)依据粒度效应分析和面积信息损失精度分析可得,海南省东方市景观适宜粒度为90m,粒度效应分析结论可用于移动窗口的选取,即按所分析的粒度的(4n+1)倍来作为备选窗口尺度,既能保证该尺度下所反映的研究区范围内生态景观信息与实地观察结果保持一致,又能保证计算机进行分析运算时的效率。3)依据移动窗口法分析可得,2610m窗口尺度为分析海南省东方市景观适宜分析尺度,该尺度下景观指数变化浮动较为平滑,能较好的反映研究区内的景观格局现状。4)依据景观稳定性空间差值分析可得,东方市景观稳定性空间分布状况,结果表明东方市生态环境整体状态良好,其中景观稳定区主要分布于西南部,该区域主要为大面积的乔木林地,林种以天然阔叶混交林为主；中度稳定区主要分布于东方市的陀兴水库和大广坝水库周边,该区域主要以乔木林为主,农用地和水域交叉分布；一般稳定区主要分布于感恩河、南清河和大安水库附近,该区域主要以乔木林地和农用地为主,水域零星分布；一般不稳定区主要分布城镇和村庄,该区域主要以建设用地和其他用地为主,生态环境受人类活动的影响,发生重大变化；十分不稳定区主要分布区四更镇、新龙镇、抱板镇和东方市市区,该区域主要是建设用地和其他用地,生态环境遭受高强度人为改造,破坏严重。5)东方市应采取退耕还林、退耕还湖、植树造林等措施,调整区域内建设用地、农用地和其他用地的景观比重,提升乔木林地和红树林地的景观质量,优化东方市的景观结构,改善生态环境,促进生态效益和经济效益共同增长,实现东方市的可持续发展。
[Abstract]:Landscape pattern is aimed at the interaction of different landscape types and the improvement of regional ecological environment. This paper takes Dongfang City, Hainan Province as the research area, uses area information conservation method, moving window method and landscape stability evaluation model, analyzes the landscape pattern of Dongfang City, Hainan Province, and puts forward the corresponding scheme and suggestion of landscape optimization adjustment. To realize regional sustainable development. The results show that tree woodland and agricultural land are the dominant landscape land in Dongfang city, and the construction land and other land use are the inferior landscape land. According to the granularity effect analysis and area information loss precision analysis, the suitable granularity of Dongfang landscape in Hainan Province is 90 m, and the conclusion of granularity effect analysis can be used to select moving window. That is to say, using 4n 1 times of the size analyzed as an alternative window scale, it can ensure that the ecological landscape information reflected in the study area under this scale is consistent with the field observation results. It can also ensure the efficiency of computer analysis. 3) according to the moving window method, we can get the suitable analysis scale of 2610m window for the analysis of landscape in Dongfang City, Hainan Province, under which the fluctuation of landscape index is relatively smooth. According to the spatial difference analysis of landscape stability, the spatial distribution of landscape stability in Dongfang City is obtained. The results show that the overall ecological environment of Dongfang City is in good condition. The landscape stabilization area is mainly distributed in the southwest, and the forest species are mainly natural broad-leaved mixed forests, while the moderate stable areas are mainly distributed around the Tuoxing Reservoir and the Daguangba Reservoir in Dongfang City. In this area, Arbor forest is the main area, agricultural land and water area are intersected, the general stable area is mainly located near the Thanksgiving River, Nanqing River and Da'an Reservoir, and the area is dominated by Arbor woodland and agricultural land, and the waters are scattered. In general, unstable areas are mainly distributed in towns and villages. The main areas in this area are construction land and other land uses. The ecological environment is affected by human activities and has undergone major changes. Huabanzhen and Dongfang urban areas, which are mainly used for construction and other land use, the ecological environment suffered high intensity artificial transformation, serious damage. 5) Dongfang City should take measures such as returning farmland to forest, returning farmland to lakes, planting trees and afforestation, etc. Adjust the landscape proportion of construction land, agricultural land and other land in the region, improve the landscape quality of forest land and mangrove land, optimize the landscape structure of Dongfang City, improve the ecological environment, and promote the common growth of ecological benefits and economic benefits. To realize the sustainable development of Dongfang City.
【学位授予单位】：中南林业科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P901

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