基于三生用地变化的福州中心城区景观生态风险研究
首发时间:2021-02-22
摘要:研究福州市中心城区土地利用变化带来的景观生态风险的时空变化和演变规律,为福州城市健康可持续发展提供借鉴。按照"三生用地"土地利用分类,应用GIS、Fragstats、GeoDa等软件辅助,以福州中心城区为例,基于2000、2009和2015年三期遥感影像提取土地利用数据,分析2000-2015年间,福州中心城区景观格局变化对景观生态风险的影响。(1)2000-2015年福州中心城区景观以林业生态用地为主,景观格局变化主要体现在城乡生活用地对农业生产用地的侵占上。(2)景观生态风险的空间布局变化较大,中高风险向中风险、中低风险转变较多,生态风险高的地区多离主城区较远的边缘山区,地类较为破碎,主城区为成片的城乡生活用地,地类整合度高,生态风险较低。(3)研究区的生态风险有较高的空间自相关性,高-高聚集和低-低聚集的地区与高生态风险区、低生态风险区的分布范围有较高的一致性。福州中心城区景观生态风险总体上呈现好转趋势,在城市规划的过程中要注意城市与生态环境的协调发展。?????
关键词: 景观生态风险;三生用地;土地利用变化;福州中心城区
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Study on Landscape Ecological Risk of Fuzhou central city based on production-living-ecological
Abstract:Study the spatial-temporal changes and evolution of landscape ecological risks caused by land use changes in Fuzhou central city which can provide a reference for the healthy and sustainable development of Fuzhou.Take Fuzhou central city as the research object,the landscape data of the 2000, 2009 and 2015 remote sensing images were extracted. According to the land use classification of "production-living-ecological". Using GIS, Fragstats, GeoDa and other software to assist the analysis of the impact of landscape pattern changes on landscape ecological risk in Fuzhou central urban area from 2000 to 2015.The results show that the landscape type in Fuzhou central city is forestry ecological land in 2000-2015.The change of landscape pattern is mainly reflected in the occupation of agricultural production land by urban and rural living land. The spatial layout of landscape ecological risk has changed greatly: medium-high risk has changed more to medium risk and medium-low risk. High ecological located in the edge mountainous area with more broken landscape types which far from the main urban area .Urban area is used for urban and rural life place which has high level of land integration.The ecological risk of the study area has a high spatial auto correlation,such as the high-high clusters and the low-low clusters have high consistency with high ecological risk areas and low ecological risk areas. Fuzhou central city landscape ecological risks are generally improving. In the process of urban planning, we must pay attention to the coordinated development of the city and the ecological environment.?????
Keywords: ?landscape ecological risk production-living-ecological Land use change Fuzhou Central City???
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基于三生用地变化的福州中心城区景观生态风险研究
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