An ecological security early warning simulation city based on the CA Model in Huaxi District of Guiyang City, China
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摘要: 基于生态安全理论和景观生态理论,以贵阳市花溪区为研究对象,以专题绘图仪(TM)遥感影像为主要数据源,结合花溪区社会经济统计数据、数字高程模型(DEM)数据、交通数据及部分地貌指标如坡度等数据,选取景观破碎度、景观分离度、景观优势度及景观脆弱度4个核心景观指数构建生态安全预警指数,从景观视角对花溪区进行生态安全预警评价研究。在此基础上,运用元胞自动机(CA)模型对花溪区进行了生态安全预警模拟。结果显示:2020年花溪区生态安全预警模拟指数为2.36,2030年警度略有上升,由2.36上升到2.50,表明研究时段花溪区生态安全受到威胁增加,生态安全状况呈不良的变化趋势,通过对2000年和2010年2个时段的检验,模拟精度达到90%以上。图2表1参21
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关键词:
- 生态学 /
- 生态安全预警指数 /
- 元胞自动机(CA)模型 /
- 贵阳市
Abstract: Ecological security early warning refers to forecasting, analyzing, and evaluating the influence of human activities, such as construction, resource development, on the ecological environment and helps to determine trends and speed of change in regional ecological and environmental ecosystems. To provide reference materials for rational land use, regional urbanization, and ecological development for Huaxi District in Guiyang City, an ecological security early warning system was designed that combined ecological security and landscape ecology theories. Using inspection data from 2000 and 2010, Thematic Mapper (TM) images, the main data source, were combined with statistical data from socio-economic, demographic, traffic, and slopes of Huaxi District. Employing landscape fragmentation, isolation, dominance, and vulnerability, an ecological security warning index was developed for an ecological security early warning simulation that incorporated remote sensing (RS) and graphical information systems (GIS). Results showed an ecological security situation that was in a state of flux with no pattern of change. With accuracy above 90%, the ecological security warning index simulation value was 2.36 in 2020 rising to 2.50 in 2030 meaning a deterioration in ecological security. Thus, this study could provide information to help maintain ecological security and to avoid ecological risk during industrialization and urbanization of Huaxi District.[Ch, 2 fig. 1 tab. 21 ref.]-
Key words:
- ecology /
- ecological security warning index /
- CA Model /
- Guiyang City
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.03.006
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