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机构地区:[1]上海师范大学地理系,上海200234 [2]中山大学地理科学与规划学院,广州510275
出 处:《生态学报》2007年第1期260-269,共10页Acta Ecologica Sinica
基 金:上海市教委科研基金资助项目(03DQ28)~~
摘 要:借鉴流域研究的范例,根据上海市1987年、1995年和2003年3期Landsat5TM遥感影像记录的土地利用/覆被数据和有关的社会经济统计数据,运用RS和GIS技术在上海市中心西南城市边缘建立典型城市化样带。采用生态足迹法分析该样带内人类的生态供给与需求;提出一城市化区域人类生态过程的新研究方法,得出城市化过程中区域的人类生态质量指数与波动指数,并根据模型计算出的指数值,对样带区域总体及其中城乡区域在城市化中的人类生态状况进行了动态分析,以尝试对区域城市化中人类生态过程进行定量化研究。We study the relationship between human eco-processes and urbanization in a typical urbanization sample zone (TUSZ) in the southwestern fringe of downtown Shanghai. A data set consisting of land use/land cover (created using throe Landsat5 TM images of the area for 1987, 1995, and 2003) and additional socioeconomic statistics is created. To analyze the spatial-temporal dynamics of human ecological accommodation and consumption for the entire TUSZ and its urban and rural portions, we develop two new indices in this paper: human ecological quality index (IHEQ) and human ecological low, mainly due to a policy that concentrated on production consumption and economic value but ignored life consumption and environmental and social values. During this period of time, a great difference of IHEQ between the urban and rural portions can be observed. Second, from 1987 to 2003, a dramatic increase of IHEQ can be observed. The IHEF value, however, was low and the fluctuation in the urban portion was stronger than in rural areas. Third, IHEF value reaches the highest during the period from 1995 to 2003, suggesting an improved human ecological quality. Fourth, the period from 1995 to 2003 also saw a relatively low IHEQ with an IHEF value that was 70 times higher than previous stages. This implies that human ecology fluctuates dramatically, with high instability, reflecting an incompatible relationship between human being and environment, and a sustainable improvement of human ecological quality faces severe pressure. Finally, eco-processes suggest that human beings are compelled to adapt to the environmental change (including nature, society and economics). With the development of urbanization, suburban and rural residents will need to gradually accept an urban life style, and their ecological quality may improve synchronously. The difference between urban and rural areas will disappear when IHEQ for the rural areas reaches a threshold. Rural residents are subsequently forced to become a part of the urban syst
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