[1]ZOU Xinyi,ZHAO Wei,PU Haixia,et al.Study on Urban Boundary Expansion and Ecological Environment Effect in Nan’an District of Chongqing City[J].Research of Soil and Water Conservation,2019,26(04):252-258,264.
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Study on Urban Boundary Expansion and Ecological Environment Effect in Nan’an District of Chongqing City
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 04
Page number:
252-258,264
Column:
Public date:
2019-06-11
- Title:
- Study on Urban Boundary Expansion and Ecological Environment Effect in Nan’an District of Chongqing City
- Keywords:
- urban expansion; ecological environment; DPSR
- CLC:
- X321;F291
- DOI:
- -
- Abstract:
- Taking Nan’an District of Chongqing City as the research site, combining the diversity and complexity between urban expansion, socio-economic development and ecological environment, based on the study of the number and form of expansion of built-up areas in Nan’an District from 1996 to 2016, we use the improved DPSR model DPSR integrated ecological assessment model to quantitatively evaluate the ecological environment effects of urban land expansion, and identify the main influencing factors of urban land expansion system and ecological environment system, and investigate the eco-environmental effects of urban expansion from the perspective of small scale, system and dynamics in order to provide scientific support for optimizing urban spatial development model and promoting the coordinated and sustainable development of urban social ecology. The area of construction area in Nan’an District increased from 33.03 km2 in 1996 to 122.39 km2 in 2016. and it had developed from the initial single-centric continuum in the west to the state of the west cluster area, and the small dispersion area to the east of Tongluo, and the urban boundary had expanded significantly; from 2000 to 2016, the eco-environment effect of Nan’an District was at a medium level, and the comprehensive index rose from 0.36 to 0.6, but the rising intensity presented the decreasing trend. The increases in the proportion of non-agricultural population and economic development are important factors affecting the eco-environmental index. Construction land expansion and other indicators have a negative impact on the eco-environment.
- References:
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1900-01-01