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首页> 外文期刊>Environment and Planning B: Urban Analytics and City Science >Impact of ecological security on urban sustainability in Western China-A case study of Xi'an
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Impact of ecological security on urban sustainability in Western China-A case study of Xi'an

机译：生态安全对中国西部城市可持续发展的影响 - 以西安为例

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摘要

China has experienced rapid urbanization for over 40 years, posing a significant challenge to the ecological environment and urban sustainability, which is especially critical in cities in Western China. To critically measure the impact of ecological security on urban sustainability, we developed a quantitative approach to obtain evaluation results for decision-making. Taking Xi’an, one of the central cities in Western China, as an example, we used the methodology to conduct a quantitative analysis of the impact of regional ecological security on urban sustainability. The driving force–pressure–state–response framework has been used to construct a comprehensive assessment system and the distribution of ecological security index was analyzed using Geographic Information System (GIS) software. To understand the level of urban ecological security, the natural breaks classification method was adopted to divide the results into five categories: highly safe, satisfactorily safe, safe, low value safe, unsafe. The results have shown that the ecological security in Xi’an is basically stable, and the overall status is close to the safe status, but there is a significant difference within the research area. According to the assessment results, the impact of ecological security on sustainability of Xi’an is mainly concerning high-density population, high-density water consumption, high per capita energy consumption, low vegetation coverage, and low-density river corridors. In addition, through the quantitative analysis of the relationship between ecological security and terrain, it is observed that the ecological security level distribution of Xi’an decreases from mountains to tablelands to hills and plains. The paper shows that the comprehensive assessment system of urban ecological security established here is effective to identify natural and artificial ecological security factors that threaten urban sustainability.
机译：中国经历了40多年的迅速城市化，对生态环境和城市可持续发展构成了重大挑战，这在中国西部的城市尤其重要。为了批判性地衡量生态安全对城市​​可持续性的影响，我们开发了一种定量方法，以获得决策的评价结果​​。以西部的中部城市为例，以西安为例，我们利用该方法对区域生态安全对城市​​可持续性的影响进行定量分析。驱动力 - 压力 - 状态响应框架已被用于构建综合评估系统，并使用地理信息系统（GIS）软件分析生态安全指数的分布。要了解城市生态安全水平，采用自然破解分类方法将结果分为五类：高度安全，令人满意的安全，安全，低价值安全，不安全。结果表明，西安的生态安全基本稳定，整体地位接近安全地位，但研究领域存在显着差异。根据评估结果，生态安全对西安可持续性的影响主要有关高密度人口，高密度耗水，高人均能源消耗，低植被覆盖率和低密度河流走廊。此外，通过定量分析生态安全与地形之间的关系，据观察，西安生态安全水平分布从山区到山丘和平原的高原。本文展示，这里建立的城市生态安全综合评估系统有效地识别威胁城市可持续性的自然和人工生态安全因素。

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