基于空间格局的城市热环境生态安全评价

发布时间：2019-01-13 08:01

【摘要】：伴随着我国城市化进程的加快,城市热岛现象成为了城市生态环境问题的突出表现之一。应用遥感和GIS技术以及景观生态理论,对研究区进行了城市热环境生态安全评价研究。研究结果表明:武汉市城市生态安全危险等级从外向内呈现出逐渐增高的趋势,并且因为城市下垫面的复杂造成了生态安全空间上的交错分布。在今后的城市规划与管理过程中,需加强城市景观的生态建设与保护管理,重点布局优化生态安全较低与生态系统服务缺失地区的生态结构,加强保护城市景观生态安全度较高,生态系统服务价值较高的地区。对整个城市生态景观格局具有很好的支撑与供养作用的林地与农用地,应该推行增加植被盖度的措施,并且逐步消除不安全环境问题隐患,促进城市生态环境向良好的方向优化与发展。
[Abstract]:With the acceleration of urbanization in China, the phenomenon of urban heat island has become one of the prominent problems of urban ecological environment. Based on remote sensing, GIS technology and landscape ecology theory, the ecological security evaluation of urban thermal environment was carried out in the study area. The results show that the danger level of urban ecological security in Wuhan is gradually increasing from outside to inside, and the ecotone distribution in ecological security space is caused by the complexity of the underlying surface of the city. In the process of urban planning and management, it is necessary to strengthen the ecological construction and protection management of urban landscape, and to optimize the ecological structure of areas with low ecological security and lack of ecosystem services. Strengthen the protection of urban landscape ecological security degree is higher, ecosystem service value higher area. Forestland and agricultural land, which have a good supporting and supporting function to the whole urban ecological landscape pattern, should carry out measures to increase vegetation coverage, and gradually eliminate the hidden dangers of unsafe environment. To promote the urban ecological environment to a good direction of optimization and development.
【作者单位】：首都经济贸易大学城市经济与公共管理学院;武汉大学资源与环境科学学院;
【基金】：国家社会科学基金(14CGL054) 博士后特别资助基金(2014T70161) 国土资源部资源环境承载力评价重点实验室开放基金(CCA201509)
【分类号】：X16;X826

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