雄安新区生态系统热消减功能研究

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 雄安新区生态系统热消减功能研究 DOI: 10.5846/stxb202105311433 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 中国环境科学研究院中央公益性科研院所基本科研业务专项（2018-改革启动-003） Research on reducing heat function of ecosystem in Xiong'an New Area Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:雄安新区作为国家确立不久的新区，建设绿色生态宜居新城区是其重大规划目标之一。近几年城市化进程加快，城市面貌变化大，城市热岛效应愈发严重，而城市生态系统中的蓝绿空间能够提供温度调节功能，消减并改善城市热环境。基于Landsat遥感数据和土地利用数据，分析生态斑块的降温效益并模拟了雄安新区生态系统的热消减功能。结果表明：（1）雄安新区各类绿地中园地和其他林地的降温距离最大，为300 m，降温幅度分别为0.79℃和0.62℃；各类水体中湖泊的降温距离最大，为350 m，降温幅度为1.29℃。（2）不同生态斑块温度与景观格局指数有一定的相关性，其中相关性较强的有面积、周长、周长面积比和最小邻近距离指数，且不同类型斑块有不同的景观格局指数阈值，在阈值范围内温度呈下降趋势，城市蓝绿空间规划建设过程中可以参考各生态斑块的景观格局指数阈值开展工作。（3）雄安新区生态系统的热消减量在0.4-5.63℃之间，热消减能力突出的区域主要集中在白洋淀附近，其中湖泊发挥的作用最强，其次为分布在建成区的部分林地和草地，河渠的热消减能力相对较低，热消减能力最弱的是分布在雄安新区北边建成区的少量草地和林地。 Abstract:Xiong'an New Area, as a newly established area in China, is a major goal of planning to build a new, green, eco-friendly and livable urban area. In recent years, the urbanization process of Xiong'an New Area has accelerated, the urban landscape has changed greatly, and the urban heat island effect has become more and more serious. The blue-green space in the urban ecosystem can provide the temperature regulation function to improve urban thermal environment. Based on Landsat remote sensing data and land use data, this paper analyzed the cooling benefits of ecological patches and simulated the reducing heat function of the ecosystem in Xiong'an New Area. The results showed that:(1) in Xiong'an New Area, the cooling distance of lakes is the largest, which is 350 meters, and the cooling range is 1.29℃. In the green land, the cooling distance of woodlands and gardens is the largest, which is 300 meters, and the cooling range is 0.79℃ and 0.62℃. (2) There was a certain correlation between different ecological patch temperatures and landscape pattern indexes, among which area (AERA), perimeter (PERIM), perimeter area ratio (PARA) and Euclidean nearest neighbor distance (ENN) index were strongly correlated. differently ecological patch types have different thresholds, within which the temperature decreases. In the process of urban blue-green space planning, the cooling threshold of each ecological patch can be referred to for construction. (3) The heat reduction of Xiong'an New Area is between 0.4℃ and 5.63℃. The maximum reducing heat function of areas mainly distributed in the Baiyang Lake, where the lakes play the most important role and followed by the part of woodland and grassland in built-up area. The reducing heat ability of the river channels is relatively low, and the weakest is a few grasslands and woodlands that are distributed in the northern built-up area of Xiong'an New Area. 参考文献 相似文献 引证文献