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A climatic environmental performance assessment method for ecological city construction:Application to Beijing Yanqi Lake

机译:生态城市建设的气候环境绩效评价方法:在北京雁栖湖的应用

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摘要

In contrast to the input perspective for evaluating planning metrics, this research takes the climatic environmental output effects as the starting point for assessing ecological city construction. Based on approaches such as observation data analysis, meteorological model simu-lation, and remote sensing, a set of climatic environmental performance assessment methods is developed and established. These methods mainly focus on surface ventilation assessment and urban thermal environment assessment. With the Yanqi Lake ecological development demonstration area located in Huairou district, Beijing as an example, the assessment of the local climatic environment before and after the construction are conducted, and relevant policy suggestions for urban planning and construction are presented. The results show that after development, the ventilation capacity will decrease overall and the ventilation potential index will decrease from 0.53 to 0.44. While this is not a large reduction, and is still at a favorable level, the ventilation potential in some local areas will markedly decrease. Furthermore, the thermal environment will become poorer to some extent;the urban heat island (UHI) area and intensity will increase compared with the current situation;continuous heat islands may occur in local areas;the UHI potential index of the core area will rise from 0.0878 to 0.1217 (still a favorable level). Therefore, urban surfaces should be carefully developed and arranged during planning. It is suggested that the negative impacts of large areas of urban construction on the local climatic environment in the Yanqi Lake could be mitigated by 1) strengthening the airflow by introducing fresh, cold, northwesterly air via constructed ventilation corridors, 2) increasing the number of ecological cold sources, particularly for water bodies and green belts to prevent the UHI in the southern region of Yanqi Lake from becoming linked with each other, and 3) considering a pre-program before sub-domain and building planning to obtain optimum building locations. Different construction standards should be developed for different ventilation potential and UHI intensity levels. For strong heat island areas, land areas should be reserved to serve as cold sources.
机译:与评估规划指标的输入视角相反,本研究以气候环境产出效应为评估生态城市建设的起点。基于观测数据分析,气象模型模拟和遥感等方法,开发并建立了一套气候环境绩效评价方法。这些方法主要集中在地面通风评估和城市热环境评估。以北京市怀柔区雁栖湖生态开发示范区为例,对建设前后的当地气候环境进行了评估,并提出了有关城市规划建设的政策建议。结果表明,开发后,通风量总体下降,通风势指数从0.53下降到0.44。虽然这不是一个很大的减少,但仍处于一个良好的水平,但某些局部区域的通风潜力将显着下降。此外,热环境将在一定程度上变差;与当前情况相比,城市热岛(UHI)的面积和强度将增加;局部地区可能会出现连续的热岛;核心地区的UHI潜力指数将从0.0878至0.1217(仍处于有利水平)。因此,在规划过程中应仔细开发和布置城市表面。建议通过以下方式缓解大面积城市建设对Yan栖湖当地气候环境的不利影响:1)通过建造通风通道引入新鲜,寒冷,西北风来增强气流,2)增加生态冷源,特别是用于水体和绿化带的冷源,以防止Yan其湖南部地区的UHI相互联系,以及3)考虑在子域和建筑物规划之前进行预先规划以获得最佳建筑物位置。应针对不同的通风潜力和UHI强度水平制定不同的施工标准。对于强热岛地区,应保留陆地区域以用作冷源。

著录项

  • 来源
    《气候变化研究进展(英文版)》 |2015年第1期|23-35|共13页
  • 作者单位

    Beijing Municipal Climate Center, Beijing 100089, China;

    Beijing Municipal Climate Center, Beijing 100089, China;

    Beijing Municipal Climate Center, Beijing 100089, China;

    Beijing Municipal Climate Center, Beijing 100089, China;

    Beijing Institute of Architectural Design, Beijing 100045, China;

    Beijing Municipal Climate Center, Beijing 100089, China;

  • 收录信息 中国科学引文数据库(CSCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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  • 入库时间 2022-08-19 03:58:04
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