Geographical Research, Volume. 39, Issue 7, 1534(2020)

Characteristics of urban extreme heat and assessment of social vulnerability in China

Xiaojun HUANG1,2,3,4、*, Bo WANG1, Mengmeng LIU1, Yuhui GUO1, and Yanyu LI1
Author Affiliations
  • 1College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
  • 2Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Xi’an 710127, China
  • 3Institute of Earth Surface System and Hazards, Northwest University, Xi’an 710127, China
  • 4Shaanxi Xi’an Urban Forest Ecosystem Research Station, Xi’an 710127, China
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    Figures & Tables(12)
    Distribution of main cities and national meteorological stations in China
    The analytical framework of urban social vulnerability to heat wave
    Days of urban high temperature in China from 1960 to 2016
    Frequency of urban heat waves in China from 1960 to 2016
    Duration of urban heat wave in China from 1960 to 2016
    Urban high temperature and heat wave intensity in China from 1960 to 2016
    The index distribution of exposure, sensitivity, adaptive capacity and social vulnerability to heat wave in China
    The types and index contribution degree of urban social vulnerability to heat wave
    Distribution of urban social vulnerability types to heat wave in China
    • Table 1. Index of urban high temperature and heat wave

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      Table 1. Index of urban high temperature and heat wave

      高温指标单位指标释义
      高温日数日最高气温≥ 35℃的天数
      高温强度高温日(≥ 35℃)的最高气温平均值
      热浪频次高温热浪事件(连续3天≥ 35℃)发生的次数
      热浪持续时间高温热浪过程持续的总天数
      热浪强度高温热浪过程中日最高气温超过高温阈值(35℃)的累积数(气温累积值)
    • Table 2. Evaluation index system of urban social vulnerability to heat wave

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      Table 2. Evaluation index system of urban social vulnerability to heat wave

      目标层维度层指标层指标权重指标释义
      高温社会脆弱性暴露度高温日数(天)0.1706日最高气温≥ 35℃的天数
      高温强度(℃)0.0179高温日的最高气温的平均值
      热浪频次(次)0.1841高温热浪事件发生的次数
      热浪持续时间(天)0.2314高温热浪过程持续的总天数
      热浪强度(℃)0.3050热浪过程中日最高气温≥ 35℃的气温累积数
      常住人口(万人)0.0910暴露于极端高温的人口规模
      敏感性5岁以下人口比例(%)0.1782反映儿童的敏感特征
      65岁以上人口比例(%)0.1178反映老年人口的敏感特征
      建筑业从业人口比例(%)0.7040反映户外工作人员的敏感特征
      适应能力初中以上学历人口比例(%)0.0964人口高温认知水平和应对能力的替代指标
      居民家庭人均可支配收入(元)0.0350家庭是否有降温设备及其数量的替代指标
      失业率(%)0.0157家庭是否有降温设备及其数量的替代指标
      每万人病床数(张)0.0647应对高温灾害健康保障水平的替代指标
      每万人医生数量(人)0.1198应对高温灾害健康保障水平的替代指标
      移动电话用户比例(%)0.0503人口获取高温预警信息能力的替代指标
      住房内有洗澡设施户比例(%)0.1397家庭是否有降温设施的替代指标
      人均供水量(m30.1913城市应对高温的设施水平的替代指标
      人均绿地面积(m20.2871城市应对高温的设施水平的替代指标
    • Table 3. Average contribution of three indexes of different social vulnerable cities

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      Table 3. Average contribution of three indexes of different social vulnerable cities

      脆弱性城市类型暴露度指数贡献度均值敏感性指数贡献度均值适应能力指数贡献度均值
      高社会脆弱性城市47.5339.6712.80
      中社会脆弱性城市37.6640.2422.10
      低社会脆弱性城市30.2839.3730.35
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    Xiaojun HUANG, Bo WANG, Mengmeng LIU, Yuhui GUO, Yanyu LI. Characteristics of urban extreme heat and assessment of social vulnerability in China[J]. Geographical Research, 2020, 39(7): 1534

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    Paper Information

    Received: Jul. 18, 2019

    Accepted: --

    Published Online: Apr. 23, 2021

    The Author Email:

    DOI:10.11821/dlyj020190608

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