基于房屋承灾体的河北省暴雨孕灾环境地理分区
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河北省科技厅重点研发项目(19275408D)资助


Geographical Division of Rainstorm Disaster-Inducing Environment in Hebei Province Based on Hazard-Affected Houses
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    摘要:

    利用河北省1984—2014年各县市暴雨洪涝灾情案例,统计分析了暴雨导致房屋损坏的时空分布特征。以房屋为承灾体,选取土地利用类型、地形和居民地等地理要素作为指标,基于Kmean聚类分析法对河北省暴雨孕灾环境条件进行分区。结果表明:①1984—2014年,暴雨导致房屋损失间数与灾情案例5日累积降水总和的逐年变化趋势基本一致。房屋受损灾情次数总体呈现北多南少的特征。②草地主要分布在太行山〖CD*2〗燕山山脉,林地主要在承德、张家口东南部、保定西部和石家庄西部,东南部平原的农用地占比在0.8以上,水域在冀东沿海、张北和沽源以及西部大清河水系的占比较大。冀北高原和太行山-燕山山脉地形起伏较大,区域标准差在100 m以上。居民地密度自西北向东南逐渐增大,平原的市辖区附近居民地密集。③Ⅰ区为临海平原区,易受强降水影响;Ⅱ区为山前平原区,草地、林地有所增加;Ⅳ区(西部低山区)农用地比重比Ⅲ区(北部高山区)大;Ⅴ区为内陆平原区,降水较少。

    Abstract:

    Based on the cases of rainstorms and flood disasters in Hebei Province from 1984 to 2014, the spatial and temporal distribution characteristics of damaged houses caused by rainstorms are analyzed. Taking houses as the disasterbearing body, geographical elements such as land use type, topography and residential area are selected as zoning indicators. The disasterinducing environment of rainstorm disasters in Hebei Province is divided based on the Kmeans clustering analysis method. The results show that the change in house losses caused by rainstorms from 1984 to 2014 is basically consistent with the total fiveday precipitation. The frequency of damages to houses is generally higher in the north and fewer in the south. Among the environmental factors related to land use type, grassland is mainly distributed in TaihangYanshan Mountains, and woodland is mainly in Chengde, Southeast Zhangjiakou, Western Baoding and Shijiazhuang. The proportion of agricultural land in the southeast plain is above 0.8. The water range in the eastern coastal area, Zhangbei, Guyuan, and western Daqing River, account for a larger proportion. The topography of the northern plateau and Taihang Yanshan Mountains undulates greatly, and the regional standard deviation is more than 100 m. The density of residential areas increases gradually from northwest to southeast. In the plain, there are dense residential areas near the urban districts. Area Ⅰ is the coastal plain area, which is easily affected by strong precipitation. Area Ⅱ is the piedmont plain area. Its grassland and woodland increase. The proportion of agricultural land in Area Ⅳ (low mountain area in the West) is larger than that in Area Ⅲ (high mountain area in the north). Area Ⅴ is the inland plain area with less precipitation.

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孙玉龙,李婷,王丽荣,张琪,赵铁松.基于房屋承灾体的河北省暴雨孕灾环境地理分区[J].气象科技,2023,51(2):269~278

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  • 收稿日期:2022-04-24
  • 定稿日期:2023-02-07
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  • 在线发布日期: 2023-04-27
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