热带地理2025，Vol.45Issue(4)：660-672,13.DOI:10.13284/j.cnki.rddl.20240779
粤港澳大湾区城市群自然灾害危险性区划与对策
Natural Disaster Regionalization and Countermeasures in the Guangdong-Hong Kong-Macao Greater Bay Area Urban Agglomeration
摘要
Abstract
In the context of global climate change,natural disasters pose increasingly serious threats to the Guangdong-Hong Kong-Macao Greater Bay Area.Therefore,in this study,we aimed to conduct integrated comprehensive zoning of natural disasters and to develop disaster prevention and mitigation countermeasures for the Greater Bay Area.To achieve this objective,we first carried out geomorphological division of the Greater Bay Area based on the land geomorphological classification system.Second,we performed comprehensive zoning of natural disasters according to the intensity of dominant natural disasters in various geomorphological units.Finally,we conducted risk zoning of natural disasters according to the main controlling factors of natural disasters in each zoning units.Based on the geomorphology of the Greater Bay Area and the risk of natural disasters,we proposed natural disaster prevention and mitigation countermeasures.The results show that:(1)The landform of the Greater Bay Area can be divided into four major first-class divisions:mountains,hills,platforms and plains.The landforms of the Greater Bay Area can be divided into 10 secondary subdivisions,including medium-altitude small undulating mountains,low-altitude small undulating mountains,low-altitude erosion and denudation hills,low-altitude erosion and denudation platforms,low-altitude alluvial platforms,low-altitude alluvial flood platforms,low-altitude alluvial plains,low-altitude marine plains,low-altitude marine alluvial plains,and low-altitude estuarine coasts.Among these subdivisions,low-altitude small undulating mountains represent the largest area(21,618.28 km2),while low-altitude erosion and denudation platforms represent the smallest area(849.77 km2).(2)The Greater Bay Area can be divided into three first-level major disaster subdivisions:mountain and hill disaster areas(52.77%),plain and platform disaster areas(40.43%),and estuary and coast disaster areas(6.80%).(3)The Greater Bay Area can be further divided into second-level disaster subdivisions,including the small undulating and low-altitude mountain disaster area,low-altitude alluvial plain land subsidence area,low-altitude plain and platform flood area,and 14 others.The largest second-level disaster subdivision area is the small undulating low-altitude mountain disaster area(20,892.18 km2),which is distributed in the east,north,and west of the Greater Bay Area,followed by the low-altitude plain and platform flood disaster area(13,320.98 km2),which is mainly distributed in Guangzhou,Jiangmen,Shenzhen,Huizhou,and Zhaoqing cities,among other areas.The karst collapse area of the low-altitude platform represents the smallest second-level disaster subdivision(163.62 km2)and is mainly distributed in some areas of Enping and Jiangmen cities.(4)The natural disaster risk in the Greater Bay Area can be divided into high-risk,medium-risk,and low-risk areas.The high-risk areas for mountain disasters are mainly in Deqing,Huaiji,and Guangning of Zhaoqing City;and Conghua District in the north of Guangzhou City,Longmen,Boluo,and other regions in Huizhou City.The high-risk areas for plain and platform disasters are mainly in Doumen District,Zhuhai City,Guanghua Basin,Huadu District,Nansha District,Guangzhou City,Foshan City,and other regions.The high-risk areas for estuary and coast disasters are mainly in Doumen District,Zhuhai City,and near the mouth of the Pearl River Delta.In this study,we proposed disaster prevention and mitigation countermeasures for natural disasters in the Greater Bay Area from four perspectives.Our results serve as a valuable reference for the Greater Bay Area urban agglomeration in regional development planning,comprehensive disaster reduction planning,and the improvement of disaster prevention and mitigation capabilities.关键词
地貌区划/危险性区划/自然灾害综合区划/防灾对策/粤港澳大湾区Key words
geomorphological zoning/hazard zoning/comprehensive natural disaster zoning/disaster prevention countermeasures/Guangdong-Hong Kong-Macao Greater Bay Area分类
安全科学引用本文复制引用
王钧,王祥林,宫清华,袁少雄,刘博文..粤港澳大湾区城市群自然灾害危险性区划与对策[J].热带地理,2025,45(4):660-672,13.基金项目
广东省自然科学基金-青年提升项目(2024A1515030114) （2024A1515030114）
国家自然科学基金项目(42271091、42101084) （42271091、42101084）
