基于多源大数据的防洪保护区当量经济规模快速精准获取方法

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中图分类号：TV211 文献标识码：A 文章编号：1001-9235（2025）08-0001-12

Rapid and Accurate Acquisition of Equivalent Economic Scale in Flood Protection Area Based on Multi-sourceBigData

ZHENG Yong  XU Zhangfan ZHOU Xiaoxin CAI Jihong JIHongxiang   QIN Yan 1，2，3 （20

Guangdong Research InstituteofWaterResourcesandHydropower，Guangzhou510635，China;2.Guangdong ProvincialKey

LaboratoryofHydrodynamicsResearch，Guangzhou50635，China;GuangdongProvincialcienceandTechologyColabatie Innovation Centerfor Water Safety，Guangzhou 51O635， China）

Abstract：Theequivalenteconomicscaleisanimportantindicatorfordetermiingthefloodprotectionstandard inurbanprotection areas.Itsaccuracydependsontheestimated populationand grossdomesticproduct（GDP）of theflood protectionarea.This study integratesmulti-sourebigdata，includingbuilding height，urbanpoint-of-terest（POl）data，andpopulationcensusdata，tobuild randomforestalgorithmmodelsofpopulationandGDP，forming1OO-metergriddatasetsofpopulationandGDPfortheGreaterBay AreaandachievingtherapidacquisitionofequivalenteconomicscaleforflodprotectionareasTheresultsshowthattheaccuracyof the population prediction model is 82% ，and the accuracy of the GDP prediction model is 76% .Compared with the public population andGDPdatasets，the1OO-metergriddatasetsofthisstudyhavehigherspatialresolutionandcanbeterreflectthespatial distributiondetailsofthedata.Thepropsedmethodprovidesadataprocessingexampleforfingrainedevaluation，whichcanbe extendedtofingraedspatializatiofvarosfloodskidcators，mprovingtauacyndelabilityoftaditioaldisask assessment methods.

Keywords： equivalent economic scale; flood protection area; multi-source big data; random fores

城市是中国经济社会发展的重地，人口稠密、财富集中，一遇洪水，所造成的损失往往难以弥补。（剩余10847字）