海洋测绘2026，Vol.46Issue(2)：34-38,5.DOI:10.3969/j.issn.1671-3044.2026.02.007
基于最优参数地理探测器的南通沉降成因分析
Analysis of land subsidence driving force in Nantong city based on geodetector with optimal parameters
摘要
Abstract
Aiming at the complex causes of land subsidence and insufficient quantification of driving mechanisms in coastal areas,this study takes Nantong City as a typical case.It uses SBAS-InSAR technology to extract the spatiotemporal characteristics of regional land subsidence from 2021 to 2023,integrates multi-source data,and applies the Optimal Parameters-based Geographical Detector(OPGD)model to analyze the main driving factors and their interactive effects.The results indicate that land subsidence in Nantong is mainly concentrated in coastal areas,with Rudong County experiencing the widest affected area;the annual average subsidence rate ranges from-14 to 13 mm/a,with the maximum subsidence rate reaches-138.31 mm/a.This area's land subsidence is driven by multiple factors,among which groundwater depth change being the dominant one.Factors such as building load,precipitation and land cover type exhibit significant enhanced interactions,confirming the coupled influence of human construction activities,hydrological conditions and resource utilization on land subsidence.关键词
SAR卫星遥感/合成孔径雷达干涉测量/沉降成因分析/最优参数地理探测器/因子探测Key words
SAR satellite remote sensing/InSAR/subsidence genesis analysis/geodetector with optimal parameters/factor detection分类
天文与地球科学引用本文复制引用
操语烟,吕伟才..基于最优参数地理探测器的南通沉降成因分析[J].海洋测绘,2026,46(2):34-38,5.基金项目
安徽省科技重大科技专项(202103a05020026) （202103a05020026）
安徽省重点研究与开发计划(202104a07020014) （202104a07020014）
安徽省自然科学基金项目(2008085MD114). （2008085MD114）
