Urbanization's dual role in the exacerbation and mitigation of drought dynamics in China

Since the 1980s, China’s rapid urbanization has raised significant concerns about its potential impact on local drought conditions as it influences ecological, environmental, and meteorological systems, yet its specific effects on drought duration, severity, and intensity remain underexplored. This study examines the impact of urbanization on drought dynamics across mainland Chinese cities using seven decades (1951–2020) of historical weather station observations. Our analysis suggests that urbanization plays a dual role in both exacerbating and mitigating drought conditions. The findings reveal that 50–55% of urban weather observation stations exhibited exacerbation of drought (ED) dynamics, characterized by increases in drought duration and severity ranging from +15% to +40%. Conversely, 45–50% of them demonstrated drought mitigation (MD) effects, with reductions in these metrics ranging from -15% to -37%. These results highlight the complex and multifaceted ways in which urbanization..., , # Urbanization's dual role in the exacerbation and mitigation of drought dynamics in China

Dataset DOI: [10.5061/dryad.zpc866tkp](10.5061/dryad.zpc866tkp)

## Description of the data and file structure

The data were sourced from 700 benchmark ground observation stations or automatic stations covering most of the country. Precipitation data from 1951 to 2020 were obtained from the China Meteorological Data Sharing Service System (**[http://data.cma.cn/en](http://data.cma.cn/en)**) at a monthly timescale and were corrected for missing values using the Global Precipitation Climatology Centre (GPCC) dataset (**[http://gpcc.dwd.de/](http://gpcc.dwd.de/)**). Evapotranspiration data for the same period (1951–2020) were obtained from the global gridded dataset of monthly climate data developed by the Climatic Research Unit (CRU TS v4.06). Finally, the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI) were computed at multiple timescales ...,

自20世纪80年代以来，中国快速的城市化进程对当地干旱状况的潜在影响引发了广泛关注——因其会作用于生态、环境与气象系统，但目前学界对其在干旱持续时长、严重程度及强度方面的具体影响仍探索不足。本研究依托1951年至2020年共70年的地面气象站历史观测数据，探究中国大陆各城市的城市化进程对干旱动态变化的影响。分析结果表明，城市化对干旱状况兼具加剧与缓解的双重作用。研究结果显示，50%至55%的城市气象观测站呈现出干旱加剧（Exacerbation of Drought, ED）动态特征，表现为干旱持续时长与严重程度分别上升15%至40%；与之相反，45%至50%的观测站则表现出干旱缓解（Mitigation of Drought, MD）效应，上述指标分别降低15%至37%。本研究结果揭示了城市化通过复杂且多维度的途径影响干旱状况……——# 中国城市化对干旱动态变化的加剧与缓解双重作用

数据集DOI：10.5061/dryad.zpc866tkp

数据与文件结构说明

本数据集源自覆盖全国大部分区域的700个基准地面观测站或自动气象站。1951年至2020年的降水数据取自中国气象数据共享服务系统（**[http://data.cma.cn/en](http://data.cma.cn/en)**)，时间分辨率为月尺度；研究通过全球降水气候中心（Global Precipitation Climatology Centre, GPCC）数据集（**[http://gpcc.dwd.de/](http://gpcc.dwd.de/)**）对缺失值进行了插补修正。同期（1951年至2020年）的蒸散发数据取自气候研究单位（Climatic Research Unit, CRU TS v4.06）构建的全球格点化月尺度气候数据集。最终，研究人员基于多时间尺度计算了标准化降水指数（Standardized Precipitation Index, SPI）与标准化降水蒸散指数（Standardized Precipitation Evapotranspiration Index, SPEI）……