Xianglei Yang , Wenxiang Zhang , Aifeng Lv , Taohui Li , Pengfei Yin
{"title":"中国气象、农业和植被干旱的传播动态","authors":"Xianglei Yang , Wenxiang Zhang , Aifeng Lv , Taohui Li , Pengfei Yin","doi":"10.1016/j.jhydrol.2025.134284","DOIUrl":null,"url":null,"abstract":"<div><div>Meteorological drought (MetD) serves as the primary driver of other drought types by altering the hydrological cycle and initiating subsequent droughts. However, the mechanisms of propagation from MetD to agricultural drought (AgrD) and vegetation drought (VegD) remain poorly quantified across China’s diverse climatic gradients. Elucidating this complete propagation pathway is critical for enhancing drought monitoring and early warning systems across various ecosystems. This study employed the Standardized Precipitation Index (SPI), Standardized Soil Moisture Index (SSMI), and Vegetation Condition Index (VCI) to quantify MetD, AgrD, and VegD, respectively. The results revealed significant disparities in both the average duration and frequency of MetD, AgrD, and VegD across China. MetD exhibited the highest mean frequency (1.43 times/year), exceeding AgrD (0.54 times/year) and VegD (1.17 times/year). All drought types demonstrated alleviation trends, as evidenced by significant increases in SPI (57.11 %), SSMI (86.63 %), and VCI (65.00 %). MetD exerted the strongest influence on AgrD, while AgrD had a more substantial effect on VegD than MetD. The average propagation time from MetD to AgrD was 7.38 months, significantly shorter than from MetD to VegD (12.94 months) and from AgrD to VegD (12.79 months). Propagation processes were shorter in summer and autumn compared to spring and winter, influenced by climate and vegetation types. These findings provide a scientific foundation for drought risk assessment, ecological restoration, and vegetation recovery initiatives in China, contributing to the development of a more comprehensive drought monitoring system.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"663 ","pages":"Article 134284"},"PeriodicalIF":6.3000,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Propagation dynamics of meteorological, agricultural, and vegetation droughts in China\",\"authors\":\"Xianglei Yang , Wenxiang Zhang , Aifeng Lv , Taohui Li , Pengfei Yin\",\"doi\":\"10.1016/j.jhydrol.2025.134284\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Meteorological drought (MetD) serves as the primary driver of other drought types by altering the hydrological cycle and initiating subsequent droughts. However, the mechanisms of propagation from MetD to agricultural drought (AgrD) and vegetation drought (VegD) remain poorly quantified across China’s diverse climatic gradients. Elucidating this complete propagation pathway is critical for enhancing drought monitoring and early warning systems across various ecosystems. This study employed the Standardized Precipitation Index (SPI), Standardized Soil Moisture Index (SSMI), and Vegetation Condition Index (VCI) to quantify MetD, AgrD, and VegD, respectively. The results revealed significant disparities in both the average duration and frequency of MetD, AgrD, and VegD across China. MetD exhibited the highest mean frequency (1.43 times/year), exceeding AgrD (0.54 times/year) and VegD (1.17 times/year). All drought types demonstrated alleviation trends, as evidenced by significant increases in SPI (57.11 %), SSMI (86.63 %), and VCI (65.00 %). MetD exerted the strongest influence on AgrD, while AgrD had a more substantial effect on VegD than MetD. The average propagation time from MetD to AgrD was 7.38 months, significantly shorter than from MetD to VegD (12.94 months) and from AgrD to VegD (12.79 months). Propagation processes were shorter in summer and autumn compared to spring and winter, influenced by climate and vegetation types. These findings provide a scientific foundation for drought risk assessment, ecological restoration, and vegetation recovery initiatives in China, contributing to the development of a more comprehensive drought monitoring system.</div></div>\",\"PeriodicalId\":362,\"journal\":{\"name\":\"Journal of Hydrology\",\"volume\":\"663 \",\"pages\":\"Article 134284\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2025-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Hydrology\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022169425016245\",\"RegionNum\":1,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrology","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022169425016245","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
Propagation dynamics of meteorological, agricultural, and vegetation droughts in China
Meteorological drought (MetD) serves as the primary driver of other drought types by altering the hydrological cycle and initiating subsequent droughts. However, the mechanisms of propagation from MetD to agricultural drought (AgrD) and vegetation drought (VegD) remain poorly quantified across China’s diverse climatic gradients. Elucidating this complete propagation pathway is critical for enhancing drought monitoring and early warning systems across various ecosystems. This study employed the Standardized Precipitation Index (SPI), Standardized Soil Moisture Index (SSMI), and Vegetation Condition Index (VCI) to quantify MetD, AgrD, and VegD, respectively. The results revealed significant disparities in both the average duration and frequency of MetD, AgrD, and VegD across China. MetD exhibited the highest mean frequency (1.43 times/year), exceeding AgrD (0.54 times/year) and VegD (1.17 times/year). All drought types demonstrated alleviation trends, as evidenced by significant increases in SPI (57.11 %), SSMI (86.63 %), and VCI (65.00 %). MetD exerted the strongest influence on AgrD, while AgrD had a more substantial effect on VegD than MetD. The average propagation time from MetD to AgrD was 7.38 months, significantly shorter than from MetD to VegD (12.94 months) and from AgrD to VegD (12.79 months). Propagation processes were shorter in summer and autumn compared to spring and winter, influenced by climate and vegetation types. These findings provide a scientific foundation for drought risk assessment, ecological restoration, and vegetation recovery initiatives in China, contributing to the development of a more comprehensive drought monitoring system.
期刊介绍:
The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.