{"title":"祁连山东部亚高山灌丛带土壤水分的补给与入渗","authors":"Zhi Wang, Wenxiong Jia, Yue Zhang, Xin Lan, Zhijie Yu, Huifang Luo, Lifang Chou","doi":"10.1007/s12665-025-12312-2","DOIUrl":null,"url":null,"abstract":"<div><p>The Qilian Mountains are an important ecological security barrier in the northwest China and a major water supply area for the Hexi Corridor. It is of great significance to study their hydrological processes. Based on the stable isotope values of precipitation, soil water and groundwater in the subalpine shrub zone of the eastern Qilian Mountains from May to October 2019, their stable isotope characteristics as well as the recharge and infiltration of soil water were analyzed by the lc-excess method and the lc-excess balance equation. The results showed that stable isotopes of precipitation showed significant enrichment in spring and depletion in summer and autumn, characterized by large fluctuations. Stable isotopes of soil water were enriched in summer and depleted in spring, appearing a tendency of gradual decrease with the increase of soil layer depth. However, stable isotopes of groundwater had the smallest fluctuations. Soil water was obviously recharged by precipitation in summer, but lower recharge was observed in spring and autumn. The main contributors to soil water recharge were precipitation events with the intensities of 10–20 mm/day and 20–30 mm/day. In subalpine shrub zone, both piston flow and preferential flow patterns coexisted in the infiltration of soil water, with a relative contribution rate of 76% from plug flow and 24% from preferential flow to groundwater recharge. The results are of theoretical value and practical significance for understanding hydrological processes and evaluating groundwater quantity in the subalpine shrub zone.</p></div>","PeriodicalId":542,"journal":{"name":"Environmental Earth Sciences","volume":"84 11","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The recharge and infiltration of soil water in the subalpine shrub zone of the eastern Qilian Mountains in China\",\"authors\":\"Zhi Wang, Wenxiong Jia, Yue Zhang, Xin Lan, Zhijie Yu, Huifang Luo, Lifang Chou\",\"doi\":\"10.1007/s12665-025-12312-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The Qilian Mountains are an important ecological security barrier in the northwest China and a major water supply area for the Hexi Corridor. It is of great significance to study their hydrological processes. Based on the stable isotope values of precipitation, soil water and groundwater in the subalpine shrub zone of the eastern Qilian Mountains from May to October 2019, their stable isotope characteristics as well as the recharge and infiltration of soil water were analyzed by the lc-excess method and the lc-excess balance equation. The results showed that stable isotopes of precipitation showed significant enrichment in spring and depletion in summer and autumn, characterized by large fluctuations. Stable isotopes of soil water were enriched in summer and depleted in spring, appearing a tendency of gradual decrease with the increase of soil layer depth. However, stable isotopes of groundwater had the smallest fluctuations. Soil water was obviously recharged by precipitation in summer, but lower recharge was observed in spring and autumn. The main contributors to soil water recharge were precipitation events with the intensities of 10–20 mm/day and 20–30 mm/day. In subalpine shrub zone, both piston flow and preferential flow patterns coexisted in the infiltration of soil water, with a relative contribution rate of 76% from plug flow and 24% from preferential flow to groundwater recharge. The results are of theoretical value and practical significance for understanding hydrological processes and evaluating groundwater quantity in the subalpine shrub zone.</p></div>\",\"PeriodicalId\":542,\"journal\":{\"name\":\"Environmental Earth Sciences\",\"volume\":\"84 11\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-05-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Earth Sciences\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12665-025-12312-2\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Earth Sciences","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s12665-025-12312-2","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
The recharge and infiltration of soil water in the subalpine shrub zone of the eastern Qilian Mountains in China
The Qilian Mountains are an important ecological security barrier in the northwest China and a major water supply area for the Hexi Corridor. It is of great significance to study their hydrological processes. Based on the stable isotope values of precipitation, soil water and groundwater in the subalpine shrub zone of the eastern Qilian Mountains from May to October 2019, their stable isotope characteristics as well as the recharge and infiltration of soil water were analyzed by the lc-excess method and the lc-excess balance equation. The results showed that stable isotopes of precipitation showed significant enrichment in spring and depletion in summer and autumn, characterized by large fluctuations. Stable isotopes of soil water were enriched in summer and depleted in spring, appearing a tendency of gradual decrease with the increase of soil layer depth. However, stable isotopes of groundwater had the smallest fluctuations. Soil water was obviously recharged by precipitation in summer, but lower recharge was observed in spring and autumn. The main contributors to soil water recharge were precipitation events with the intensities of 10–20 mm/day and 20–30 mm/day. In subalpine shrub zone, both piston flow and preferential flow patterns coexisted in the infiltration of soil water, with a relative contribution rate of 76% from plug flow and 24% from preferential flow to groundwater recharge. The results are of theoretical value and practical significance for understanding hydrological processes and evaluating groundwater quantity in the subalpine shrub zone.
期刊介绍:
Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth:
Water and soil contamination caused by waste management and disposal practices
Environmental problems associated with transportation by land, air, or water
Geological processes that may impact biosystems or humans
Man-made or naturally occurring geological or hydrological hazards
Environmental problems associated with the recovery of materials from the earth
Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources
Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials
Management of environmental data and information in data banks and information systems
Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment
In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.