摘要
承德地区作为京津冀重要的水源涵养区和生态屏障,其水资源承载力对区域可持续发展与生态安全至关重要。本研究基于承德市全域水资源供需关系、质量状况及地下水位动态监测数据,提出以供水比例、氮汇负荷及地下水位变幅为核心的三要素评价模型,结合层次分析法确定指标权重,系统评估了43个小流域的水资源承载力空间分异特征。结果表明:承德市、承德县及隆化县周边流域因农业灌溉用水占比高(62%)、局部氮负荷偏高及地下水开采压力较大(年均降幅>0.5 m)等问题,水资源承载力相对较低;而围场县、丰宁县等北部区域因供水充足、水质稳定且水位波动较小,呈现较高承载力。研究揭示了城镇化进程与农业活动对承载力的复合影响,并建议通过分区管控、监测体系优化及跨区域协同机制提升水资源管理效能。该方法可为中小尺度区域水资源可持续利用提供科学参考。
As a critical water conservation area and ecological barrier in the Beijing-Tianjin-Hebei region,the water resources carrying capacity(WRCC)of Chengde is vital for regional sustainable development and ecological security.This study proposed a three-factor evaluation model(water supply ratio,nitrogen pollution load,and groundwater level variation)based on monitoring data of water supply-demand relationships,water quality,and groundwater dynamics in Chengde.The analytic hierarchy process(AHP)was applied to determine indicator weights,and the spatial heterogeneity of WRCC across 43 small watersheds was systematically evaluated.Results demonstrate that watersheds around Chengde City,Chengde County,and Longhua County exhibited relatively low WRCC due to high agricultural water use(62%),partial nitrogen load accumulation,and groundwater over-extraction pressure(annual decline>0.5 m).In contrast,northern regions such as Weichang County and Fengning County showed higher WRCC owing to sufficient water supply,stable water quality,and minimal groundwater level fluctuations.The study highlighted the combined effects of urbanization and agricultural practices on WRCC and proposed strategies,including zoning management,monitoring system refinement,and inter-regional coordination to enhance water resource governance.This method provides a scientific foundation for sustainable water resource utilization in medium-and small-scale regions.
作者
景志华
刘文波
张明宇
杨瑞
王鹏
Jing Zhihua;Liu Wenbo;Zhang Mingyu;Yang Rui;Wang Peng(514 Brigade of North China Geological Exploration Bureau,Chengde 067000,Hebei,China;Hebei Key Laboratory of Geologic-al Resources Exploration and Ecological Protection,Chengde 067000,Hebei,China;China Geological Environment Monitoring In-stitute,Beijing 100081,China)
出处
《岩土工程技术》
2025年第6期808-815,共8页
Geotechnical Engineering Technique
基金
津华勘办–滦河上游水文过程演变机理及水源涵养能力强化研究(HK2022-B17)
中国地质调查局项目承德市生态文明示范区综合地质调查(DD20190822)。
关键词
承德地区
水资源承载力
三要素模型
氮汇负荷
地下水位变幅
Chengde area
water resources carrying capacity
three-factor model
nitrogen pollution load
groundwater level variation
