生态与农村环境学报2025，Vol.41Issue(7)：884-892,9.DOI:10.19741/j.issn.1673-4831.2024.0525
晋西蔡家川小流域植被恢复区水化学特征
Influence of Long-term Vegetation Restoration on Water Quality in Caijiachuan Small Watershed in Western Shanxi Province
摘要
Abstract
This study examined the impact of vegetation restoration on water quality in small watersheds of the Loess Plat-eau since the implementation of the"Grain for Green"policy.The aim was to provide a reference for evaluating watershed water environment quality,optimizing water resource management,and guiding ecological construction and protection ef-forts.Using the Caijiachuan sub-watershed in the loess hilly and gully region of western Shanxi as the study area,long-term monitoring of surface water and groundwater quality was conducted in accordance with the China Ecosystem Research Net-work protocols for forest water environment monitoring.Analysis of variance(ANOVA)was employed to test for significant differences in water quality indicators between 2006 and 2023,while paired t-tests assessed seasonal variations between the flood and non-flood seasons.The results reveal the following:(1)The dominant anion in surface water in both 2006 and 2023 was HCO3-,with concentrations of 339.71 and 384.11 mg·L-1,respectively.In groundwater,the dominant anions were HCO3-and SO42-,with concentrations of 295.1 and 120.6 mg·L-1 in 2006,and 351.22 and 343.89 mg·L-1 in 2023,respectively.The dominant cation in both water types in 2006 was Ca2+,at 46.47 mg·L-1 in surface water and 92.2 mg·L-1 in groundwater.In 2023,Ca2+remained the dominant cation in groundwater(82.97 mg·L-1),while Na+became dominant in surface water(56.11 mg·L-1).(2)Between 2006 and 2023,Mg2+and Cl-concentrations in sur-face water increased by 74.63％and 97.78％,respectively,while K+decreased by 73.50％.In groundwater,concentra-tions of Mg2+,Na+,SO42-,and NO3-increased by 228.77％,44.62％,185.15％,and 353.64％,respectively,whereas K+decreased by 26.67％.(3)In 2006,surface water TDS and HCO3-concentrations,along with groundwater SO42-con-centration and pH,were significantly higher in the non-flood season than in the flood season(P＜0.05).In 2023,surface water COD and groundwater Ca2+concentrations were significantly elevated during the non-flood season(P＜0.05).Over-all,vegetation restoration improved the water quality of both surface water and groundwater in the Caijiachuan sub-water-shed.However,subsequent anthropogenic activities have introduced certain pollutants,indicating the need for continued environmental management.These findings provide a scientific basis for the integrated management of water environment in watershed.关键词
水质/森林水文/水化学特征/植被恢复/晋西黄土区Key words
water quality/forest hydrology/hydrochemical characteristics/vegetation restoration/loess area in western Shanxi分类
资源环境引用本文复制引用
朱洪盛,赵炯昌,池金洺,于洋,张建军,张志强..晋西蔡家川小流域植被恢复区水化学特征[J].生态与农村环境学报,2025,41(7):884-892,9.基金项目
国家重点研发计划(2023YFF1305101) （2023YFF1305101）
国家自然科学基金(42177310) （42177310）
