江西水利电力大学学报2026，Vol.45Issue(1)：23-30,8.
赣江流域植被恢复对水文干旱缓解量化分析
Quantitative analysis of effect of vegetation restoration on hydrological drought mitigation in Ganjiang River Basin
摘要
Abstract
Vegetation restoration measures are key interventions for regulating hydrological drought resilience.Understanding its regulatory mechanism is regarded as a theoretical prerequisite for planning such measures.Based on long-term meteoro-logical-hydrological records,land use/land cover data,and geospatial information in Ganjiang River Basin,this study system-atically applied the SWAT model and scenario analysis to clarify the co-evolution patterns of meteorological and hydrological droughts with LUCC change,followed by quantifying the contribution of vegetation restoration to hydrological drought mitiga-tion.The analysis indicates that the basin was dominated by forest and cropland,accounting for 68.8％ and 26.9％ of the area,respectively.Vegetation restoration has been pronounced,indicated by a significant increase in Normalized Difference Vegetation Index(NDVI).The overall meteorological drought in the basin remained stable,with a significant wetting trend only observed in the post-flood season and over long-term scales of more than 9 months.In contrast,hydrological drought has been generally alleviated,with the mitigation effect being particularly pronounced during the flood season.Notably,the fre-quency of abrupt drought-flood alternation from the main flood season to the post-flood season has increased,predominantly characterized by transitions from drought to flood.The SWAT model exhibits satisfactory simulation performance:the Nash-Sutcliffe Efficiency coefficients and coefficients of determination during the calibration and validation periods are greater than 0.63 and 0.65,respectively.Scenario analysis reveals that the increase in NDVI values promotes more uniform runoff distribution from the main flood season to the post-flood season,which constitutes the primary driver behind the alleviation of seasonal hydrological drought.关键词
植被恢复/水文干旱/SWAT模型Key words
vegetation restoration/hydrological drought/SWAT model分类
天文与地球科学引用本文复制引用
王永文,张翔,杨筱筱,黄宝怡,汤繁,白桦..赣江流域植被恢复对水文干旱缓解量化分析[J].江西水利电力大学学报,2026,45(1):23-30,8.基金项目
江西省自然科学基金项目(20252BAC240135) （20252BAC240135）
江西省水利厅科技项目(202527ZDKT15,202426ZDKT23) （202527ZDKT15,202426ZDKT23）
