From climate-driven to dam-regulated: Impacts of dams on riparian vegetation in a mountainous river system
文献类型：期刊论文
| 作者 | Wang, Nan2; Xu, Zhen3; Xu, Yingjun2; Yang, Yacun2; Cong, Nan1; Yao, Weiwei2 |
| 刊名 | CATENA
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 265页码:109879 |
| 关键词 | Cascade dams Riparian vegetation Microclimate Hydrological regulation Spatial heterogeneity Jinsha River |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2026.109879 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Dams profoundly influence riparian ecosystems, yet their ecological consequences and spatial heterogeneity in mountainous environments remain poorly quantified. Focusing on China's Lower Jinsha River Basin, we analyzed vegetation responses to cascade dams by integrating long-term Normalized Difference Vegetation Index (NDVI) time series with climatic and hydrological datasets from 2000 to 2019. We employed a multi-method analytical framework to quantitatively disentangle the relative contributions of dam operations and climatic variability, delineate their direct and indirect pathways, and assess vegetation heterogeneity across key environmental gradients. Results indicate that post-dam NDVI trends nearly doubled (up to 0.0092 yr(-1)), with the strongest greening in winter. A pre-/post-impoundment shift associated with dam operation accounted for 73.7% of the explained NDVI variance, substantially outweighing the contribution of climatic variability. NDVI dynamics thus transitioned from a climate-driven regime to one increasingly shaped by dam-associated hydrologic stabilization and indirect microclimatic effects, including increased precipitation, warmer winters, and reduced summerautumn heat stress. These changes exhibited strong spatial heterogeneity. Significant NDVI increases and reduced variability were most evident at mid-to-high elevations within similar to 80 km upstream of dams, whereas NDVI declines and increased variability were concentrated in low-elevation zones (< 500 m). Forests exhibited the most coherent NDVI increases, expressed through both steeper upward slopes and reversals from declining to increasing trends, while croplands and grasslands displayed more divergent responses, with a higher proportion of declining trends compared to forests. These findings emphasize the need to incorporate ecological feedbacks and spatial heterogeneity into dam planning to optimize riparian vegetation management under regulated flows. |
| URL标识 | 查看原文 |
| WOS关键词 | GORGES RESERVOIR AREA ; YANGTZE-RIVER ; SOIL-EROSION ; JINSHA RIVER ; RESPONSES ; PRECIPITATION ; CONSTRUCTION ; TEMPERATURE ; REACHES ; PLATEAU |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001683488000001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/220885]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 通讯作者 | Yao, Weiwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China 2.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China; 3.Minist Water Resources, Gen Inst Water Resources & Hydropower Planning & D, Beijing 100120, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Nan,Xu, Zhen,Xu, Yingjun,et al. From climate-driven to dam-regulated: Impacts of dams on riparian vegetation in a mountainous river system[J]. CATENA,2026,265:109879. |
| APA | Wang, Nan,Xu, Zhen,Xu, Yingjun,Yang, Yacun,Cong, Nan,&Yao, Weiwei.(2026).From climate-driven to dam-regulated: Impacts of dams on riparian vegetation in a mountainous river system.CATENA,265,109879. |
| MLA | Wang, Nan,et al."From climate-driven to dam-regulated: Impacts of dams on riparian vegetation in a mountainous river system".CATENA 265(2026):109879. |
入库方式： OAI收割
来源：地理科学与资源研究所
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