西南农业学报2025，Vol.38Issue(12)：2591-2599,9.DOI:10.16213/j.cnki.scjas.2025.12.006
西北内陆河流域典型植被水分平衡过程及环境响应研究进展
Research progress on water balance processes and environmental responses of typical vegetations in inland river basins of northwest China
摘要
Abstract
Recently,a discernible'warming-wetting trend'has been observed in northwestern regions of China.Changes in environmental factors are consequently impacting vegetation water balance processes,including water absorption,transport and utilization.Investigating these processes is critically important for understanding plant survival strategies,addressing environmental stressors,guiding practices in agricultural and forestry practices,and predicting responses to climate change,holding significant theoretical and practical relevance.The paper employed literature analysis and summary induction methods to review research findings on water absorption,transport,utilization,and their responses to environmental factors in typical vegetation within the inland river basins of northwest China.(ⅰ)Isotopic techniques,particularly when com-bined with multi-source mixture models such as IsoSource,have become the cornerstone and mainstream methodology for quantitatively tracing and discriminating multiple water sources for vegetation(e.g.,soil water,groundwater,precipitation).This provided a fundamental basis for understanding plant water-use strategies.(ⅱ)The phenomenon of hydraulic redistribution was prevalent in vegetation of inland river basins in arid regions.During drought stress,deep soil water or nocturnal condensation water could be transported via root systems to drier shallow soil layers.Conversely,water might move from deep,moist soil to shallow,dry soil,or even into the atmosphere,supporting the individual plant it-self or facilitating water availability for neighboring plants,thus efficiently mitigating intermittent water scarcity.(ⅲ)Plant water consumption constituted an integrated process.Beyond transpiration,stem water storage and utilization,as well as water directly used in photosynthesis,were two frequently overlooked yet crucial components.A primary research bottleneck lies in the precise partitioning and quantification of these fluxes within the total water use flux.The research perspective necessitated a shift from a singular focus on'transpiration-environment response'to a more holistic'water-balance-environment response'paradigm.(ⅳ)Future research must prioritize elucidating how environ-mental factors regulate the processes of stem water storage/utilization and photosynthetic water use.Clarifying their roles and underlying mechanisms within the overall plant water balance was essential for a more comprehensive understanding of vegetation's physiological and ec-ological functions.Future efforts should focus on integrating process modules into existing ecosystem or hydrological models,including isotope-tracing for source apportionment,hydraulic redistribution,stem water storage dynamics and photosynthetic water use.The integration will ena-ble more realistic simulations of vegetation responses under extreme climate events,significantly enhances the predictive accuracy of ecosystem carbon-water cycle interactions,and provides a powerful scientific tool for assessing ecological risks under future climate change scenarios and for formulating long-term adaptation strategies.关键词
蒸腾/液流/树干储水/光合用水/内陆河Key words
Transpiration/Sap flow/Stem water storage/Photosynthetic water use/Inland river分类
社会科学引用本文复制引用
高冠龙,李庆云,冯起,郝玉莲,许尔文,赵兴鹏..西北内陆河流域典型植被水分平衡过程及环境响应研究进展[J].西南农业学报,2025,38(12):2591-2599,9.基金项目
国家自然科学基金青年基金项目(42301030) （42301030）
山西省基础研究面上基金项目(202203021221035) （202203021221035）
甘肃省重点研发计划项目(25YFWG001) （25YFWG001）
山西省高等教育、研究生教学改革创新项目(J20240022、2025JG021) （J20240022、2025JG021）
国家自然科学基金联合基金项目(U21A20468) （U21A20468）
甘肃省科技计划项目—青年科技基金(25JRRG046) （25JRRG046）
山西省研究生学术创新项目(2024KY112、2025XS193) （2024KY112、2025XS193）
