森林与环境学报2026，Vol.46Issue(3)：297-305,9.DOI:10.13324/j.cnki.jfcf.202510013
不同土壤水分条件下花椒蒸腾动态变化及其环境响应
Transpiration dynamics and environmental factor responses of Zanthoxylum bungeanum under different soil moisture conditions
摘要
Abstract
To investigate the differences in the response of plant transpiration to environmental factors under varying soil moisture conditions,this study focused on a Zanthoxylum bungeanum forest in the Huajiang Gorge,Guanling County,Anshun City,Guizhou Province.By conducting in-situ monitoring of sap flow,local meteorological factors,and soil water content,the study analyzed the differences in the response of Z.bungeanum sap flow to environmental factors during three periods:the dry seasons of 2023-2024 and 2024-2025 and the rainy season of 2024.The results showed that during these three periods,soil moisture conditions exhibited differences corresponding to the hydrological conditions at the time,and Z.bungeanum demonstrated differences in sap flow during these periods(P<0.05).Under different soil moisture conditions,the driving effects of environmental factors on Z.bungeanum sap flow varied markedly.During the rainy season of 2024,sap flow was primarily regulated by the combined effects of vapor pressure deficit,air temperature,and photosynthetically active radiation.During the dry season of 2023-2024,sap flow remained predominantly influenced by meteorological factors.In the dry season of 2024-2025,soil water content became the main driving factor affecting sap flow,followed by vapor pressure deficit and air temperature.These findings indicate that plants exhibit unique adaptive strategies when facing varying degrees of water stress.Furthermore,when soil water content dropped to 14.45%,the sap flow of Z.bungeanum exhibited a threshold effect.关键词
花椒/树干液流/土壤含水量/蒸腾/环境因子/驱动因子Key words
Zanthoxylum bungeanum/sap flow/soil water content/transpiration/environmental factors/driving factors分类
农业科技引用本文复制引用
杨芷莹,李开萍,李渊..不同土壤水分条件下花椒蒸腾动态变化及其环境响应[J].森林与环境学报,2026,46(3):297-305,9.基金项目
国家自然科学基金地区科学基金项目"表层岩溶带多介质储水结构对植物水分利用的调控机制"(42561007) （42561007）
贵州省科技计划项目"喀斯特坡耕地经济林适水阈值研究与水资源高效利用技术"(黔科合支撑[2026]一般292) （黔科合支撑[2026]一般292）
贵州省教育厅高等学校科学研究项目(青年项目)"喀斯特地区花椒水分运移机制及用水策略研究"(黔教技[2024]171号). （青年项目）
