树木边材液流传输研究述评  

Reviews of Research Work on Sap Flow Process in Tree Species Sapwood

作　　者：谢东锋[1] 马履一[2] 王华田[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018 [2]北京林业大学资源与环境学院,北京100083

出　　处：《江西农业大学学报》2004年第1期149-153,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金资助项目(30371147);山东农业大学博士基金资助项目

摘　　要：结合作者的研究工作进展,对当前国内外有关树边材木水分传输机理的研究概况进行了述评,分析了树木水分传输驱动力的构成要素及内聚力学说对树木边材水分传输连续体合理解释,探讨了稳态流模型和非稳态模型在描述树木水分传输方面的效果,介绍了树木组织水容的概念及其在调控树木水分传输过程中的作用和意义,介绍了当前国内外导管空穴化和木质部栓塞研究概况、树木边材导管空穴化的发生机制及检测方法、树木输导组织栓塞对水分传输的影响及栓塞脆弱性评价等。The research work on sap flow transportation mechanism in tree species' sapwood is briefly reviewed.The elements of sap flow driving force and cohesion theory of sap flow continuum column is introduced. With the introduction of wood tissue water capacitance and its important effect on the controll of sap flow process, the steady and unsteady water flow models are discussed. Recent year's development in the research on conduit cavitation and sapwood embolism is also introduced in details with an introduction of conduit cavitaion mechanism, cavitaion measurement method, embolism effect on sap flow fluctuation, and embolism vulnerability evaluation.

关 键 词：树木 边材 液流传输 水分 导管空穴化 木质部栓塞 非稳态流模型 

分 类 号：S718.43[农业科学—林学]