Water use characteristics of two Sonneratia mangrove species

Abstract

红树林生长在热带、亚热带海岸潮间带。虽然海水充沛,但高盐度的海水使得土壤孔隙水水势极低,这在很大程度上限制了红树植物对水分的吸收,造成红树植物生理干旱的现象。红树植物大都采取了相同的水分利用策略,就是在节约用水的同时,最大程度地吸收水分。对红树植物的水分利用特征的研究是认识红树植物适应潮间带高盐及淹水胁迫的关键。本研究利用热扩散式茎流仪和微型气象站,在2015–2016年期间对深圳福田红树林自然保护区(22°31'N,114°0'E)内的两种同龄的海桑属红树植物,无瓣海桑(Sonneratiaapetala)和海桑(Sonneratiacaseolaris)的茎流速率以及样地的气象因子进行监测...Mangroves are plants growed in tropical and subtropical tidal wetlands. Saline environment is a physiological obstacle for mangroves because water uptake is more energy-consuming under the extremely negative water potential of the seawater. Mangroves have developed very particular water use strategies in order to survive in highly saline and anaerobic environments, often resulting in efficient wat...学位:理学硕士院系专业:环境与生态学院_生态学学号:3312014115168

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