广西合浦山口红树林互花米草成熟期叶水势初步研究  

Leaf Water Potential of Spartina alterniflora at the Maturation Stage in Shankou Mangrove Area of Guangxi

作　　者：甘肖梅[1] 李军伟[1] 李凤[1] 韦锋[1] 覃盈盈[1] 蒋潇潇[1] 梁士楚[1] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004

出　　处：《安徽农业科学》2009年第32期15812-15814,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金(30660036);广西自然科学基金(桂科自0728096)

摘　　要：于2008年9月初互花米草成熟期,利用WESLER公司生产的PSYPRO水势测量系统测定广西合浦山口红树林泥沙质土壤生长的互花米草水势日变化,同步测定光量子通量密度、温度、湿度情况,并分析互花米草叶水势的变化规律及其与气象因子之间的关系。结果表明,互花米草叶水势均受光量子通量密度、气温及相对湿度的影响,其中温度对互花米草叶水势的影响最大,而光量子通量密度和湿度对叶水势的影响则相对较小,互花米草水势日变化与3个气象因子间相关性极显著。The leaf water potential （LWP） of Spartina aherniflora which is grown in the sediment soil of Shankou mangrove area of Guangxi was measured by PSYPRO water potential guage in Sep. 2008, at the same time, variations of LWP and related meteorological factors were analyzed. The results showed that air temperature was the main impact-factor, the order was air temperature 〉 air relative humidity 〉 photo flux densit （PED）. The LWP had a negative correlation to the air temperature and the air relative humidity, and a positive correlation to the PFD, the LWP showed high correlation with the three metrological factors.

关 键 词：互花米草 叶水势 光量子通量密度 温度 湿度 

分 类 号：S718.43[农业科学—林学]