摘要
以鄂尔多斯6种植物为研究对象,分别测定了叶面积(LA)、叶厚度、叶绿素含量(SPAD)、比叶面积(SLA)、叶干物质含量(LDMC)和叶片相对含水量(RWC)等叶功能性状,比较不同生活型叶片功能性状的差异性。结果表明:6种植物叶片通过减少叶面积、增加叶厚度和叶绿素含量来适应干旱环境,沙蓬、虫实等1年生植物的SLA显著高于柠条、沙柳、杨柴、油蒿等灌木(P<0.05),而不同生活型LDMC的差异性表现为1年生植物显著低于灌木(P<0.05),SLA与LDMC呈负相关关系。不同生活型植物叶片功能性状差异明显,1年生植物具有较强的获取资源和保持体内营养的能力,灌木能够较强地适应干旱环境。
Taking six kinds of plant in Ordos as research object, leaf area(LA), leaf thickness, chlorophyll content(spad), specific leaf area(SLA), leaf dry matter content(LDMC) and leaf relative water content(RWC) have been measured to compare the difference of leaf functional trait among different life forms. The results show that six kinds of plant could suit the arid environment with reducing leaf area, increasing leaf thickness and chlorophyll content. SLA of one-year Agriophyllum squarrosum and Corispermum mongolicum are obviously higher than that of Caragana korshinskii, Salix psammophila, Hedysarum laeve and Artemisia ordosica(P<0.05), there is a negative correlation between SLA and LDMC. There are obvious differences of leaf function trait for different life forms, one-year plants have strong ability to obtain resource and maintain body nutrient, and the shrubs can suit the arid environment strongly.
作者
任昱
魏春光
郭小宇
REN Yu;WEI Chun-guang;GUO Xiao-yu(Ordos Vocational College of Eco-Environment,Inner Mongolia,Ordos 017010,China;Management Committee of Engebei Ecological Demonstration District,Ordos,Inner Mongolia,Ordos 014321,China)
出处
《内蒙古林业科技》
2019年第4期43-46,55,共5页
Journal of Inner Mongolia Forestry Science and Technology
基金
鄂尔多斯市科技计划项目“生物可降解聚乳酸纤维(PLA)沙障在防沙治沙中的应用研究”(YY201710053)
内蒙古自治区高校科研项目“鄂尔多斯荒漠植物种子库建立”(NJZY18363)资助
关键词
叶功能性状
比叶面积
叶干物质含量
leaf function traits
specific leaf area
leaf dry matter content
