3树种抗旱性的综合评价及其抗旱指标的选取  

Comprehensive Evaluation on Drought-resistance of Three Tree Species and the Choice of Drought-resistance Indexes

作　　者：李禄军[1] 蒋志荣[1] 李正平[2] 邵玲玲[1] 

机构地区：[1]甘肃农业大学林学院,兰州730070 [2]兰州市南北两山环境绿化工程指挥部,兰州730046

出　　处：《水土保持研究》2006年第6期253-254,259,共3页Research of Soil and Water Conservation

基　　金：甘肃省兰州市南北两山植物资源调查研究[LNLG2005(01)]

摘　　要：对红柳、侧柏、合头草的9个抗旱指标进行了测定,并运用隶属函数值法对三种树种抗旱性进行综合分析。结果表明,3树种抗旱性大小顺序依次为:红柳>侧柏>合头草。运用灰色关联分析法,对3树种的抗旱性与9个抗旱指标的相关性进行了分析。关联度分析结果表明:叶绿素含量、叶水势、叶片相对含水量以及电导率可作为3树种重要的抗旱评价指标。Applying the method of subordinate function, nine physiological drought resistance indexes of 3 species were measured and a comprehensive evaluation on drought resistance of them was given. The results showed that the drought resistant capability decreased in order of Tarnarix rarnosissirna Ldb. ,Platycladus orientalis and Syrnpegrna regelii. Applying the method of grey correlative analysis, the correlation of drought resistance and drought resistance indexes was analyzed. The results with grey correlative degree analysis showed that chlorophyll content, water potential of leaves, relative water content and electric conductivity can be regarded as the important indexes of drought resistance evaluation of the species.

关 键 词：抗旱性 隶属函数 综合评价 灰色关联分析 

分 类 号：S718.43[农业科学—林学]