摘要
通过相关性分析确定衡量翅荚木单项抗寒能力大小的6个指标,用主成分分析法将这些指标转换成综合指数,确定指标权重,建立评价体系。根据指标权重和隶属函数值,求得翅荚木各个种源抗寒性的综合指数值,依照综合指数的大小判定不同种源的抗寒性强弱的排序为:湖南通道>贵州兴义>广西忻城>广东英德>湖南江华>广西靖西。通过聚类分析,将翅荚木种源划分为3类:湖南通道和贵州兴义种源为一类,抗寒性较好;广西忻城和广东英德种源为一类,抗寒性一般;湖南江华和广西靖西种源为一类,抗寒性较差。
Six indicators for cold resistance assessment of different Zenia insignis provenances by correlation analysis were converted to integrated index by principle component analysis, and their weight for establishing the assessment system was determined. Integrated index value of cold resistance of each provenance was obtained based on weight and its function value. The cold resistance order of different provenances was as follows ： Tongdao of Hunan 〉 Xingyi of Guizhou 〉 Xincheng of Guangxi 〉 Yingde of Guangdong 〉 Jianghua of Hunan 〉 Jingxi of Guangxin. Theses provenances of Z. insignis could be divided into 3 groups by cluster analysis. Tongdao of Hunan and Xingyi of Guizhou had better cold resistance, Xincheng of Guangxi and Yingde of Guangdong had moderate one and Jianghua of Hunan and Jingxi of Guangxi were the worse.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2007年第10期45-50,共6页
Scientia Silvae Sinicae
基金
浙江省科技计划项目"珍稀速生原料林树种--翅荚木的引种及其繁育技术研究"(2005C32044)的部分研究内容
关键词
翅荚木
种源
抗寒性
综合评价
Zenia insignis
provenance
cold resistance
integrated assessment
