典型相关分析在湿地土壤特征研究中的应用——以黄河三角洲冲积平原湿地土壤为例  

Application of canonical correlation analysis to the research of wetland soil characters: A case study on natural wetland in Yellow River Delta

作　　者：侯龙鱼[1] 刘艳[1] 马风云[1] 宋玉民[2] 崔晓东[1] 陈怀梁[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018 [2]山东省林业科学研究院,济南251000

出　　处：《中国水土保持科学》2007年第6期47-52,共6页Science of Soil and Water Conservation

基　　金：山东省重点项目"黄河三角洲重盐碱地生态系统建设与造林技术研究"(011150106);山东农业大学博士后基金项目

摘　　要：为了更好地评价和管理湿地,对黄河三角洲冲积平原湿地土壤养分特征和酶活性进行研究,同时运用典型相关分析法研究土壤养分和土壤酶2组变量的关系。结果表明,随着远离海岸线的方向,土壤有机质及各养分表现出有规律的变化,土壤脲酶、过氧化氢酶活性沿湿地演替的方向活性升高,过氧化物酶活性降低。运用"土壤综合养分因子"和"土壤综合酶因子",结合典型变量排序图对湿地土壤性质进行分析评价,得出:极大典型相关变量系数为0.998 8,特征值占总特征值的99.36%,达极显著水平;极大典型相关变量的"土壤综合养分因子"和"土壤综合酶因子"的典型变量排序图显示很好的线性特征,可以作为冲积平原湿地土壤酶活性和土壤养分的指示因子。In order to evaluate and manage wetland, characteristics of soil nutrient elements and enzyme activities of nature wetland were studied in Yellow River Delta. Canonical correlation analysis was applied to the research of relation between soil nutrient element and soil enzyme activity. The results show that soil nutrient elements changed regular along far away from the coastline. The soil enzyme activities of urease and catalase in wetland soil were almost in the same order, while the activity of soil peroxidase was on the contrary. The soil property was analysed and assessed by the ＂integral soil enzyme factor＂, ＂integral soil nutrient factor＂ and their ordination. The biggest canonical correlation coefficient was 0.998 8, whose eigenvalue ratio reached 99.36%. It was significant at 0.01 level. Its ordination of the first pair of canonical variable had the better linear characteristic. So the biggest canonical coefficient can be used to evaluate the nature wetland as a indicator.

关 键 词：湿地 酶活性 典型相关分析 黄河三角洲 

分 类 号：S828.2[农业科学—畜牧学]