基于主成分分析的片麻岩山地新栽幼树不同保水措施评价  

Evaluation of Water Conservation Measures on Newly Planted Trees in Gneiss Mountain Based on Principal Component Analysis

作　　者：刘洋[1,2] 赵爽 李寒[1,2] 齐国辉 张雪梅[1,2] 郭素萍 

机构地区：[1]河北农业大学林学院,河北保定071000 [2]河北省核桃工程技术研究中心,河北临城054300

出　　处：《水土保持通报》2017年第5期284-289,共6页Bulletin of Soil and Water Conservation

基　　金：林业公益性行业科研专项经费项目"太行山干旱退化山地旱涝灾害生态调控技术研究"(201504408);河北省科技计划项目"河北省山区核桃近自然生产技术创新与示范"(16236810D)

摘　　要：[目的]探索北方退化干旱山地新栽幼树适宜的土壤保水措施,为北方干旱退化山地发展高效节水经济林产业提供科学依据。[方法]以2年生"绿岭"核桃嫁接幼树为试材,进行保水剂、秸秆覆盖和地膜覆盖等保水措施的不同组合处理,研究不同保水措施对土壤环境状况及新栽核桃幼树生长的影响,并采用主成分分析法对保水措施进行科学的综合评价。[结果]用土壤理化性质、土壤微生物数量和新栽幼树生长状况3个层次的17个指标构建了片麻岩山地新栽幼树保水措施的筛选模型,将原始数据标准化,提取出了4个主成分,可反映保水措施93.453%的综合效果。[结论]地膜覆盖是片麻岩山地新栽幼树最佳的保水措施。[Objective]To find out suitable soil water conservation measures in arid and degradation mountain regions in North China,in order to provide scientific basis for the development of efficient water-saving forest industry in the northern arid degraded mountainous areas.[Methods]Two years old＂Lüling＂grafted walnut seedlings were used as materials to study the effects of different combinations of aquasorb,straw and plastic film mulching on soil environment and growth of newly planted young walnut trees.Principal component analysis was used for the comprehensive evaluation of water conservation measures.[Results]Seventeen indices of physical and chemical properties of soil,soil microbial quantity and newly planted tree growth status were used to construct the screening model of water conservation measures on newly planted trees in gneiss mountains.Using the standardized data,four principal components were extracted from 17 indices,which can explain 93.453% of the comprehensive effect of water conservation measures.[Conclusion]The plastic film mulching is the best water conservation measure for newly planted tree in gneiss mountains.

关 键 词：核桃 保水措施 主成分分析 综合评价 

分 类 号：S152.71[农业科学—土壤学]