大兴安岭低质落叶松林补植改造后土壤肥力的综合评价  

Comprehensive Evaluation of Replanting Larix dahurica Low Quality Forest on Soil Fertility in Daxing'an Mountains

作　　者：韩贵杰 唐亚森 曲杭峰 董希斌 Han Guijie;Tang Yasen;Qu Hangfeng;Dong Xibin(Xinlin Bureau of Daxing＇an Mountains,Xinlin 165023,P.R.China;Key Laboratory of Forest Sustainable Management and Environmental Microorganism Engineering of Heilongjiang Province,Northeast Forestry University)

机构地区：[1]大兴安岭新林林业局,新林165023 [2]森林持续经营与环境微生物工程黑龙江省重点实验室(东北林业大学)

出　　处：《东北林业大学学报》2018年第6期56-62,共7页Journal of Northeast Forestry University

基　　金：国家重点研发计划项目(2017YFC0504103)

摘　　要：以大兴安岭林区新林林业局低质落叶松林为研究对象,对其进行不同密度的补植改造,采用灰色关联分析法对各补植改造样地的土壤肥力进行研究。结果表明:到各补植样地的灰色关联度从大到小的顺序是BZ5(0.726)、BZ4(0.671)、BZ3(0.667)、BZ2(0.580)、BZ6(0.570)、BZ1(0.503)、CK(0.472)。与对照样地相比,补植改造后各样地的土壤肥力均有不同程度的提高,说明补植改造对试验样地的土壤肥力均有改善作用;且随着补植密度的增大,土壤肥力的各项指标呈现先增大后减小的趋势,说明补植密度并非越大越好,其中BZ5样地的灰色关联度最高,表明补植密度为700株·hm-2的改造方式最有利于土壤肥力的积累,适宜大兴安岭低质落叶松林的补植改造。The different densities of replanting alterations were conducted to focus on Larixdahurica low-quality forest in Xinlin Forestry of Daxing’an Mountains. The evaluation system of soil fertility was established with grey relation analysis method and variation coefficients, and the grey relation degrees of soil nutrients in different plots were in the descending order of BZ5（0.726）, BZ4（0.671）, BZ3（0.667）, BZ2（0.580）, BZ6（0.570）, BZ1（0.503）, CK（0.472）. The soil fertility was increased compared with the control plot in different degree after replanting alterations, with the increase of replanting density, the soil fertility in different plots was increased firstly and then decreased, and the grey relation degree of BZ5 was the highest, which indicated that the integrated density of 700 tree·hm^-2 was the most suitable for the accumulation of soil nutrients, and the best for the replanting alterations of Larix dahurica low-quality forest in Daxing’an Mountains.

关 键 词：大兴安岭 补植改造 土壤肥力 灰色关联分析 

分 类 号：S714.8[农业科学—林学]