CAJ | 학술논문

抽样调查了四川省盐边县块菌产区的植物群落优势物种、块菌生态环境情况，用多元回归树方法系统分析了优势物种和生态环境因子对块菌发生的影响。结果表明，盐边县块菌产区的优势物种共有种子植物58种，隶属29科47属，蕨类植物4科4属，该区域植物群落结构不是十分复杂，但呈现出一定多样性，主要优势乔木为云南松(Pinus yunnanensis)、云南油杉(Keteleeria evelyniana)、青冈(Cyclobalanopsis glauca)、清香木(Pistacia weinmannifolia)等，主要优势灌木及草本为马桑(Coriaria nepalensis)、杜鹃(Rhododendron simsii)、密花树(Rapanea neriifolia)、紫茎泽兰(Ageratina adenophora)、飞机草(Eupatorium odoratum)、鬼针草(Bidens pilosa)等。该区域块菌的寄主主要为云南松、云南油杉、青冈及清香木。多元回归树分析结果表明，凤尾蕨(变种)(Pteris cretica var.nervosa)、紫茎泽兰、云南松、鬼针草、云南油杉及清香木是关键的物种影响因子，其中凤尾蕨(变种)、紫茎泽兰及鬼针草表现为负向影响，而云南松、云南油杉及清香木则表现出正向影响。在生态环境因子中，郁闭度、坡度、海拔、乔木平均高、灌木平均高及乔木平均胸径是影响块菌发生的关键因子。在一定范围内，块菌的发生表现出随郁闭度增加、坡度减缓、海拔升高、乔木平均高降低、灌木平均高及乔木平均胸径的增加而增加的趋势。
추양조사료사천성염변현괴균산구적식물군락우세물충、괴균생태배경정황，용다원회귀수방법계통분석료우세물충화생태배경인자대괴균발생적영향。결과표명，염변현괴균산구적우세물충공유충자식물58충，대속29과47속，궐류식물4과4속，해구역식물군락결구불시십분복잡，단정현출일정다양성，주요우세교목위운남송(Pinus yunnanensis)、운남유삼(Keteleeria evelyniana)、청강(Cyclobalanopsis glauca)、청향목(Pistacia weinmannifolia)등，주요우세관목급초본위마상(Coriaria nepalensis)、두견(Rhododendron simsii)、밀화수(Rapanea neriifolia)、자경택란(Ageratina adenophora)、비궤초(Eupatorium odoratum)、귀침초(Bidens pilosa)등。해구역괴균적기주주요위운남송、운남유삼、청강급청향목。다원회귀수분석결과표명，봉미궐(변충)(Pteris cretica var.nervosa)、자경택란、운남송、귀침초、운남유삼급청향목시관건적물충영향인자，기중봉미궐(변충)、자경택란급귀침초표현위부향영향，이운남송、운남유삼급청향목칙표현출정향영향。재생태배경인자중，욱폐도、파도、해발、교목평균고、관목평균고급교목평균흉경시영향괴균발생적관건인자。재일정범위내，괴균적발생표현출수욱폐도증가、파도감완、해발승고、교목평균고강저、관목평균고급교목평균흉경적증가이증가적추세。
Multivariate regression tree (MRT)methodology was used to systematically analyze the effect of dominant plant species and environmental factors on the occurrence of truffles in the Yanbian region of Sichuan Province.A total of 58 seed plant species belonging to 47 genera from 29 families,and four kinds of fern belonging to four genera from four families were identified.The dominant tree species were Pinus yunnanensis,Keteleeria evelyniana,Cyclobalanopsis glauca and Pistacia weinmannifolia,while Coriaria nepalensis,Rhododendron simsii and Rapanea neriifolia were the dominant shrub species. Ageratina adenophora,Eupatorium odoratum and Bidens pilosa were the dominant herbaceous species.The main truffle hosts in the region were P.yunnanensis,K.evelyniana,C.glauca and P.weinmannifolia.MRT revealed that Pteris cretica var.nervosa,A.adenophora,P.yunnanensis,B.pilosa,Juglans regia and P. weinmannifolia were the main plant species affecting the occurrence of tuffles,with P.cretica var. nervosa,A.adenophora and B.pilosa exercising a negative impact and P.yunnanensis,K.evelyniana and P.weinmannifolia a positive effect.Our data also indicated that canopy density,slope,elevation,average tree height and diameter,and average shrub height were the main factors impacting on truffle occurrence. Within our investigation range, truffle occurrence increased with increasing canopy density, elevation, average shrub height and average tree diameter,and decreased with decreasing slope and tree height.