不同种源西伯利亚红松生长性状分析与评价OA北大核心CSTPCD

In this study,Pinus sibirica trees from 6 Russian provenances and one Mongolian provenance were taken as the research objects,which had been introduced to the Maoershan Experimental Forest Farm of Northeast Forestry University for 20 years.Local Pinus koraiensis,was used as the control.Growth differences of the trees from different provenances were compared and analyzed.The surviving trees and growth indexes of different provenances in the stands were investigated in 2022,and the ANOVA of each growth index was analyzed and it's heritability was estimated.Meawhile,the correlationships between the growth traits and geoclimatic factors of various provenance sites were analyzed,and the growth of P.sibir-ica of different provenances was comprehensively evaluated by using cluster analysis and fuzzy mathemati-cal affiliation function method.The results showed that after 20 years of introduction,the preservation rate of P.sibirica from different provenances varied greatly,and the differences in tree height,diameter at breast height(DBH)and average crown width traits were highly significant among the various prove-nances,and the variation rates were above 20％,all of which had high heritability.The growth of P.ko-raiensis was better than that of P.sibirica,and P.sibirica trees from Ulan-Ude and Tomsk provenances presented higher growth potential.The correlation between growth traits and climatic factors showed a continuous cold-warm geographical variation between the growth characteristics of P.sibirica and original climatic factors.The main geographic determinant of tree height growth of P.sibirica from different prov-enances was longitude,and the main climatic determinant was mean temperature in January;the main de-terminant of DBH and crown growth was mean temperature in July;and the main limiting factor affecting each growth trait was mean annual precipitation.Comprehensive ranking and cluster analysis of growth in-dicators by Fuzzy mathematical affiliation function method indicated that the average affiliation function value of P.sibirica from Ulan-Ude provenance was 1.65,followed by 1.62 of Tomsk provenance.After 20 years of planting,the growth characteristics of P.sibirica from different provenances differ somewhat.Among them,P.sibirica of Ulan-Ude and Tomsk provenances have better adaptability and high potential for application in the Maoershan area,and are priority provenances for future introduction.