林业科学研究2025，Vol.38Issue(2)：1-11,11.DOI:10.12403/j.1001-1498.20240207
日本落叶松种源连年生长量与气候因子的关系
Relationship Between Climatic Factors and Annual Growth of Japanese Larch Provenance
摘要
Abstract
[Objective]Climate factors are crucial determinants of annual tree growth.This study investig-ates provenance variation in the growth of Larix kaempferi and its response to climatic factors,aiming to identify key climatic variables that influence growth.The study also provides scientific guidance for the in-troduction and cultivation of L.kaempferi in different regions.[Methods]The two provenance trials in Hubei and Liaoning Provinces included 4,500 L.kaempferi trees from six provenances.Annual growth traits were fitted using a logistic growth equation,while the provenance effect,genetic,and phenotypic variation coefficients were calculated using a mixed linear model.To identify key climatic factors,the Pear-son correlation model was employed,considering monthly maximum temperature,minimum temperature,mean temperature,temperature difference,and precipitation.Correlation coefficients were calculated between climate variables from 16 key months(spanning from the early growing season of June of the pre-vious year to the end of the current growing season in September)and annual growth for each location and provenance.[Results]In Hubei,the annual increase in diameter at breast height of L.kaempferi ex-hibited significant provenance variation,and the phenotypic variation coefficient of diameter at breast height was greater than that of tree height.The precipitation from P12(December of the previous year)to C1(January of the current year)had a significant negative effect on the annual increase in tree height(h,rp=-0.70,P<0.01).The maximum temperature of C8(August of the current year)and the average monthly temperature difference from C7(July of the current year)to C8 had a significant negative effect on the annual increase in diameter at breast height(d,rp=-0.68,-0.67,P<0.01).In Liaoning Province,the annual growth of d and h in the L.kaempferi provenance exhibited significant provenance variation.The maximum temperature of C7 had a significant negative effect on the annual growth of h and d(rp=-0.71,-0.84,P<0.01),and the rainfall of C4(in April of the current year)had a significant positive effect on the annual growth of d(rp=0.40).The provenance had a significant effect on the annual growth of d,and the sensitivity of the plus provenance Ina in Hubei to climatic factors was greater than that of the other provenances.[Conclusion]The effects of climate change on the annual d growth of L.kaempferi are more significant than those on the h growth.Although high summer temperatures are a key limiting factor for diameter growth,high spring temperatures favor it.In the relatively arid Liaoning region,precipitation during the growth initiation period is more beneficial for diameter growth,whereas in the humid Hubei re-gion,high winter precipitation negatively affects height growth in the following year.L.kaempferi trees planted in Liaoning Province are more sensitive to climate factors than those planted in Hubei Province.The Ina provenance is better suited to Hubei,while the Matsumoto provenance excels in Liaoning,making it well adapted to local climates and suitable for promotion in their respective regions.关键词
气候因子/落叶松/种源变异/连年生长量/相关关系Key words
Climate factor/Larix kaempferi/provenance variation/annual growth/correlation relationship分类
农业科技引用本文复制引用
张雅琳,吴春燕,谢允慧,孙晓梅..日本落叶松种源连年生长量与气候因子的关系[J].林业科学研究,2025,38(2):1-11,11.基金项目
"十四五"国家重点研发计划课题(2022YFD2200302)国家级 （2022YFD2200302）
中央级公益性科研院所基本科研业务费专项资金(LYSZX202002)省市级 （LYSZX202002）
