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

作　　者：张雅琳 吴春燕 谢允慧[1] 孙晓梅[1] ZHANG Ya-lin;WU Chun-yan;XIE Yun-hui;SUN Xiao-mei(Research Institute of Forestry,CAF,Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091,China)

机构地区：[1]中国林业科学研究院林业研究所,林木遗传育种全国重点实验室,国家林业和草原局林木培育重点实验室,北京100091

出　　处：《林业科学研究》2025年第2期1-11,共11页Forest Research

基　　金："十四五"国家重点研发计划课题(2022YFD2200302)国家级;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。

摘　　要：[目的]气候因子是影响树木连年生长量的重要因素,本研究旨在揭示日本落叶松生长性状的种源变异及对气候因子的响应,确定影响树木生长动态的关键气候因子,为日本落叶松引种及培育提供科学依据。[方法]基于1998年营建于湖北长岭岗林场和辽宁大孤家林场的种源试验林,基于6个种源4500株日本落叶松连年树高和胸径连年生长量观测数据及当地气候数据,通过Logistic生长方程拟合1~17年树高及胸径连年生长量作为表型性状,利用混合线性模型计算性状的种源效应及遗传、表型变异系数,同时,基于Pearson相关分析模型扩展关键气候因子的识别时间范围,分析种源变异及不同气候区对种源生长影响的动态变化。以月高温、月低温、月均温、月温差和降水5个关键气候因子为自变量,对上一年生长季前期(6月)至当年生长季末期(9月)的16个关键月份进行组合,分别计算各地点及种源在不同时期气候变量与相应年份连年生长量之间的相关系数。[结果]湖北地区,日本落叶松胸径连年生长量存在显著的种源变异,胸径表型变异系数高于树高。前一年12月份(P12)至当年1月份(C1)的降水对树高连年生长量存在显著负效应(r_(p)=-0.70;p<0.01),当年8月份(C8)的最高温及当年7月份(C7)至C8的平均月温差对胸径连年生长量存在显著负效应(r_(p)=-0.68,-0.67;p<0.01)。辽宁地区,日本落叶松胸径和树高连年生长量均存在显著的种源变异。C7的最高温对树高及胸径连年生长量存在显著负效应(r_(p)=-0.71,-0.84;p<0.01),当年4月份(C4)的降水对胸径连年生长量有显著正效应(r_(p)=0.40;p<0.1)。[结论]两个气候区的种源试验结果表明,日本落叶松胸径连年生长量的种源效应比树高更为显著。尽管夏季高温是限制日本落叶松胸径生长的关键气候因子,但春季高温和夏季降水对胸径生长有利。在相对干旱的辽宁地区,生长[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,r_(p)=-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 r_(p)=-0.68,-0.67,P<0.01the annual increase in diameter at breast height(d,).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()

关 键 词：气候因子 落叶松 种源变异 连年生长量 相关关系 

分 类 号：S722[农业科学—林木遗传育种]