长白落叶松人工林年轮宽度对气候变化的响应  

Response of Ring Width of Larix olgensis Plantation to Climate Change

作　　者：郭新月 王文彬 董灵波[1] GUO Xinyue;WANG Wenbin;DONG Lingbo(College of Forestry,Key Laboratory of Sustainable Forest Ecosystem and Management,Ministry of Education,Northeast Forestry University,Harbin 150040,China;Rizhao Academy of Agricultural Sciences,Rizhao 276800,China)

机构地区：[1]东北林业大学林学院森林生态系统可持续经营教育部重点实验室,哈尔滨150040 [2]日照市农业科学研究院,山东日照276800

出　　处：《森林工程》2024年第1期64-73,共10页Forest Engineering

基　　金：国家自然科学基金(32171778)。

摘　　要：为揭示长白落叶松(Larix olgensis)人工林早材、晚材和全材年轮宽度对气候的响应程度,以东北林业大学帽儿山实验林场27块样地的135株样木树芯为数据源,在建立树木年轮年表的基础上,采用相关性分析量化其早材、晚材和全材年轮宽度与气候要素的关系。结果表明,长白落叶松年轮宽度在时间尺度上可划分为2个明显不同的时间段,其中1974—1985年树木生长主要受春秋两季的温度影响,而1986—2019年则主要受夏季温度的影响。在1974—1985年,冬春季的最高温度和最低温度,特别是上一年和当年的1月和2月以及4月和5月与早材和全材年轮宽度的影响呈负相关的(P<0.05),与晚材年轮宽度的影响呈正相关(P<0.05);上一年和当年春季4、5月的无霜期与早材年轮宽度的影响呈负相关(P<0.05)。在1986—2019年,夏季尤其是上一年和当年6、7月的最高温度以及最低温度与晚材年轮宽度有显著的正相关性(P<0.05);夏季上一年和当年7月的平均温度与晚材年轮宽度的生长有显著的正相关性(P<0.05),但与早材和全材年轮宽度有显著的负相关性(P<0.05)。整体来看,生长季的温度尤其是最低温度和平均温度是限制长白落叶松人工林早材和晚材生长的主要因素,而降水对早材和晚材生长的影响则不显著。To reveal the response degree of ring width for earlywood,latewood,and ringwood of Larix olgensis plantation to climate change,135 sample trees from 27 sample plots in Maoershan Experimental Forest Farm of Northeast Forestry University were taken as data sources,based on the establishment of tree ring chronology,the correlation analysis was used to quantify the relationship between ring width earlywood,latewood,and ringwood and climate factors.Results showed that the ring width of L.olgensis can be divided into two distinct time periods on the time scale.During 1974-1985,the tree growth was mainly affected by the temperature in spring and autumn,while from 1986 to 2019,it was mainly affected by the temperature in summer.During 1974-1985,the highest and lowest temperaturesin winter and spring,especially in January,February,April and May of the previous year and that year,had a negative correlation(P<0.05) with the growth of earlywood and ringwood,but a positive correlation with the growth of latewood(P<0.05).The period in April and May of the previous year and the spring of that year had a negative correlation with the growth of ring width of earlywood(P<0.05).From 1986 to 2019,the highest and lowest temperatures in summer,especially in June and July of the previous year and that year,had a significant positive correlation with the ring width of latewood(P<0.05).The average temperature in summer,especially in July of the previous year and that year,had a significant positive correlation with the growth of latewood(P<0.05),but a significant negative correlation with the growth of ring width of earlywood and ringwood(P<0.05).On the whole,the temperature in the growing season,especially the minimum temperature and average temperature,are the main factors limiting the growth of earlywood and latewood of L.olgensis plantation,the effect of precipitation on the growth ofearlywood and latewood is not significant.

关 键 词：早材 晚材 全材 气候 年轮宽度 长白落叶松 

分 类 号：S757[农业科学—森林经理学]