气候因子对小兴安岭红松径向生长及固碳动态的影响  

Effect of Climate Factors on Carbon Sequestration Dynamics and Radial Growth of Pinus koraiensis in Xiaoxing’an Mountains

作　　者：韩丽冬 沃晓棠 刘玉龙 陈瑶 李云红 田松岩 Han Lidong;Wo Xiaotang;Liu Yulong;Chen Yao;Li Yunhong;Tian Songyan(Key Laboratory of Forest Ecology and Forestry Ecological Engineering in Heilongjiang Province,Heilongjiang Ecology Institute,Harbin 150081,P.R.China)

机构地区：[1]黑龙江省森林生态与林业生态工程重点实验室(黑龙江省生态研究所),哈尔滨150080

出　　处：《东北林业大学学报》2021年第8期31-35,共5页Journal of Northeast Forestry University

基　　金：黑龙江省自然科学基金联合引导项目(LH2021C093);国家自然科学基金面上项目(41275154)。

摘　　要：以黑龙江丰林国家级自然保护区(128°58′~129°15′E,48°2′~48°12′N)为试验地,测量并计算小兴安岭阔叶红松林优势树种红松(Pinus koraiensis)生长轮宽度,应用树木年代学原理及气候时间序列分析方法,分析红松固碳动态、气候因子对红松径向生长及固碳的影响。结果表明:红松固碳,与上年12月份和当年8、9月份的月平均气温呈极显著负相关(P<0.01),与上年12月份降水量呈显著负相关(P<0.05)、与当年5月份降水量呈显著正相关(P<0.05);固碳大年,气温偏低月份出现在夏季(除1997年),其中2 a(1964、1969年)夏季各月份(6-8月份)气温均偏低,其它年夏季有2个月份气温偏低,固碳大年降水量偏多月份多出现在夏季不同月份。说明夏季气温对红松径向生长有抑制作用,气温越高,越容易形成窄生长轮,夏季降水量对小兴安岭地区红松的固碳有促进作用,此时降水越多,越容易形成宽生长轮。Using the Heilongjiang Fenglin National Nature Reserve(128°58′-129°15′E,48°2′-48°12′N)as the experimental site,we measured and calculated the growth whorl width of Pinus koraiensis,the dominant tree species in the broad-leaved red pine forests in the Xiaoxing’an Mountains,and applied the principles of dendrochronology and climate time series analysis to analyze the carbon sequestration dynamics of P.koraiensis and explore the influence of climate factors.The results showed that carbon sequestration in P.koraiensis was negatively correlated with the mean monthly temperature in December of the previous year and in August and September of the same year(P<0.01),with precipitation in December of the previous year(P<0.05)and with precipitation in May of the same year(P<0.05).In the big carbon sequestration years,the low temperature months occurred in summer(except 1997),among which 2 years of 1964 and 1969 had low temperature in all summer months(June-August)and 2 other years had low temperature in summer,and the high precipitation months in the big carbon sequestration years occurred in May in spring and different months in summer.Summer temperatures have an inhibiting effect on radial growth of P.koraiensis.The higher the temperature,the more likely it is to form narrow growth whorls.Summer precipitation contributes to carbon sequestration in P.koraiensis in the Xiaoxing’an Mountains.The higher the precipitation in summer is,the more likely it is to form wide growth whorls.

关 键 词：小兴安岭 红松 固碳 气候 

分 类 号：S718.5[农业科学—林学]