植物研究2012，Vol.32Issue(2)：191-197,7.
帽儿山地区兴安落叶松人工林树木年轮气候学研究
Tree-ring Climatology of Larix gmelinii in Maoershan Region, Northeastern China
摘要
Abstract
Through collecting the meteorological data, sampling and standardizing the data of tree rings of larch (Larix gmelinii) , the climatic changes in Maoershan region were analyzed and their influences on tree ring features were studied in this paper. In the past 50 years, significant increases in temperature were found (p < 0. 05 ) , I. E. About 0. 4℃ per decade in average annual temperature, 0. 3℃ per decade in average annual maximum temperature as well as 0. 5℃ per decade in annual average minimum temperature were observed. However, no significant change in annual precipitation was found (p >0.05). Average monthly temperature (average temperature , average maximum temperature, average minimum temperature) also showed increasing tendencies and the most significant month was in February of the winter, about 0. 9 -1℃ per decade. Much smaller temperature increases, ca. 0.2 -0.7℃ per decade was found in June to August of the summer). No significant change in monthly precipitation was found in most months (p >0. 05) . During the coming climate warming, widths of early and whole tree rings (p <0. 05) might be decreased with the temperature increment in summer (June to July) , while widths of early and the growth of tree rings would increase with the temperature increases in spring ( May) . The width of late might be increased with the temperature increases in autumn (September). These might cause the non-obvious change in ring width with annual temperature changes (p >0. 05). Although non-significant changes in precipitations, the significant correlations between annual precipitation and variable tree rings indices indicated the growths of early wood and whole tree rings might be positivity affected by the amount of annual precipitations. Considering the warming trend of the climate change is significant in northeast China in future but the rainfall does not. The growth of tree rings caused by spring and autumn temperatures could be offseted by too high temperatures in summer which inhibited the tree ring growth. Therefore, the influence on the radial growth of the Larix might be little.关键词
兴安落叶松/早材/晚材/年轮宽度/气候因子Key words
Larix gmelinii/early wood/late wood/ring width/meterological factor分类
农业科技引用本文复制引用
郑广宇,王文杰,王晓春,于景华,刘丹,邱岭,祖元刚..帽儿山地区兴安落叶松人工林树木年轮气候学研究[J].植物研究,2012,32(2):191-197,7.基金项目
国家自然基金(40873063、31170575) （40873063、31170575）
中央高校基本科研业务费专项资金项目(DL09C\17) （DL09C\17）
中国博士后基金(20080430126)和人事部留学归国博士后入站项目资助 （20080430126）
