长白山东坡落叶松树轮宽度对气候响应的分离效应  

Response divergence of Larix olgensis tree-ring widths to climate variation in eastern slope of Changbai Mountain, northeast China

作　　者：于健[1] 徐倩倩[1,2] 何秀[3] 罗春旺[1] 刘文慧[1] 李俊清[1] 刘琪璟[1] 

机构地区：[1]北京林业大学林学院省部共建森林培育与保护教育部重点实验室,北京100083 [2]中国农业科学院郑州果树研究所,河南郑州450009 [3]中国科学院沈阳应用生态研究所,辽宁沈阳110016

出　　处：《中南林业科技大学学报》2013年第3期89-97,共9页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业专项资助项目(200804001)

摘　　要：为探讨近52年(1958～2009年)长白山地区树木生长对气候因子响应的异质性特征,以1989/1990年为分界点,利用响应函数及向前滑动相关分析等树轮气候学方法,研究了两个时间段(1958～1989年和1990～2009年)长白山东坡长白落叶松Larix olgensis与气候因子之间的响应关系。结果表明:(1)1958～1989年与1990～2009年温度指标差异呈极显著性水平。(2)1958～1989年时段树木生长分别与当年2月平均温度及上年12月最高温度呈显著负相关;1990～2009年时段落叶松生长与上年12月平均温度及降水量呈显著负相关,并与当年9月降水量呈显著负相关;1989年以后当年2月温度及9月降水量的增加对树木径向生长具有显著抑制作用。据此推断伴随着全球气候变暖,长白山地区树木生长对气候因子在两个时段上表现出了不同的响应特征,发生了响应模式的改变。The heterogeneity characteristics between tree-ring widths ofLarix olgensis and climate variations during recent 52 years （1958-2009） in Changbai Mountain were investigated, with the years of 1989/1990 as a cutoff point in the period of 1958-2009, by using response function and forward evolutionary intervals analysis method. The results show that between 1958-1989 and 1990-2009, temperature indicator difference was extremely significant; during the time period of 1958-1989, tree-ring widths ofL. olgensis had a significantly negative correlation with mean temperature in current year February and maximum temperature previous year December; during the time period of 1990-2009, tree-ring widths ofL. olgensis had a significantly negative correlation with mean temperature and precipitation in previous year December, and a significantly negative correlation with precipitation in current year September; tree-ring widths ofL. olgensis had a significantly negative correlation with mean temperature in current year February and precipitation in current year September after 1989. In conclusion, tree ring widths in the studied region behaved a different response characteristics and showed response to the change of mode to environmental factors under changing climate.

关 键 词：气候变化 落叶松 响应分离 树轮宽度 

分 类 号：S791.22[农业科学—林木遗传育种]