气候变化领域集成服务门户(CCPortal): 天山东部西伯利亚落叶松树轮生长对气候要素的响应分析

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	天山东部西伯利亚落叶松树轮生长对气候要素的响应分析
其他题名	The responses of growth ring width variations of Larix sibirica Ledb to climatic change in eastern Tianshan Mountains
	彭剑峰; 勾晓华; 陈发虎; 李金豹; 刘普幸; 田沁花; 张永; 张永香
发表日期	2006
ISSN	1000-0933
卷号	26 期号:8 页码:2723-2731
中文摘要	天山东部西伯利亚落叶松的树木年轮学研究可以看出：森林上限树轮宽度年表之间相关性较高而下限年表间相关稍低，表明下限小生境要素对树木生长干扰较大。森林上下限树轮年表中样本的总解释量（ESP）和信噪比（SNR）都比较高，说明树木中都含有较多的环境信息；但标准年表中平均敏感度（M.S.）和轮宽指数的标准差（S.D.）都是森林上限数值低于下限，这表明森林上限树木生长对环境变化响应的敏感性降低；相关分析和响应分析也发现森林下限生长的树木对气候因子的响应较为显著。就温度而言，森林上限和下限表现基本一致，树木生长多与温度负相关，其中下限树木生长与春季均温和3～6月份均温显著负相关；降水表现出一定的差别，上限树木生长与春季、夏季及年降水量有较高的负相关，而对下限树木生长影响最大的则是冬季和3～6月份降水。湿润指数与降水基本一致即上限呈负相关而下限正相关，温暖指数全为负相关，寒冷指数下限负相关显著；显然该地区森林上下限树木生长的生态模式存在着一定的差异。研究发现，冬春季节的不同水热组合则是形成树木年轮宽窄的限制因素；同时，前期生长的滞后效应对年轮形成有重要的影响。
英文摘要	Tree-ring cores were collected for Larix sibirica Ledb from the upper and lower forest border in eastern Tianshan Mountains, northwestern China, and four ring-width chronologies were developed using 64-year spline function. The correlations of each standard ring-width chronology pair were different. The high correlation between the two chronologies from the upper forest border means they have the identical strong environmental information; and the less high correlation between chronologies of the lower forest border means they could have been disturbed by small different ecotypic forces. Comparison of chronological statistics showed that there were a lot of information in both the chronologies from the upper forest border and the lower forest border. However, lower mean sensitivity (M.S.) and less standard deviation (S.D.) of the upper forest border chronologies indicated trees growing had lower sensitivity to the climate change in the study area. There were different relationships between tree growth and the climate factors: all chronologies were negatively correlated with temperature, especially with the spring and March-June mean temperature at the lower forest border. Tree growth at the upper forest border was further negatively correlated with spring, summer and annual mean precipitation, while winter and March-June precipitation had great influence on tree-growth at the lower forest border. Radial growth showed negative correlation with humidity index at the upper forest border, but had significant positive correlations at the lower forest border. All tree radial growth was negatively correlated with warmth index, but only significant negative correlation with coldness index was found at the lower forest border. Thus, these results demonstrated there was a great diversity of ecological patterns at the upper and the lower forest border. The paper gave a particular analysis on the lag-effect of preseason tree-growth on ring-width, and found that preseason growth was one of the important factors influencing tree growth in the eastern Tianshan Mountains. Also, the paper analyzed the influence of previous and current year climate forces on the formation of the characteristic rings, i.e., the widest and the narrowest rings, and the results showed that the combination of atmosphere temperature and precipitation during last winter and current spring was the main limiting factor influencing the patterns of wide and narrow rings.
关键词	树木年轮标准年表气候因子前期生长滞后效应
英文关键词	tree ring;standard chronology;climate force;preseason growth;lag-effect
语种	中文
WOS研究方向	Geology
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
CSCD记录号	CSCD:2442645
来源期刊	生态学报
来源机构	兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1812
推荐引用方式 GB/T 7714	彭剑峰,勾晓华,陈发虎,等. 天山东部西伯利亚落叶松树轮生长对气候要素的响应分析[J]. 兰州大学, 中国科学院青藏高原研究所,2006,26(8):2723-2731.
APA	彭剑峰.,勾晓华.,陈发虎.,李金豹.,刘普幸.,...&张永香.(2006).天山东部西伯利亚落叶松树轮生长对气候要素的响应分析.生态学报,26(8),2723-2731.
MLA	彭剑峰,et al."天山东部西伯利亚落叶松树轮生长对气候要素的响应分析".生态学报 26.8(2006):2723-2731.