Climate-growth relationships of subalpine fir (Abies fargesii) across the altitudinal range in the Shennongjia Mountains, central China
Climate-growth relationships of subalpine fir (Abies fargesii) across the altitudinal range in the Shennongjia Mountains, central China
复制标题
中国中部神农架山不同海拔区间亚高山冷杉（Abies fargesii）的气候与生长关系
DOI：
10.1007/s10584-012-0611-5
复制
发表时间：
2013-04-01
期刊：
影响因子：
4.8
通讯作者：
Zhang, Quanfa
中科院分区：
文献类型：
--
作者：
Dang, Haishan;Zhang, Yanjun;Zhang, Quanfa
采用树木生态学方法研究了神农架亚高山冷杉（Abies fargesii）生长对南北两个海拔高度气候条件的响应。相关函数分析表明，夏季气温与杉木径向生长下限呈显著负相关，而前秋和春季气温与杉木径向生长中、高海拔呈显著正相关。亚高山冷杉的径向生长在低海拔地区的前秋季和当年春季的降水量显着和积极的影响，并在当年春季的降水量在中海拔地区，而降水量没有显着的影响，其在高海拔地区的径向生长。移动相关函数表明，当年早春的温度（即，2 - 4月）对中、高海拔树木生长的影响相对稳定。因此，亚高山冷杉的生长对气候条件的响应在海拔梯度上沿着不同，表明随着海拔的升高，温度对冷杉径向生长的重要性增加，而降水的重要性降低。
Dendroecological techniques were employed to explore the growth response of subalpine fir (Abies fargesii) to climatic conditions across its altitudinal range in both the north and south aspects in the Shennongjia Mountains, central China. Correlation function analyses indicated that temperatures in current summer were significantly negatively correlated with fir radial growth at the lower limits, while temperatures in previous autumn and in current spring showed significantly positive correlations with fir radial growth at the mid- and high-elevations in both aspects. Radial growth of the subalpine fir was significantly and positively influenced by precipitation in previous autumn and in current spring at the lower elevations and by precipitation in current spring at the mid-elevations, while precipitation had no significant effects on its radial growth at the upper elevations. Moving correlation functions showed that temperatures in early spring of the current year (i.e., February-April) had a relatively stable effect on tree growth over time at the mid- and upper-elevations in both aspects. Thus, the growth of the subalpine fir responded differently to climatic conditions along the altitudinal gradient, showing that the importance of temperatures for the fir radial growth increased while the importance of precipitation decreased with increasing altitude in both aspects in the Shennongjia Mountains, central China.