Variability of climate-growth relationships along an elevation gradient in the Changbai Mountain, northeastern China
Variability of climate-growth relationships along an elevation gradient in the Changbai Mountain, northeastern China
复制标题
中国东北长白山海拔梯度气候与生长关系的变化
DOI：
10.1007/s00468-011-0588-0
复制
发表时间：
2011-12-01
影响因子：
2.3
通讯作者：
Pan, Tao
中科院分区：
文献类型：
--
作者：
Chen, Li;Wu, Shaohong;Pan, Tao
为了探索不同海拔气候与生长的关系，从中国东北长白山北坡的三个采样点开发了落叶松（Larix olgensis）的年轮宽度年表。由于森林内部的树木具有自满的生长模式，因此沿海拔梯度的树木年轮统计特征没有一致的趋势。使用月平均气温和月总降水量进行分析。相关分析表明，冬季气温与树木生长呈负相关（低海拔、中海拔和高海拔地区分别为去年11月、12月和今年3月）。树木生长与六月温度之间的相关性从低海拔地区的弱负相关性到高海拔地区的显着正相关性不等。生长年6月降水量与高海拔年代呈负相关。然而，高降水量与生长季节早期的低温有关，进一步证明温度是高海拔地区的生长限制因素。我们的结果表明，沿着海拔梯度，L. olgensis 可能以不同的方式对当地气候变化做出反应。
In order to explore climate-growth relationships at different elevations, tree-ring width chronologies of larch (Larix olgensis) were developed from three sampling sites on the northern slope of the Changbai Mountain, northeastern China. There were no consistent trends in statistical characteristics of the tree-ring chronologies along the elevation gradient, since trees in the forest interior had a complacent growth pattern. Monthly mean temperature and monthly total precipitation were used for the analysis. Correlation analysis indicated that temperatures in winter had negative correlations with tree growth (previous November, December and current March for the low-, mid- and high-elevation sites, respectively). The correlations between tree growth and June temperature varied from weakly negative at low elevations to significantly positive at high elevations. Precipitation in June of the growth year had negative relationship with the high-elevation chronology. However, high precipitation was associated with low temperature in early growing season, further supporting that temperature is a growth-limiting factor at high elevations. Our results suggest that along the elevation gradient, L. olgensis may respond in different ways to local climate change.