Topography- and Species-Dependent Climatic Responses in Radial Growth of Picea meyeri and Larix principis-rupprechtii in the Luyashan Mountains of North-Central China
Topography- and Species-Dependent Climatic Responses in Radial Growth of Picea meyeri and Larix principis-rupprechtii in the Luyashan Mountains of North-Central China
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DOI：
10.3390/f6010116
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发表时间：
2015-01
期刊：
影响因子：
2.9
通讯作者：
Wentao Zhang;Yuan Jiang;Mingchang Wang;Lingnan Zhang;Manyu Dong
中科院分区：
文献类型：
--
作者：
Wentao Zhang;Yuan Jiang;Mingchang Wang;Lingnan Zhang;Manyu Dong
采用树木生态学方法，研究了芦芽山白云杉和华北落叶松径向生长与地形、气候因子的关系。在林线上选择4个样地，共采集67株树木和134个样芯。皮尔森相关和回归曲面分析，以揭示生长与气候的关系。结果表明，在两个地形上，这两个物种都与前11月的温度呈显著负相关。在两个坡面上，白背杨的生长与当年6月的降水量呈显著负相关，而白背杨的生长与当年6月的降水量呈显著负相关。华北落叶松与前9月降水量呈显著负相关。在北坡，树木生长初期受低温的限制，而在南坡则没有。如果气候变暖继续下去，L。华北落叶松可能更受青睐，树木生长与温度和降水的关系可能相反。北向坡上的树线位置可能比南向坡具有更大的高程移动潜力。研究结果为探讨未来气候对中北部森林生长的潜在影响提供了有用的信息。
Dendroecological techniques were used to examine the relationships between topographic aspects, climate factors and radial growth of Picea meyeri and Larix principis-rupprechtii in Luyashan Mountains, North-Central China. Four sites were selected at timberline and totally 67 trees and 134 cores were collected. Pearson correlation and regression surface analysis were conducted to reveal the growth-climate relationships. The results indicated that the two species both showed significant negative correlations with temperature during preceding November on the two topographic aspects. On both slope aspects, growth of P. meyeri exhibited significant negative correlations with precipitation in current June, whereas growth of L. principis-rupprechtii showed significant negative correlations with precipitation in preceding September. On north-facing slope, tree growth was limited by low temperature in early growing season, which not shown on south-facing slope. If climate warming continues, L. principis-rupprechtii may be more favored and a reverse between relationships with temperature and precipitation maybe occur in growth of trees. Treeline position on the north-facing slope may possess a greater potential for elevation shifting than the south-facing slope. Our results supply useful information for discussing the potential effect of future climate on the forest growth in North-Central China.