Responses of ring widths and maximum densities of Larix gmelinii to climate on contrasting north- and south-facing slopes in central Siberia
Responses of ring widths and maximum densities of Larix gmelinii to climate on contrasting north- and south-facing slopes in central Siberia
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DOI：
10.1007/s11284-006-0062-4
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发表时间：
2007-07
影响因子：
2
通讯作者：
J. Kujansuu;K. Yasue;T. Koike;A. P. Abaimov;T. Kajimoto;T. Takeda;M. Tokumoto;Y. Matsuura
中科院分区：
文献类型：
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作者：
J. Kujansuu;K. Yasue;T. Koike;A. P. Abaimov;T. Kajimoto;T. Takeda;M. Tokumoto;Y. Matsuura
对落叶松径向生长的气候响应进行了分析。在西伯利亚中部图拉的两个地点（两个地点都包括对比鲜明的北向和南向斜坡），开发了每个斜坡的环宽度和最大密度年表。所有四个斜坡上从五月下旬到六月中旬的剩余年轮宽度和标准年轮宽度均与温度呈正相关。相比之下，在站点 1 的北坡和站点 2 的南坡上，年轮宽度的标准年表分别与冬季（10 月至 4 月）和 5 月的降水量呈负相关。一些斜坡上冬季和5月降水量与降水量呈负相关，表明早春融雪延迟可能会抑制L.的径向生长。 gmelinii，雪的影响可能会因地形而异。所有四个斜坡上最大密度的剩余年表和标准年表均与七月初的温度呈正相关。所有斜坡上的最大密度也与前一年夏季的降水量呈正相关。这表明北坡和南坡最大密度对气候因素的响应不存在重大差异。
An analysis was performed of the climatic responses of the radial growth ofLarix gmelinii(Rupr.) Rupr. at two sites—both of which included contrasting north‐ and south‐facing slopes—in Tura, central Siberia, with the development of ring width and maximum‐density chronologies for each slope. Both residual and standard chronologies of ring widths were positively correlated with temperature from late May until mid June on all four slopes. By contrast, standard chronologies of ring widths were negatively correlated with precipitation during the winter (from October to April) and in May on the north‐facing slope at site 1 and on the south‐facing slope at site 2 respectively. The negative correlations with precipitation during the winter and in May on some of the slopes suggested that delayed snowmelt in early spring might inhibit the radial growth ofL. gmelinii, and the effects of snow are likely to vary with topography. Both residual and standard chronologies of maximum densities were positively correlated with temperature in early July on all four slopes. Maximum densities were also positively correlated with precipitation during summer of the previous year on all the slopes. These suggest that no major differences exist in terms of responses of maximum density to climatic factors between the north‐ and south‐facing slopes.