Ying-Jun DU, Shi-Jie Li, Li Wang, Shuai Yang, Xin-Ying Jia, Guang-Yu Tian, Fan-Suo Zeng, Ying Xin
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引用次数: 0
摘要
为了解不同产地梣树径向生长对气候因子的响应,我们采用树木年代学方法建立了毛儿山产地试验林20个产地梣树的标准年代学,并分析了径向生长的差异及其与气候因子的相关性。结果表明,20个产地的红豆杉年代学总体趋势基本相似。生长幅度存在差异,其中大岭、泸水河和三岔子的红豆杉平均径向生长量最高。除惠南外,20 个产地的曼殊兰径向生长量与 7 月最高气温和 7 月平均气温呈显著正相关。14 个产地的 F. mandshurica 的径向生长量与 8 月份的降水量呈显著正相关。在生长季节,曼殊兰的径向生长受到温度和降水的制约。在干旱胁迫下,不同产地的 F. mandshurica 的径向生长存在差异。汪清、大岭、海林等地出产的曼殊尔卡黄粉虫抗旱性较强,而湾甸子、沾河、兴隆等地出产的曼殊尔卡黄粉虫旱后恢复能力较强。
[Responses of radial growth of Fraxinus mandshurica from different provenances to climate at Maoershan in Northeast China].
To understand the responses of radial growth of Fraxinus mandshurica from different provenances to climatic factors, we used the dendrochronological method to establish the standard chronologies of F. mandshurica from 20 provenances in Maoershan provenance test forest, and analyzed the differences in radial growth and their correlation with climate factors. The results showed that the overall trend of F. mandshurica chronologies from 20 provenances was generally similar. There were differences in growth amplitude, with the average radial growth of F. mandshurica from Dailing, Lushuihe and Sanchazi being the highest. The radial growth of F. mandshurica from 20 provenances was significantly positively correlated with the highest temperature in July and the average temperature in July except for Huinan. The radial growth of F. mandshurica from 14 provenances was significantly positively correlated with the precipitation in August. The radial growth of F. mandshurica was constrained by temperature and precipitation during the growing season. There was difference in radial growth among F. mandshurica from different provenances under drought stress. F. mandshurica from Wangqing, Dailing, and Hailin had stronger resistance to drought, while that from Wandianzi, Zhanhe, and Xinglong had better recovery ability after drought.