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• W4313238224 abstract "PDF HTML阅读 XML下载 导出引用 引用提醒 极小种群野生植物密叶红豆杉(Taxus fuana)径向生长对气候的响应 DOI: 10.5846/stxb202111023073 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家重点研发计划项目（2016YFC0503100） Responses of radial growth to climate factors in a wild plant with extremely small populations, Taxus fuana Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:了解树木生长对气候的响应对过去气候重建和预测其对未来气候变化的响应都至关重要。就珍稀濒危树种而言，这还会有助于对其的有效保护。在中国红豆杉属珍稀濒危植物中，密叶红豆杉（Taxus fuana）分布面积最小，野外生存压力大，属于极小种群植物。运用年轮生态学方法，对西藏吉隆地区开热和吉普两地的密叶红豆杉种群进行树轮盘采样，分析了吉隆地区密叶红豆杉径向生长与温度和降水相关气候因子的相关性，旨在揭示影响密叶红豆杉生长的主要气候因子。结果表明，两个种群径向生长对温度的响应不同。开热种群密叶红豆杉径向生长与各月温度多呈显著正相关；吉普种群密叶红豆杉径向生长与各月温度的相关性较弱，且多为负相关，尤以3月份的最显著。两个种群的径向生长对降水的响应也不同。冬季休眠期（12月）的降水对开热种群密叶红豆杉径向生长呈负相关，而生长季初期（5月）和生长季末期（9月）的降水呈正相关。各月的降水对吉普种群密叶红豆杉的径向生长未表现出显著的影响。研究结果可为探讨气候变化下密叶红豆杉的适宜分布区、以及密叶红豆杉的保护和可持续管理提供参考。 Abstract:Understanding of tree-growth responses to climate is vital for past climate reconstruction and predicting the responses to future climate changes of trees. In terms of rare and endangered species, this will also help to effectively protect them. Among the rare and endangered plants of Taxus in China, Taxus fuana has the smallest distribution area and high field survival pressure, belonging to a very small population plant. In this study, dendroecology method was used to sample T. fuana populations from Kaire and Jipu in Gyirong, Tibet, we analyzed the correlation between radial growth of T. fuana and temperature and precipitation related climatic factors, aimed to reveal the main climatic factors affecting the growth of T. fuana in Gyirong area. The results showed that radial growth of the two populations had different responses to temperature. Radial growth of T. fuana in Kaire population had a significantly positive correlation with monthly temperature; the correlation between Jipu population and monthly temperature was weak and negative, especially in March. Radial growth of the two populations responded differently to precipitation. Precipitation in winter dormant period (December) negatively related to radial growth of T. fuana in Kaire population, while the precipitation in early growth period (May) and late growth period (September) positively related to radial growth of T. fuana. Monthly precipitation had no significant relations on the radial growth of T. fuana in Jipu population. The results can provide reference for exploring the suitable distribution area of T. fuana under climate change, as well as the protection and sustainable management of T. fuana. 参考文献 相似文献 引证文献" @default.
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• W4313238224 date "2022-01-01" @default.
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• W4313238224 title "Responses of radial growth to climate factors in a wild plant with extremely small populations, Taxus fuana" @default.
• W4313238224 doi "https://doi.org/10.5846/stxb202111023073" @default.
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