| 祁连山中部低海拔地区青海云杉径向生长的气候响应机制 |
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| 引用本文： | 王延芳,张永香,勾晓华,高琳琳,王放. 祁连山中部低海拔地区青海云杉径向生长的气候响应机制[J]. 生态学报, 2020, 40(1): 161-169 |
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| 作者姓名： | 王延芳 张永香 勾晓华 高琳琳 王放 |
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| 作者单位： | 兰州大学资源环境学院 西部环境教育部重点实验室, 兰州 730000,中国气象局国家气候中心, 北京 100081,兰州大学资源环境学院 西部环境教育部重点实验室, 兰州 730000,兰州大学资源环境学院 西部环境教育部重点实验室, 兰州 730000,兰州大学资源环境学院 西部环境教育部重点实验室, 兰州 730000 |
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| 基金项目： | 中央高校基本科研业务（lzujbky-2017-it102）；国家自然科学基金项目（41401058，41701048，41771046） |
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| 摘 要： | 利用生理模型开展树木径向生长的气候响应机制研究对理解树木生长的生理机制、预估气候变化情景下森林生态系统的变化、提供森林保护管理的建议有重要意义。以祁连山中部低海拔地区青海云杉树轮记录为依据,利用Vaganov-Shashkin模型模拟青海云杉(Picea crassifolia)的径向生长,探讨青海云杉径向生长的生理机制。结果表明:降水对祁连山中部低海拔地区青海云杉径向生长起着决定性作用,5—8月份的降水直接影响当年青海云杉的径向生长,9月份的降水量影响翌年青海云杉的径向生长。根据本研究结果,水分是限制青海云杉径向生长的主要因子,建议青海云杉人工林种植时,可在5—8月份对青海云杉增加灌溉量。
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| 关 键 词： | 青海云杉 径向生长 响应 生理机制 |
| 收稿时间： | 2018-11-02 |
| 修稿时间： | 2019-08-26 |
Climate response mechanism of radial growth of Picea crassifolia in low altitude area of middle Qilian Mountains |
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| WANG Yanfang,ZHANG Yongxiang,GOU Xiaohu,GAO Linlin and WANG Fang. Climate response mechanism of radial growth of Picea crassifolia in low altitude area of middle Qilian Mountains[J]. Acta Ecologica Sinica, 2020, 40(1): 161-169 |
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| Authors: | WANG Yanfang ZHANG Yongxiang GOU Xiaohu GAO Linlin WANG Fang |
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| Affiliation: | Key Laboratory of Western China''s Environmental Systems(Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China,National Climate Center, China Meteorological Administration, Beijing 100081, China,Key Laboratory of Western China''s Environmental Systems(Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China,Key Laboratory of Western China''s Environmental Systems(Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China and Key Laboratory of Western China''s Environmental Systems(Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | To study the climate response mechanism of tree radial growth using physiological models is important for understanding the physiological mechanism of tree growth, predicting changes of forest ecosystem in climate change scenarios, and providing suggestions for forest protection and management. Based on the tree-ring records of Picea crassifolia in the middle of the Qilian Mountains, the Vaganov-Shashkin model was used to simulate the radial growth of Picea crassifolia. The physiological mechanism of the radial growth of Picea crassifolia was also discussed. The results showed that precipitation was the main factor affecting the radial growth of Picea crassifolia in low altitude area of middle Qilian Mountains. Precipitation from May to August directly affected the radial growth of Picea crassifolia, and precipitation in last September also affected the radial growth of Picea crassifolia. It is suggested that the irrigation amount should be increased appropriately in May-August in afforestation of Picea crassifolia. |
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| Keywords: | Picea crassifolia radial growth response physiological mechanism |
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