西藏西部高寒气候下古柏群树木的生长策略

doi:10.13287/j.1001-9332.202605.003

应用生态学报 ›› 2026, Vol. 37 ›› Issue (5): 1459-1465.doi: 10.13287/j.1001-9332.202605.003

西藏西部高寒气候下古柏群树木的生长策略

旦增欧珠¹, 喻武^1*, 潘刚¹, 滕洪芬², 牟玉梅³

¹西藏农牧大学资源与环境学院, 西藏林芝 860000;
²武汉工程大学环境生态与生物工程学院, 武汉 430205;
³西北农林科技大学林学院, 水土保持与荒漠化整治全国重点实验室, 陕西杨凌 712100

收稿日期:2025-12-08 接受日期:2026-03-09 出版日期:2026-05-18 发布日期:2026-11-18
通讯作者: * E-mail: yuwu4270@126.com
作者简介:旦增欧珠, 男, 1996年生, 硕士研究生。主要从事古树生长与森林生态研究。E-mail: 2686234170@qq.com
基金资助:
国家自然科学基金项目(32271886,32201353)、西藏农牧大学树木年轮学团队创新项目(XZA-JYBSYS-2023-31)和西藏农牧大学研究生教育创新计划项目(YJS2024-36)

Growth strategy of Juniperus tibetica ancient clusters under high-altitude and cold conditions in western Xizang, China.

DANZENG Ouzhu¹, YU Wu^1*, PAN Gang¹, TENG Hongfen², MU Yumei³

¹College of Resources and Environment, Xizang Agricultural and Animal Husbandry University, Linzhi 860000, Xizang, China;
²School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China;
³State Key Laboratory of Soil and Water Conservation and Desertification Control, College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China

Received:2025-12-08 Accepted:2026-03-09 Online:2026-05-18 Published:2026-11-18

摘要/Abstract

摘要： 为理解树木在极端逆境下如何维持长寿,本研究以西藏西部昂仁县高寒气候下4个大果圆柏古树群为研究对象,对64棵大果圆柏古树在过去170年(1855—2024年)的生长历史开展了树木年轮学研究,分析高寒气候下古柏群树木的生长策略。结果表明:64棵大果圆柏古树的树龄均超过100年,最老的个体达到438年;树木径向生长与6—9月气温呈显著负相关,与同期总降水量呈显著正相关,与8月标准化降水蒸散指数(SPEI)呈显著正相关;1855—2024年间,树木年轮平均宽度为0.87 mm,个体间生长差异显著,标准差为0.66 mm;在6次树轮极端窄年(1914、1958、1966、1983、2010和2016年)中,大果圆柏表现出的抵抗力和韧性存在较大的个体差异。树木整体生长缓慢且个体间生长差异显著,共同支撑古柏群在极端逆境下维持长寿。

关键词: 古树, 大果圆柏, 干扰, 生态韧性

Abstract: To understand how trees maintain longevity under extreme stress, we examined four clusters of ancient Juniperus tibetica) growing under high-elevation and cold conditions in western Xizang. The growth history of 64 ancient trees during A.D. 1855-2024 (170 years) was quantified using dendrochronological methods to analyze the growth strategies of ancient-tree clusters under alpine climatic conditions. The results showed that all the 64 juniper trees were over 100 years old, with the oldest reaching 438 years. The radial growth of trees was negatively correlated with temperature in June to September, positively correlated with total precipitation in the same season and the standard precipitation-evaporation indices (SPEI) in August. The average of ring widths across all samples in the period 1855-2024 was 0.87 mm, with apparent growth difference among individual trees, and standard deviation was 0.66 mm. The resistance and resilience of trees to six events of extreme narrow rings (1914, 1958, 1966, 1983, 2010, and 2016) also showed high variability among individuals. Slow and diverse growth are the strategy of ancient-tree clusters to maintain longevity under extreme adversity.

Key words: ancient tree, Juniperus tibetica, disturbance, ecological resilience

旦增欧珠, 喻武, 潘刚, 滕洪芬, 牟玉梅. 西藏西部高寒气候下古柏群树木的生长策略[J]. 应用生态学报, 2026, 37(5): 1459-1465.

DANZENG Ouzhu, YU Wu, PAN Gang, TENG Hongfen, MU Yumei. Growth strategy of Juniperus tibetica ancient clusters under high-altitude and cold conditions in western Xizang, China.[J]. Chinese Journal of Applied Ecology, 2026, 37(5): 1459-1465.

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西藏西部高寒气候下古柏群树木的生长策略

Growth strategy of Juniperus tibetica ancient clusters under high-altitude and cold conditions in western Xizang, China.

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