树木年内径向生长对干旱事件的响应——以贺兰山油松为例

doi:10.13287/j.1001-9332.202110.015

应用生态学报 ›› 2021, Vol. 32 ›› Issue (10): 3505-3511.doi: 10.13287/j.1001-9332.202110.015

树木年内径向生长对干旱事件的响应——以贺兰山油松为例

高佳妮^1,2, 杨保^1*, 秦春¹

¹中国科学院西北生态环境资源研究院, 沙漠与沙漠化重点实验室, 兰州 730000;
²中国科学院大学, 北京 100049

收稿日期:2021-04-14 修回日期:2021-07-23 出版日期:2021-10-15 发布日期:2022-04-15
通讯作者: * E-mail: yangbao@lzb.ac.cn
作者简介:高佳妮, 女, 1994年生, 博士研究生。主要从事树轮生态学研究。E-mail: gaojiani@lzb.ac.cn
基金资助:
国家自然科学基金项目(41520104005)、国家重点研发计划项目(2017YFA0603301)和中国科学院西北生态环境资源研究院自主部署项目(E055020101,Y951971001)资助

Response of intra-annual stem radial growth to drought events: A case study of Pinus tabuliformis in the Helan Mountains, China

GAO Jia-ni^1,2, YANG Bao^1*, QIN Chun¹

¹Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000;
²University of Chinese Academy of Sciences, Beijing 100049

Received:2021-04-14 Revised:2021-07-23 Online:2021-10-15 Published:2022-04-15
Contact: * E-mail: yangbao@lzb.ac.cn
Supported by:
National Natural Science Foundation of China (41520104005), the National Key R&D Program of China (2017YFA0603301), and the Autonomous Deployment Project of Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences (E055020101, Y951971001).

摘要/Abstract

摘要： 在贺兰山苏峪口国家森林公园,利用径向生长测量仪监测2017和2018年2个生长季内、2个海拔(2010和2330 m)油松的径向生长,研究树木径向生长对干旱的响应。结果表明: 2018年6月的干旱事件使得油松径向生长速率减慢,生长量减小;而7—8月的降水使油松的径向生长重新激活。2018年油松的径向生长主要发生在6—8月,相比2017年延长一个月。油松径向生长与气候因子的响应关系在不同海拔间没有明显的差异。生长季早期干旱对树木径向生长有抑制作用,生长季中后期降水对树木径向生长具有促进作用。该区的气候重建工作中应当充分考虑8月的气候要素对树轮宽度的影响。

关键词: 径向生长, 干旱, 海拔, 径向生长测量仪, 油松

Abstract: The stem radius growth of Pinus tabuliformis was monitored by dendrometer during the growing season in 2017 and 2018 at two altitudes (2010 and 2330 m) in the Helan Mountains. We investigated the responses of tree radial growth to drought events. The results showed that drought event in June 2018 reduced stem growth rate of P. tabuliformis. The precipitation in July and August reactivated the stem radius growth. The main growing season of P. tabuliformis stem was June-August in 2018, which was a month longer than that in 2017. The response patterns between stem radial growth of P. tabuliformis and climatic factors were consistent across forest stands in different altitudes. Drought in the early growing season suppressed the radial growth of trees, while precipitation in the mid- and late growing seasons played an important role in promoting the radial growth of trees. The effects of climatic factors in August on tree-ring width should be considered during climate reconstruction in this region.

Key words: stem radial growth, drought, altitude, Dendrometer, Pinus tabuliformis

高佳妮, 杨保, 秦春. 树木年内径向生长对干旱事件的响应——以贺兰山油松为例[J]. 应用生态学报, 2021, 32(10): 3505-3511.

GAO Jia-ni, YANG Bao, QIN Chun. Response of intra-annual stem radial growth to drought events: A case study of Pinus tabuliformis in the Helan Mountains, China[J]. Chinese Journal of Applied Ecology, 2021, 32(10): 3505-3511.

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树木年内径向生长对干旱事件的响应——以贺兰山油松为例

Response of intra-annual stem radial growth to drought events: A case study of Pinus tabuliformis in the Helan Mountains, China

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