亚热带人工和天然马尾松、杉木林生长对干旱的生态弹性差异

doi:10.13287/j.1001-9332.202110.035

应用生态学报 ›› 2021, Vol. 32 ›› Issue (10): 3531-3538.doi: 10.13287/j.1001-9332.202110.035

亚热带人工和天然马尾松、杉木林生长对干旱的生态弹性差异

曹新光^1,2, 胡红兵¹, 李颖俊³, 董志鹏², 卢晓蓉⁴, 白毛伟², 郑壮鹏², 方克艳^2*

¹黄冈师范学院地理与旅游学院, 湖北黄冈 438000;
²福建师范大学湿润亚热带生态-地理过程教育部重点实验室, 福州 350007;
³太原师范学院历史地理与环境变迁研究所, 山西晋中 030619;
⁴华东师范大学生态与环境科学学院, 上海 200062

收稿日期:2021-06-29 修回日期:2021-08-28 出版日期:2021-10-15 发布日期:2022-04-15
通讯作者: * E-mail: kfang@fjnu.edu.cn
作者简介:曹新光, 男, 1986年生, 讲师。主要从事树轮气候与树轮生态学研究。E-mail: caoxinguang@163.com
基金资助:
国家自然科学基金项目(41971022,41822101,41888101,41801016)、湖北省教育厅科学研究计划指导性项目(B2020164)和湖北省人文社科重点研究基地大别山旅游经济与文化研究中心开放课题(2021)资助

Differences in the ecological resilience of planted and natural Pinus massoniana and Cunninghamia lanceolata forests in response to drought in subtropical China

CAO Xin-guang^1,2, HU Hong-bing¹, LI Ying-jun³, DONG Zhi-peng², LU Xiao-rong⁴, BAI Mao-wei², ZHENG Zhuang-peng², FANG Ke-yan^2*

¹College of Geography and Tourism, Huanggang Normal University, Huanggang 438000, Hubei, China;
²Ministry of Education Key Laboratory of Humid Subtropical Eco-geographical Process, Fujian Normal University, Fuzhou 350007, China;
³Institution of Historical Geographical and Environment Change, Taiyuan Normal University, Jinzhong 030619, Shanxi, China;
⁴School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, China

Received:2021-06-29 Revised:2021-08-28 Online:2021-10-15 Published:2022-04-15
Contact: * E-mail: kfang@fjnu.edu.cn
Supported by:
National Science Foundation of China (41971022, 41822101, 41888101, 41801016), the Hubei Provincial Education Department Scientific Research Program (B2020164), and the Open Project of Dabie Mountain Tourism Economy and Culture Research Center, Key Research Base of Humanities and Social Sciences in Hubei Province (2021).

摘要/Abstract

摘要： 选取福建中西部地区相似气候条件下马尾松和杉木的天然林和人工林进行研究,利用年轮宽度、年轮宽度指数和断面积增量重建了4种林型共109株松树20年(1993—2012年)的年生长量,计算其对连续两次极端干旱事件(2003—2004年和2011年)的抵抗力、恢复力和弹性指数,分析人工林和天然林在抵抗力和弹性方面的差异。结果表明:马尾松和杉木对水分的需求在时间上存在差异,这解释了其对2003—2004年干旱事件的响应不一致。干旱压力极大地降低了马尾松和杉木的生长,但树木生长并未表现出干旱遗留效应。受干旱强度的影响,4种林型径向生长对2003—2004年干旱的响应强于2011年。干旱事件后马尾松比杉木具有更强的恢复能力;天然林比人工林对干旱的敏感性更高,同时弹性也更大。杉木人工林更容易受到频发的极端干旱事件的影响,在人工林抚育管理中应选择抗旱能力较强的遗传种源,以应对气候变暖导致的干旱频发。

关键词: 树轮, 生态弹性, 干旱

Abstract: We sampled Pinus massoniana and Cunninghamia lanceolata in both plantation and natural forests in central and western Fujian Province, China. Using tree-ring width, tree-ring width index, and basal area increment, we reconstructed the annual growth of 109 conifer individuals from four sites for the 20-year period from 1993 to 2012. We then calculated resistance, recovery, and resilience indices of those trees in response to two consecutive extreme droughts (2003-2004 and 2011) and analyzed the differences in resistance and resilience between plantations and natural fore-sts. The results showed that there were temporal differences in moisture requirements between P. massoniana and C. lanceolata, which accounted for their inconsistent responses to drought in 2003-2004. For both species, drought induced a marked growth reduction, without any clear lag effect. The growth responses during and following the 2003-2004 drought were significantly stronger than that for the 2011 drought. Those results indicated that P. massoniana was more resilient to drought stress than C. lanceolata, and the natural forests were more sensitive than plantations, but with stronger capacity to recover. C. lanceolata plantations were more susceptible to frequent extreme drought events. To mitigate the vulnerability of plantation trees to more frequent droughts in the future, we suggested select trees from genetic provenances with strong drought resistance.

Key words: tree ring, ecological resilience, drought

曹新光, 胡红兵, 李颖俊, 董志鹏, 卢晓蓉, 白毛伟, 郑壮鹏, 方克艳. 亚热带人工和天然马尾松、杉木林生长对干旱的生态弹性差异[J]. 应用生态学报, 2021, 32(10): 3531-3538.

CAO Xin-guang, HU Hong-bing, LI Ying-jun, DONG Zhi-peng, LU Xiao-rong, BAI Mao-wei, ZHENG Zhuang-peng, FANG Ke-yan. Differences in the ecological resilience of planted and natural Pinus massoniana and Cunninghamia lanceolata forests in response to drought in subtropical China[J]. Chinese Journal of Applied Ecology, 2021, 32(10): 3531-3538.

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亚热带人工和天然马尾松、杉木林生长对干旱的生态弹性差异

Differences in the ecological resilience of planted and natural Pinus massoniana and Cunninghamia lanceolata forests in response to drought in subtropical China

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