不同火烈度火烧迹地内油松叶功能性状的变化

doi:10.13287/j.1001-9332.202206.001

应用生态学报 ›› 2022, Vol. 33 ›› Issue (6): 1497-1504.doi: 10.13287/j.1001-9332.202206.001

不同火烈度火烧迹地内油松叶功能性状的变化

顾泽¹, 王博¹, 陈思帆¹, 王忆文¹, 索奥丽¹, 刘晓东^1,2, 陈锋^1*

¹北京林业大学森林资源生态系统过程北京市重点实验室, 北京 100083;
²森林草原火灾风险防控应急管理部重点实验室, 北京 102202

收稿日期:2021-11-22 接受日期:2022-03-07 出版日期:2022-06-15 发布日期:2022-12-15
通讯作者: *E-mail: chenfeng1208@bjfu.edu.cn
作者简介:顾泽, 男, 1996年生, 硕士研究生。主要从事林火生态学研究。E-mail: guze111@163.com
基金资助:
国家自然科学基金项目(31770696)资助。

Changes of leaf functional traits of Pinus tabuliformis in burned areas with different fire severities

GU Ze¹, WANG Bo¹, CHEN Si-fan¹, WANG Yi-wen¹, SUO Ao-li¹, LIU Xiao-dong^1,2, CHEN Feng^1*

¹Beijing Key Laboratory for Forest Resources and Ecosystem Processes, Beijing Forestry University, Beijing 100083, China;
²Emergency Management Department Key Laboratory of Forest and Grassland Fire Risk Prevention and Control, Beijing 102202, China

Received:2021-11-22 Accepted:2022-03-07 Online:2022-06-15 Published:2022-12-15

摘要/Abstract

摘要： 叶功能性状对林火的响应是林火生态领域的研究热点之一,研究火后油松叶功能性状变化能够揭示油松为适应火环境形成的生长策略,为促进油松火后恢复提供参考。以山西省沁源县火烧迹地内油松为研究对象,选择当年生叶片分析叶功能性状在不同火烈度(未过火、轻度火烧、中度火烧)火烧迹地间的变化规律,并研究不同火烧迹地内叶经济谱的变化特征。结果表明: 除氮磷比外,叶功能性状在不同火烈度的火烧迹地间存在显著差异,其中,叶面积的差异最为明显,是最敏感的性状。随火烧迹地内火烈度的增加,叶面积、叶厚度、叶干物质含量、叶氮含量和叶磷含量升高,比叶面积、叶有机碳含量降低。部分叶功能性状间存在显著的相关关系,但其相关性在不同火烈度的火烧迹地间存在差异。叶经济谱沿着“未过火-轻度火烧-中度火烧”的火烧迹地环境总体向“快速投资-收益型”的资源权衡策略移动,低烈度火烧迹地内油松的生长恢复会加快。

关键词: 森林火灾, 火烈度, 油松, 叶功能性状, 叶经济谱

Abstract: The response of leaf functional traits to forest fire is one of the research hotspots in the forest fire ecology. Studying post-fire changes in leaf functional traits of Pinus tabuliformis can reveal its growth strategies to adapt to fire environment and provide reference for the post-fire recovery. We analyzed the changes of leaf functional traits in burned areas with different fire severities (unburned, light burn and moderate burn) in Qinyuan County burned area of Shanxi Province, and studied the variation characteristics of leaf economic spectrum in different burned areas. The results showed that there were significant differences in burned areas with different fire severities for all leaf functional traits except N/P. Among them, the difference of leaf area was the most obvious, which was the most sensitive trait. With the increases of fire severity in burned areas, leaf area, leaf thickness, leaf dry matter content, leaf nitrogen content and leaf phosphorus content increased, while specific leaf area and leaf organic carbon content decreased. There were significant correlations among some leaf functional traits, with the correlations being distinct in burned areas with different fire severities. The leaf economic spectrum moved from ‘unburned-light burn-mode-rate burn’ to the resource trade-off strategy of ‘rapid investment-return type’ along the fire environment. The recovery of P. tabuliformis would be accelerated in burned area with low fire severity.

Key words: forest fire, fire severity, Pinus tabuliformis, leaf functional trait, leaf economic spectrum

顾泽, 王博, 陈思帆, 王忆文, 索奥丽, 刘晓东, 陈锋. 不同火烈度火烧迹地内油松叶功能性状的变化[J]. 应用生态学报, 2022, 33(6): 1497-1504.

GU Ze, WANG Bo, CHEN Si-fan, WANG Yi-wen, SUO Ao-li, LIU Xiao-dong, CHEN Feng. Changes of leaf functional traits of Pinus tabuliformis in burned areas with different fire severities[J]. Chinese Journal of Applied Ecology, 2022, 33(6): 1497-1504.

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不同火烈度火烧迹地内油松叶功能性状的变化

Changes of leaf functional traits of Pinus tabuliformis in burned areas with different fire severities

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