[1]高若允,杨柳生,罗清虎,等.洪涝灾害致损森林在自然恢复过程中的土壤种子库变化[J].山地学报,2022,(2):183-195.[doi:10.16089/j.cnki.1008-2786.000664]
 GAO Ruoyun,YANG Liusheng,LUO Qinghu,et al.Variation of Soil Seed Bank in Natural Restoration Processes of Different Types of Forests Disturbed by Floods[J].Mountain Research,2022,(2):183-195.[doi:10.16089/j.cnki.1008-2786.000664]
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洪涝灾害致损森林在自然恢复过程中的土壤种子库变化
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2022年第2期
页码:
183-195
栏目:
山地环境
出版日期:
2022-03-25

文章信息/Info

Title:
Variation of Soil Seed Bank in Natural Restoration Processes of Different Types of Forests Disturbed by Floods
文章编号:
1008-2786-(2022)2-183-13
作者:
高若允123杨柳生123罗清虎1王 雪1林勇明123*
1.福建农林大学 林学院,福州350002; 2.中国科学院、水利部成都山地灾害与环境研究所 山地灾害与地表过程重点实验室,成都610041; 3.福建省高校森林生态系统过程与经营重点实验室,福州350002
Author(s):
GAO Ruoyun123 YANG Liusheng123 LUO Qinghu1 WANG Xue1 LIN Yongming123*
1. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; 2. Key Laboratory of Mountain Hazards and Surface Processes, Institute of mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Conservancy, Chengdu 610041, China; 3. Key Laboratory for Forest Ecosystem Process and Management of Fujian Province, Fuzhou 350002, China
关键词:
洪涝灾害 土壤种子库 自然恢复 物种多样性 福建 南平
Keywords:
floods soil seed bank natural restoration species diversity Fujian Nanping
分类号:
S154.1
DOI:
10.16089/j.cnki.1008-2786.000664
文献标志码:
A
摘要:
受损生态系统自然恢复过程中的土壤种子库变化规律,可以用来预测植被演替的进度与方向,指导生态系统的恢复与重建。2010年6月福建省南平市特大暴雨诱发大面积滑坡、泥石流等自然灾害,当地林地受损严重。本文选取受损严重的米槠次生阔叶林、毛竹林、杉木林为研究对象,基于野外取样调查和室内试验,分析不同样地(受损样地、自然恢复样地、未受损样地)土壤种子库的萌发动态、数量特征和物种组成。结果显示:(1)土壤种子库的萌发过程包括快速增长、缓慢增长和稳定3个阶段。3种林型土壤种子库平均密度均随土层深度的增加而减少,存在明显的表聚现象。(2)种子库萌发物种以易于传播的菊科和禾本科植物为主,3种林型土壤种子库萌发物种均以多年生和一年生草本占据主要优势。(3)种子库物种多样性指数表现为杉木林优于次生阔叶林,毛竹林多样性指数最低,3种林型Margalef丰富度指数与杉木林Shannon-Wiener多样性指数由大到小依次为未受损样地、自然恢复样地、受损样地。(4)相关性分析表明3种林型土壤种子库密度主要受全氮、全磷、水解氮、有效磷和pH的影响,土壤种子库物种多样性均受到土壤理化性质的影响。以上结果表明洪涝诱发的灾害严重破坏土壤种子库,种子库自然恢复进程较慢且效果较差,后期应通过人工引种本土优势物种、提高土壤养分含量等措施促进灾区土壤种子库恢复,加快受损森林生态系统的恢复和重建进程。本研究可为洪涝灾害致损森林的生态恢复与重建提供理论参考。
Abstract:
Investigation on the changes in the processes of natural restoration from damaged ecosystems is a prerequisite for predicting the progress and direction of vegetation succession, and guiding the restoration and reconstruction of ecosystems. In June 2010, heavy floods in Nanping City, Fujian Province, China caused large scale landslides, debris flows and other natural disasters, resulting in serious damages in local forest lands. In this study, secondary broad-leaved forest, Chinese fir forest and bamboo forest were selected for investigation of soil seed bank changes after flood events. Field surveys and laboratory experiments were conducted and then it analyzed the germination dynamic, quantitative characteristics, species composition and diversity of soil seed banks in damaged plots, natural restoration plots, undamaged plots, separately. The results showed that:(1)The germination process of soil seed bank included three stages, which were defined as rapid, slow and stable processes. The average density of soil seed banks in all forest types decreased with the increase of soil depth, showing obvious surface accumulation.(2)The germinated species in the soil seed bank of three types of forests were mainly composed of easily spread Compositae and Gramineae, and dominated by perennial and annual herbs.(3)The species diversity index was higher in Chinese fir forest than one in secondary broad-leaved forest, whereas it was the lowest in the bamboo forest. The Margalef richness index of all types of forest and the Shannon-Wiener diversity index of Chinese fir forest were highest in undamaged plot, intermediate in natural restoration plot, and lowest in damaged plot.(4)Correlation analysis showed that soil seed bank densities of all types of forest were mainly affected by total nitrogen, total phosphorus, hydrolyzed nitrogen, available phosphorus and pH, and soil bank species diversity of all forest types was affected by soil physicochemical properties. The results indicated that the disasters induced by flood seriously damaged soil seed bank, which was hard to recover during the natural recovery process. Artificial introduction of local dominant species and soil nutrients improvement should be used to promote the recovery of the soil seed bank in damaged area. This study provides a theoretical reference for the restoration and reconstruction of damaged forest ecosystem.

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备注/Memo

备注/Memo:
收稿日期(Received date):2021-09-24; 改回日期(Accepted date): 2022-04-06
基金项目(Foundation item):国家自然科学基金(42071132); 中国科学院山地灾害与地表过程重点实验室开放研究基金(20190402); 福建农林大学杰出青年科研人才计划项目(xjq2017016)。[National Natural Science Foundation of China(42071132); Research Fund of Key Laboratory of Mountain Hazardsand Surface Processes, Chinese Academy of Sciences(20190402); Outstanding Young Scientific Research Project of Fujian Agriculture and Forestry University(xjq2017016)]
作者简介(Biography):高若允(1998-),女,河南商丘人,硕士研究生,主要研究方向:植物地理学。[GAO Ruoyun(1998-), female, born in Shangqiu, Henan province, M.Sc. candidate, research on phytogeography] E-mail: 18339160891@163.com
*通讯作者(Corresponding author):林勇明(1982-),男,福建福安人,博士,副教授,主要研究方向:区域资源优化、生态学。[LIN Yongming(1982-), male, born in Fu'an, Fujian province, Ph.D., associate professor, research on optimization of regional resources and ecology] E-mail: monkey1422@163.com
更新日期/Last Update: 2022-03-30