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温远光,严宇航,陶彦良,蔡道雄,周晓果,朱宏光,贾宏炎,明安刚,赵明威,陆艳仙,严理,李武志.不同林地清理和培肥措施对桉树人工林植物多样性的影响[J].广西科学,2018,25(2):117-127. [点击复制]
- WEN Yuanguang,YAN Yuhuang,TAO Yanliang,CAI Daoxiong,ZHOU Xiaoguo,ZHU Hongguang,JIA Hongyan,MING Angang,ZHAO Mingwei,LU Yanxian,YAN Li,LI Wuzhi.Effects of Different Ground Clearance and Fertilizing Treatments on Plant Diversity of Eucalyptus Plantations in Subtropical China[J].Guangxi Sciences,2018,25(2):117-127. [点击复制]
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| 不同林地清理和培肥措施对桉树人工林植物多样性的影响 |
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温远光1,2,3, 严宇航1, 陶彦良1, 蔡道雄3,4, 周晓果1, 朱宏光1,2,3, 贾宏炎3,4, 明安刚3,4, 赵明威1, 陆艳仙1, 严理1, 李武志4
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| (1.广西大学林学院, 广西森林生态与保育重点实验室培育基地, 广西南宁 530004;2.广西大学林学院, 广西高校林业科学与工程重点实验室, 广西南宁 530004;3.广西友谊关森林生态系统定位观测研究站, 广西凭祥 532600;4.中国林业科学研究院热带林业实验中心, 广西凭祥 532600) |
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| 摘要: |
| [目的]探讨不同林地清理方式下不同培肥措施对植物多样性的作用规律,为桉树人工林的可持续经营提供理论依据。[方法]基于两种不同林地清理(火烧清理和人工清理)和3种不同培肥措施(加炭C、加氮N和套种绿肥)处理试验,比较研究不同林地清理和培肥措施的独立和交互作用对桉树人工林下植物多样性的影响。[结果]火烧清理和人工清理4年后,火烧清理林地的物种丰富度显著低于人工清理林地(P<0.001);两种清理方式下加C、加N和套种绿肥均明显改变植物群落的组成和结构,但优势种保持不变,均为蔓生莠竹、弓果黍、小花露籽草和五节芒(套种绿肥中的小花露籽草除外),显著降低植物多样性指数(包括Shannon-Wiener指数、Simpson指数和Pielou均匀度指数);两种清理方式各处理林下植物功能群谱完全相同,均表现为禾草植物 > 木本植物 > 蕨类植物 > 藤本植物 > 杂草植物 > 入侵植物;两因素方差分析表明,火烧清理和人工清理条件下,加C、加N、套种绿肥处理均极显著影响林下植物多样性指数,林地清理方式与不同处理的交互作用也对林下植物多样性指数产生极显著的影响。[结论]火烧和人工清理林地及加C、加N、套种绿肥等培肥措施对林下植物多样性存在显著影响。从维护生物多样性的视角出发,在桉树人工林的经营中应尽量减少加C、加N和套种绿肥等培肥措施的应用。 |
| 关键词: 桉树人工林 林地清理 加炭 加氮 植物多样性 植物功能群谱 |
| DOI：10.13656/j.cnki.gxkx.20180504.001 |
| 投稿时间：2018-01-29 |
| 基金项目:国家自然科学基金项目(31460121),广西高等学校重大科研项目(201201ZD001),广西森林生态与保育重点实验室培育基地开放课题(QZKFKT2017-01),广西林业厅科研项目(桂林科字[2009]第八号)和广西研究生教育创新计划项目(YCBZ2015016)资助 |
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| Effects of Different Ground Clearance and Fertilizing Treatments on Plant Diversity of Eucalyptus Plantations in Subtropical China |
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WEN Yuanguang1,2,3, YAN Yuhuang1, TAO Yanliang1, CAI Daoxiong3,4, ZHOU Xiaoguo1, ZHU Hongguang1,2,3, JIA Hongyan3,4, MING Angang3,4, ZHAO Mingwei1, LU Yanxian1, YAN Li1, LI Wuzhi4
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| (1.Guangxi Key Laboratory of Forest Ecology and Conservation, Forestry College, Guangxi University, Nanning, Guangxi, 530004, China;2.Guangxi Colleges and Universities Key Laboratory of Forestry Science and Engineering, Forestry College, Guangxi University, Nanning, Guangxi, 530004, China;3.Guangxi Youyiguang Forest Ecosystem Research Station, Pingxiang, Guangxi, 532600, China;4.Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang, Guangxi, 532600, China) |
| Abstract: |
| [Objective] To explore the effects of different fertilization measures on plant diversity under different ground clearance methods, and to provide theoretical basis for sustainable management of Eucalyptus plantations.[Methods] Based on two different ground clearance methods (fire and manual ground clearance) and three different fertilization measures (C addition, N addition and green manure plant interplantation), tests were conducted to compare and study the independent and interactive effects of different fertilization measures on plant diversity of Eucalyptus plantations.[Results] After 4 years of fire and manual ground clearance, the species richness in plantations with fire ground clearance method was significantly lower than that in plantations with manual ground clearance method (P < 0.001).C addition, N addition and manure plant interplantation significantly changed the composition and structure of the plant community under two types of ground clearance methods and significantly reduced the plant diversity index (including the Shannon-Wiener index, Simpson index and Pielou's evenness index).While the dominant plants remained unchanged, all of them were Microstegium vagans, Cyrtococcum patens, Ottochloa nodosa and Miscanthus floridulus, except for Ottochloa nodosa in manure plant interplantation treatments.The plant functional groups spectrum in different ground clearance and treatments were identical with the trend of graminoids > woody > ferns > vines > herbaceous > invasive functional groups.The result of two-way ANOVAs revealed that treatments and the interaction between ground clearance and different treatments significantly influenced understory diversity index.[Conclusion] Fire ground clearance, manual ground clearance, C addition, N addition and manure plant interplantation had significant influence on understory diversity index.In order to maintain biodiversity, the application of fertilization measures such as adding C, adding N, and interplanting green manure should be minimized in the management of Eucalyptus plantations. |
| Key words: Eucalyptus plantations ground clearance C addition N addition plant diversity plant functional group spectrum |
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