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温远光,张祖峰,周晓果,朱宏光,王磊,蔡道雄,贾宏炎,明安刚,卢立华.珍贵乡土树种与桉树混交对生态系统生物量和碳储量的影响[J].广西科学,2020,27(2):111-119. [点击复制]
- WEN Yuanguang,ZHANG Zufeng,ZHOU Xiaoguo,ZHU Hongguang,WANG Lei,CAI Daoxiong,JIA Hongyan,MING Angang,LU Lihua.Effects of Mixing Precious Indigenous Tree Species and Eucalyptus on Ecosystem Biomass and Carbon Stocks[J].Guangxi Sciences,2020,27(2):111-119. [点击复制]
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| 珍贵乡土树种与桉树混交对生态系统生物量和碳储量的影响 |
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温远光1,2,3, 张祖峰1, 周晓果1,3, 朱宏光1,2, 王磊1, 蔡道雄2,4, 贾宏炎2,4, 明安刚2,4, 卢立华2,4
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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, 广西南宁 530004;2.广西友谊关森林生态系统定位观测研究站, 广西凭祥 532600;3.广西科学院生态产业研究院, 广西南宁 530007;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: |
| 阐明珍贵乡土树种与桉树混交对生态系统生物量和碳储量的影响是精准评估人工林碳源/汇性质和提升人工林质量的重要基础。本研究以6年生的桉树纯林（EP）、桉树×红锥混交林（MEC）、桉树×望天树混交林（MEP）为对象，探讨珍贵乡土树种与桉树混交对生态系统生物量和碳储量的影响及作用机制。结果表明，EP、MEC、MEP的生态系统生物量和碳储量分别是135.78，154.75，155.24 t/hm2和197.89，225.45，227.37 t/hm2。方差分析表明，珍贵乡土树种红锥和望天树与桉树混交显著提高了人工林生态系统的生物量和碳储量，混交林生态系统生物量比纯林提高13.97%—14.33%，而碳储量比纯林提高13.93%—14.89%。说明红锥和望天树与桉树混交属于促进（Facilitation）或竞争减弱（Competitive reduction）的种间相互作用关系，种间竞争小于种内竞争，资源的有效性和利用率提高，因而促进林分生态系统生物量和碳储量的提高。红锥和望天树与桉树混交可以实现桉树木材生产与其他生态服务的平衡，是一种较好的经营模式。 |
| 关键词: 珍贵乡土树种 桉树 混交林 生物量 碳储量 |
| DOI：10.13656/j.cnki.gxkx.20200421.005 |
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| 基金项目:国家自然科学基金项目（31860171，31460121），广西重点研发计划项目（2018AB40007），广西自然科学基金项目（2017GXNSFAA198114），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开放课题（QZKFKT2017-01）和广西林业厅科研项目（桂林科字[2009]第八号）资助。 |
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| Effects of Mixing Precious Indigenous Tree Species and Eucalyptus on Ecosystem Biomass and Carbon Stocks |
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WEN Yuanguang1,2,3, ZHANG Zufeng1, ZHOU Xiaoguo1,3, ZHU Hongguang1,2, WANG Lei1, CAI Daoxiong2,4, JIA Hongyan2,4, MING Angang2,4, LU Lihua2,4
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| (1.Guangxi Key Laboratory of Forest Ecology and Conservation, Forestry College, Guangxi University, Nanning, Guangxi, 530004, China;2.Guangxi Youyiguang Forest Ecosystem Research Station, Pingxiang, Guangxi, 532600, China;3.Institute of Ecological Industry, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China;4.Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang, Guangxi, 532600, China) |
| Abstract: |
| To elucidate the effects of precious indigenous tree species mixed with Eucalyptus on ecosystem biomass and carbon stocks is an important foundation for accurately evaluating the property of carbon source/sink and improving the quality of plantation. In this study,6-year-old pure Eucalyptus plantations (EP),mixed Eucalyptus and Castanopsis hystrix plantations (MEC),and mixed Eucalyptus and Parashorea chinensis plantations (MEP) were selected as the subjects to investigate the effects and mechanisms of mixture of precious tree species with Eucalyptus on ecosystem biomass and carbon stocks. The results showed that the ecosystem biomass and carbon stocks of EP,MEC and MEP were 135.78,154.75,155.24 t/hm2 and 197.89,225.45,227.37 t/hm2,respectively.Variance analysis showed that mixture of precious indigenous tree species with Eucalyptus could significantly improve the biomass and carbon stocks of the artificial forest ecosystem.The biomass of mixed forest ecosystems increased by 13.97%-14.33% over pure forests,while the carbon stocks increased by 13.93%-14.89% over pure forests.These results suggested the mixture of C.hystrix and P.chinensis with Eucalyptus were inter-species interaction relationship of facilitation or competitive reduction.In the mixture plantations,inter-species competition was less than intra-species competition,and the availability and utilization of resources were improved,thus promoting the improvement of biomass and carbon stocks of stand ecosystem.Our results suggest that mixing C.hystrix or P.chinensis with Eucalyptus should be a better management model for the balance between eucalypts wood production and other ecological services. |
| Key words: precious indigenous tree species Eucalyptus mixed plantations biomass carbon stock |
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