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不同林分密度杨树人工林的固碳释氧和积累营养物质研究
引用本文:王晓荣,胡兴宜,唐万鹏,崔鸿侠,漆荣,黄生员,石凤,荣新军.不同林分密度杨树人工林的固碳释氧和积累营养物质研究[J].湖北林业科技,2020,49(3):1-4.
作者姓名:王晓荣  胡兴宜  唐万鹏  崔鸿侠  漆荣  黄生员  石凤  荣新军
作者单位:湖北省林业科学研究院 武汉430075,湖北省林业科学研究院 武汉430075,湖北省林业科学研究院 武汉430075,湖北省林业科学研究院 武汉430075,湖北九森林业股份有限公司 武汉430070,湖北九森林业股份有限公司 武汉430070,黄冈市黄州区李家洲林场 黄冈 438000,湖北省林科院石首杨树研究所 荆州 434400
基金项目:湖北省林业科技支撑计划重点项目;湖北省速生丰产林工程技术研究中心资助
摘    要:以江汉平原石首市6种不同密度(2500,1666,833,625,416,208株·hm-2)6 a生的杨树人工林为研究对象,对其林木碳储量、固碳释氧和积累营养物质等生态功能进行研究。研究结果表明:不同密度6 a生杨树人工林林木碳储量变化范围为15.72~73.88 t·hm-2,林木固碳量为2.33~10.94 t·hm-2·a-1,释氧量为6.24~29.30 t·hm-2·a-1,积累营养物质量为0.06~0.27 t·hm-2·a-1。随着林分密度的增加,6 a生的杨树人工林的林木碳储量、固碳释氧和积累营养物质均随之增加。对于生长早期的杨树林,较高的杨树林密度有利于林分尽快郁闭,林木生产力和生物量也较高,有利于其生态功能更好地发挥。

关 键 词:杨树人工林  林分密度  固碳释氧  积累营养物质  江汉平原

Study on Carbon Fixation,Oxygen Release and Nutrient Accumulation in Poplar Plantation With Different Stand Densities
Wang Xiaorong,Hu Xingyi,Tang Wangpeng,Cui Hongxia,Qi Rong,Huang Shengyuan,Shi Feng,Rong Xinjun.Study on Carbon Fixation,Oxygen Release and Nutrient Accumulation in Poplar Plantation With Different Stand Densities[J].Hubei Forestry Science and Technology,2020,49(3):1-4.
Authors:Wang Xiaorong  Hu Xingyi  Tang Wangpeng  Cui Hongxia  Qi Rong  Huang Shengyuan  Shi Feng  Rong Xinjun
Institution:(Hubei Academy of Forestry,Wuhan 430075;Hubei Jiusen Forestry co.ltd,Wuhan 430070;Lijiazhou Forestry Farm of Huangzhou Country, Huanggang 438000;Shishou Research Institule of Poplar,Hubei Academy of Forestry, Jingzhou 434400)
Abstract:A study of ecological function including stand carbon storage,carbon fixation and oxygen release,nutrient accumulation were carried out in 6-year-old poplar plantation with six densities(2500 plants/hm2,1666 plants/hm2,833 plants/hm2,625 plants/hm2,416 plants/hm2,208plants/hm2)in Jianghan Plain of Hubei Province.The results showed that the variation range of carbon storage in poplar plantations with different densities was 15.72~73.88 t·hm-2,carbon sequestration of trees was 2.33~10.94 t·hm-2·a-1,oxygen release was 6.24~29.30 t·hm-2·a-1,and accumulated nutrient mass was 0.06~0.27 t·hm-2·a-1.With the increase of stand density,the stand carbon storage,carbon fixation and oxygen release,nutrient accumulation of 6-year-old poplar plantation increased.For the poplar plantation in the early growth stage,the higher density of poplar forest is conducive to forest canopy closing as soon as possible,the higher tree productivity and biomass,which may lead to its higher ecological function.
Keywords:poplar plantations  stand density  carbon fixation and oxygen release  nutrient accumulation  Jianghan plain
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