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。
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.
作者
王晓荣
胡兴宜
唐万鹏
崔鸿侠
漆荣
黄生员
石凤
荣新军
Wang Xiaorong;Hu Xingyi;Tang Wangpeng;Cui Hongxia;Qi Rong;Huang Shengyuan;Shi Feng;Rong Xinjun(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)
出处
《湖北林业科技》
2020年第3期1-4,共4页
Hubei Forestry Science and Technology
基金
湖北省林业科技支撑重点项目“湖北省长江经济带植被绿化提质技术研究”
湖北省速生丰产林工程技术研究中心资助。
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
poplar plantations
stand density
carbon fixation and oxygen release
nutrient accumulation
Jianghan plain
