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秦佳双,李玉凤,马姜明,蓝创造,李海星,唐生森,李明金.广西不同气候条件下马尾松人工林生物量模型构建及分配格局[J].广西科学,2020,27(2):165-174. [点击复制]
- QIN Jiashuang,LI Yufeng,MA Jiangming,LAN Chuangzao,LI Haixing,TANG Shengsen,LI Mingjin.Biomass Model Construction and Distribution Pattern of Pinus massoniana Plantations under Different Climatic Conditions in Guangxi[J].Guangxi Sciences,2020,27(2):165-174. [点击复制]
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| 广西不同气候条件下马尾松人工林生物量模型构建及分配格局 |
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秦佳双1,2, 李玉凤1,3, 马姜明1,3, 蓝创造4, 李海星5, 唐生森6, 李明金7
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| (1.广西师范大学可持续发展创新研究院, 广西桂林 541006;2.广西壮族自治区中国科学院广西植物研究所, 广西桂林 541006;3.珍稀濒危动植物生态与环境保护教育部重点实验室, 广西桂林 541006;4.环江毛南族自治县华山林场, 广西河池 547105;5.广西壮族自治区国有派阳山林场, 广西崇左 532200;6.广西林业科学研究院, 广西南宁 530002;7.横县镇龙林场, 广西南宁 530327) |
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| 摘要: |
| 为科学地理解马尾松Pinus massoniana人工林地上生物量的分配格局及随气候带的变化，以广西中亚热带、南亚热带和北热带不同气候条件下马尾松人工林幼龄林、中龄林和过熟林为研究对象，构建生物量模型，并基于所得的模型比较分析不同气候条件下马尾松人工林生物量分配特征。结果表明：（1）灌木层立木生物量模型中，干和整株地上部分生物量的拟合效果较好，且模型Ⅱ：W=a×Db×Hc的各项评价指标最好；（2）马尾松中龄林的群落及乔木层各部分生物量的积累均表现为南亚热带 > 北热带 > 中亚热带，灌木层的叶和枝生物量积累均表现为北热带 > 南亚热带 > 中亚热带，干和地上生物量均表现为南亚热带 > 中亚热带 > 北热带；幼龄林和过熟林（除叶生物量外）群落各部分生物量积累分别均为南亚热带最少；（3）中龄林叶生物量表现为南亚热带 > 北热带 > 中亚热带，枝、干和地上生物量均表现为北热带 > 南亚热带 > 中亚热带，马尾松各部分生物量（除叶生物量外）在群落中占比以及乔木层马尾松各部分生物量占比均表现为北热带 > 中亚热带 > 南亚热带。幼龄林和过熟林生物量积累分别均为南亚热带最少，马尾松各部分占比均为南亚热带最低。气候条件变化对马尾松不同阶段各部分均有着明显的影响，不同气候条件下马尾松生物量有明显不同。 |
| 关键词: 马尾松 人工林 生物量 分配格局 估测模型 气候条件 |
| DOI：10.13656/j.cnki.gxkx.20200422.001 |
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| 基金项目:广西创新驱动发展专项（桂科AA17204087-7），桂林市科学研究与技术开发计划项目（20190205，20180107-3），广西优良用材林资源培育重点实验室开放课题项目（2019-B-04-01）和广西研究生教育创新计划项目（XYCSZ2019081）资助。 |
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| Biomass Model Construction and Distribution Pattern of Pinus massoniana Plantations under Different Climatic Conditions in Guangxi |
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QIN Jiashuang1,2, LI Yufeng1,3, MA Jiangming1,3, LAN Chuangzao4, LI Haixing5, TANG Shengsen6, LI Mingjin7
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| (1.Innovation Institute of Sustainable Development, Guangxi Normal University, Guilin, Guangxi, 541006, China;2.Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi, 541006, China;3.Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin, Guangxi, 541006, China;4.Huashan Forest Farm of Huanjiang Maonan Autonomous County, Hechi, Guangxi, 547105, China;5.Guangxi Zhuang Autonomous Region State-owned Paiyang Mountain Forest Farm, Chongzuo, Guangxi, 532200, China;6.Guangxi Academy of Forestry Sciences, Nanning, Guangxi, 530002, China;7.Zhenlong Forest Farm of Heng County, Nanning, Guangxi, 530327, China) |
| Abstract: |
| In order to scientifically understand the distribution pattern of above-ground biomass of Pinus massoniana plantation and its changes with climatic zone,the young,middle-aged and over-mature forests of P.massoniana plantations under different climatic conditions in the mid-subtropical,southern subtropical and northern tropical regions of Guangxi were taken as the research objects,and a biomass model was built.Based on the obtained model,the biomass allocation characteristics of P.massoniana plantations under different climatic conditions were compared and analyzed.The results showed that:(1) In the shrub layer standing biomass models,the fitting effect of the above-ground biomass of the trunk and whole plants was better,and the model Ⅱ:W=a×Db×Hc has the best evaluation index.(2) The community of middle-aged P.massoniana forest and the accumulation of biomass in various parts of the tree layer was shown as south subtropical > north tropical > middle subtropical.The accumulation of leaf and branch biomass in the shrub layer was shown as north tropical > southern subtropical > middle subtropical.The trunk and above-ground biomass are expressed as south subtropical > mid-subtropical > north tropical.The accumulation of biomass in each part of the community in young forests and over-mature forests (except leaf biomass) was the smallest in the southern subtropics.(3) The leaf biomass of P.massoniana of the middle-aged forest was shown as south subtropical > north tropical > mid-subtropical,and the biomass of branch,trunk and above-ground was all shown as north tropical > south subtropical > mid-subtropical.The biomass of all parts of P.massoniana (except leaf biomass) in the community and the biomass of each part of tree layer were expressed as north tropical > mid-subtropical > south subtropical.The biomass accumulation of young forests and over-mature forests was the least in southern subtropics,respectively,and the proportion of each part of P.massoniana was the lowest in southern subtropics.The change of climatic conditions had significant influence on different parts of P.massoniana at different stages,and the biomass of P.massoniana was obviously different under different climatic conditions. |
| Key words: Pinus massoniana plantations biomass distribution pattern estimation models climatic conditions |
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