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| 巴朗山川滇高山栎群落水平结构的海拔梯度特征 | |
| 引用本文： | 刘兴良,刘向东,何飞,周世强,杨启东,黄光忠,薛樵.巴朗山川滇高山栎群落水平结构的海拔梯度特征[J].四川林业科技,2009,30(1). |
| 作者姓名： | 刘兴良 刘向东 何飞 周世强 杨启东 黄光忠 薛樵 |
| 作者单位： | 1. 四川省林业科学研究院,四川,成都,610081 2. 阿坝州林业局,四川,马尔康,624000 3. 中国大熊猫研究中心,四川,卧龙,623006 4. 茂县林业局,四川,茂县,623200 5. 理县林业局,四川,理县,623200 |
| 基金项目： | 国家科技支撑计划，国家林业局重点项目，国家林业局四川森林生态与资源环境重点实验室开放课题，森林和湿地生态回访与保育四川省重点实验室开放课题 |
| 摘 要： | 采用标准地法对卧龙自然保护区4个海拔梯度川滇高山栎群落水平结构进行了研究,结果表明:(1)在各个海拔梯度上物种以川滇高山栎为主,其相对密度分别为61.40、65.67、77.21和62.27;随海拔升高伴生木本植物种类逐渐减少,从11种减少到3种.(2)有随海拔升高,川滇高山栎群落物种相对频度大于2.0以上的物种数量具有先升高后降低的趋势,川滇高山栎是各个梯度出现频度最大的物种.(3)川滇高山栎群落物种重要值大于5.0以上的物种数量具有随海拔升高先升高后降低的趋势,川滇高山栎在从低到高的4个海拔梯度上重要值分别为68.47、80.37、119.93和84.01.(4)林分平均树高和林分平均地径具有随海拔升高而降低的趋势,海拔每升高100 m树高和基径分别平均降低0.18 m和0.22 cm.(5)按株频度计算,在巴朗山阳坡各个海拔梯度的川滇高山栎种群多为聚集分布;而丛频度计算,在高海拔和低海拔地带川滇高山栎种群格局呈聚集分布,在中等海拔区域川滇高山栎种群格局呈随机分布或均匀分布. |
| 关 键 词： | 海拔梯度 群落 水平结构 川滇高山栎 卧龙自然保护区 |
The Altitudinal Gradient Characteristics of Level Structure in the Quercus aquifolioides Community in the Balang Mountain in Wolong Nature Reserve,China |
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| LIU Xing-liang,LIU Xiang-dong,HE Fei,ZHOU Shi-qiang,YANG Qi-dong,HUANG Guang-zhong,XUE Qiao.The Altitudinal Gradient Characteristics of Level Structure in the Quercus aquifolioides Community in the Balang Mountain in Wolong Nature Reserve,China[J].Journal of Sichuan Forestry Science and Technology,2009,30(1). | |
| Authors: | LIU Xing-liang LIU Xiang-dong HE Fei ZHOU Shi-qiang YANG Qi-dong HUANG Guang-zhong XUE Qiao |
| Institution: | 1.Sichuan Academy of Forestry;Chengdu 610081;China;2.Forestry Bureau of Aba Prefecture;Maerkang 624000;3.Maoxian Bureau of Forestry;Maoxian County 623200;4.Lixian Bureau of Forestry;Lixian County 624000;5.Sichuanc Forest Inventory and Plan Institute;6.China Protection and Research Centre of Giant Panda;Wenchuan County 623006;China |
| Abstract: | Using the methods of field plot investigation,researches were directed towards the characteristics of level structure in Quercus aquifolioides communities,which were distributed along altitudes from 2 400 m to 3 600 m,and in the sunny slopes of the Balang Mountain in Wolong Nature Reserve.The results are summarized as follows:(1)The main species is Quercus aquifolioides in Quercus aquifolioides communities along altitudes from 2 400 m to 3 600 m,and the relative density of woody layer of Q.aquifolioides com... |
| Keywords: | Altitude gradient Q aquifolioides Community Level structure Wolong Nature Reserve |
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