• 论文及研究报告 •

### 巴郎山川滇高山栎灌丛地上生物量及其对海拔梯度的响应

1. 1.北京林业大学资源与环境学院,北京100083；2.四川省林业科学研究院成都610081；3.中国林业科学研究院森林生态环境与保护研究所,北京100091
• 收稿日期:2004-05-31 修回日期:1900-01-01 出版日期:2006-02-25 发布日期:2006-02-25

### Aboveground Biomass of Quercus aquifolioides Shrub Community and Its Responses to Altitudinal Gradients in Balangshan Mountain, Sichuan Province

Liu Xingliang1,2,Liu Shirong3,Su Yiming2,Cai Xiaohu2,Ma Qinyan1

1. 1. Environment and Resources College of Beijing Forestry University Beijing 100083; 2. Sichuan Academy of Forestry Chengdu 610081; 3.Institute of Forest Ecology, Environment and Protection, CAF Beijing 100091
• Received:2004-05-31 Revised:1900-01-01 Online:2006-02-25 Published:2006-02-25

Abstract:

Using the methods of field plot investigation and sample tree plot harvesting, biomass in 18 plots of Quercus aquifolioides shrub communities, distributing along altitudes from 2 720 m to 3 120 m, studied at Balangshan Mountain in Wolong Nature Reserve. The results showed: 1) The preferred model, which estimate the organs' biomass of individual with diameter (D) or height (H), was an exponential model or a power function model, and the latter was the best with relative coefficients ranging from 0.941 to 0.998; the preferred model, which estimate the organs' biomass of individual with D2H, was a linear model or an exponential model, and the former was the best with relative coefficients ranging from 0.982 to 0.996; 2) The average total biomass of Q. aquifolioides shrub community was 25.22 t·hm-2, the biomasses in different layers were Q. aquifolioides layer > ground litter > the associated shrubs layer > moss> herbage, and their biomasses accounted for 72.20%,23.71%,1.80%,1.66% and 0.63% of the total biomass respectively; 3) The total average biomass of Q. aquifolioides population was 18.21 t·hm-2, the biomasses in different organs were stem > branch > leaf > bark, and their biomasses accounted for 43.28%,26.88%,19.82% and 10.02% of the total population biomass respectively. For the aboveground biomass of the populations distribute from 2 720 m to 2 920 m, stem∶branch∶leaf∶bark was 4∶3∶2∶1; and for the aboveground biomass of the populations distribute from 3 020 m to 3 120 m, stem∶branch∶leaf∶bole bark was 4∶2∶2∶1; 4) There was a decline trend in base diameter, height, and biomass of Q. aquifolioides with the increase of altitude. Aboveground biomass of individual was spindle distribution for the Q. aquifolioides from 2 720 m to 2 920 m, and it distributed mainly from 2.0 m to 3.0 m of the stem, accounted for 60%～70%; for the Q. aquifolioides from 3 020 m to 3 120 m or in drought habitats in lower altitude area, aboveground biomass of individual was pyramid distribution, it increased with the height of the tree, it distributed mainly from 0.0 m to 1.0 m of the stem, accounted for 62%～83%, and the biomass from 0 m to 2.0 m of the stem accounted for 94%～99%.