期刊论文

Xie, Z.-Q.

中文

植物生态学报

1005-264X

2017

41

1

43-52

10.17521/cjpe.2016.0174

XDA05050302:中国科学院战略性先导科技专项 Y5220B1001:国家科技基础性工作专项

本校为其他机构

灌丛生态系统作为一个巨大的潜在碳汇,在全球碳平衡和气候调节中发挥着重要的作用。杜鹃(Rhododendron simsii)灌丛是我国亚热带山地最为常见的灌丛类型。该文采用群落调查和数学模拟方法,研究了亚热带山地杜鹃灌丛的生物量和碳密度。结果表明: 1)灌木各器官最佳生物量估测模型的函数类型为幂函数和线性函数,自变量为D和D2H(D为基径, H为株高),所有模型均达到极显著水平;生长方程对茎生物量的拟合效果优于其对叶和当年枝生物量的拟合效果。2)灌木层平均生物量为20.78 Mg·hm~(-2),其中优势树种杜鹃和白檀(Symplocos paniculata)占93.63%;灌木层各器官生物量排序为茎>根>叶>当年枝,根冠比为0.32,...

Aims: As an important potential carbon sink, shrubland ecosystem plays a vital role in global carbon balance and climate regulation. Our objectives were to derive appropriate regression models for shrub biomass estimation, and to reveal the biomass allocation pattern and carbon density in Rhododendron simsii shrubland. Methods: We conducted investigations in 27 plots, and developed biomass regression models for shrub species to estimate shrub biomass. The biomass of herb and litterfall were obtained through harvesting. Plant samples were collec...