Environmental controls on ground cover species composition and productivity in a boreal black spruce forest
Environmental controls on ground cover species composition and productivity in a boreal black spruce forest
复制标题
DOI：
10.1007/s004420100719
复制
发表时间：
2001-10-01
期刊：
影响因子：
2.7
通讯作者：
Nordheim, EV
中科院分区：
文献类型：
--
作者：
Bisbee, KE;Gower, ST;Nordheim, EV
北方黑云杉森林通常有浓密的苔藓植物覆盖。北方黑云杉林中两种主要苔藓类群羽毛藓和泥炭藓具有不同的生理生态特征，对黑云杉林的生物地球化学循环有不同的影响。本研究的目的是研究萨斯喀彻温省中部北部黑云杉林地表覆盖组成和毛藓和泥炭的净初级生产量的环境控制。Sphagnum地覆盖比例与冠层光合有效辐射（PAR）透过率呈显著正相关（r(2)=0.48， P=0.03），而在Sphagnum地覆盖比例与冠层PAR透过率呈显著负相关（r(2)=0.87， P=0.03）
Boreal black spruce forests typically have a dense ground cover of bryophytes. The two main bryophyte groups in boreal black spruce forests, feathermoss and Sphagnum, have ecophysiological characteristics that influence the biogeochemical cycles of black spruce forests differently. The objective of this study was to examine the environmental controls of ground cover composition and net primary production (NPP) of feathermoss and Sphagnum in a boreal black spruce forest in central Saskatchewan. The fraction of Sphagnum ground cover was positively correlated to canopy photosynthetically active radiation (PAR) transmittance (r(2)=0.48, P=0.03), but the fraction of feathermoss ground cover was negatively correlated to canopy PAR transmittance in plots where Sphagnum was present (r(2)=0.87, P