Nutrient Release from Litter and Humus in Coniferous Forest Soils-a Mini Review

被引:332
作者
Berg, Bjorn [1 ]
机构
[1] Swedish Univ Agr Sci, Dept Ecol & Environm Res, Sect Forest Ecol, S-75007 Uppsala, Sweden
关键词
D O I
10.1080/02827588609382428
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
In northern coniferous forests nutrient release from litter occurs primarily in late stages of decomposition when mainly extensively lignified parts remain. An important regulating factor in these stages is the turnover rate of lignin and related compounds. Two factors which influence the decomposition rate of lignin are 1) nitrogen concentration which retards decomposition and 2) concentration of celluloses which increase the turnover rate. The amount and composition of humus which is formed may be dependent on the initial lignin concentration of the litter, which in its turn varies among species. These results from studies in northern coniferous forests are discussed in an ecosystem context.
引用
收藏
页码:359 / 369
页数:11
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