生态学杂志2013，Vol.32Issue(2)：325-331,7.
长白山落叶松林下笃斯越桔群落土壤的主要矿质养分构成特征
Characteristics of soil mineral nutrient composition in Vaccinium uliginosum community under Larix olgensis forest in Changbai Mountains of Northeast China
摘要
Abstract
Taking the Vaccinium uliginosum community under Larix olgensis forest in Changbai Mountains as test object, an investigation was conducted on the contents of N, P, K, Ca, Mg and S and their composition characteristics in various soil layers. The root system of the V. uligi-nosum community was mainly distributed in the surface soil which was covered by moss and by the litters from Larix and Vaccinium, and few were in the mineral soil layer which was developed from pozzuolana. As compared with those in larch litter, the total N, P, and K contents in two moss taxa, Sphagnum and Plytrichum, were obviously higher, the total Ca content was slightly lower, whereas the total Mg and S contents were similar. These results suggested that dead mos-ses were the main sources of the N, P, and K for the V. uliginosum community. The litters of V. uliginosum, though their proportion in litter layer was small, still played an important role in nutrient supply, because of their higher contents of N, P, Ca, and S. From the top towards the bottom, the soil was divided into five layers, i. e. , live moss layer (L) , dead moss layer (F) , semi-decomposed layer (Al) , peat layer (Al) , and pozzolanic layer (C). The soil total N con-tent showed a decline pattern in the order of F>L>A1 >A2>C, the total P was in the order of L≈ F≈A1>A2>C, the total K was L≈F<A1<A2<C, the total S was L"F"A1>A2>C, the total Ca was L≈F>A1, and the total Mg was L<F<A1. In A2 and C layers, the contents of available mineral elements N, P, K, Ca, and Mg, except for S, in C layer were obviously lower than those in A2 layer. In addition, the higher pH value in C layer than in A2 layer restricted the root growth of V. uLiginosum.关键词
笃斯越桔/矿质养分/苔藓/落叶松/长白山Key words
Vaccinium uliginosum/mineral nutrient/moss/Larix olgensis/Changbai Mountains分类
生物科学引用本文复制引用
陈英敏,王贺新,李根柱,徐国辉,于冬梅,苗迎秋,牛丽华..长白山落叶松林下笃斯越桔群落土壤的主要矿质养分构成特征[J].生态学杂志,2013,32(2):325-331,7.基金项目
国家自然科学基金项目(30972348)资助. （30972348）
