globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2017.08.022
Scopus记录号: 2-s2.0-85027838202
论文题名:
Calcium in decomposing foliar litter – A synthesis for boreal and temperate coniferous forests
作者: Berg B.; Johansson M.-B.; Liu C.; Faituri M.; Sanborn P.; Vesterdal L.; Ni X.; Hansen K.; Ukonmaanaho L.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2017
卷: 403
起始页码: 137
结束页码: 144
语种: 英语
英文关键词: Accumulated mass loss ; Ca dynamics ; Ca release ; Calcium ; Decomposition ; Litter
Scopus关键词: Decomposition ; Dynamics ; Forestry ; Plants (botany) ; Accumulated mass ; Coniferous forests ; Initial concentration ; Limited data sets ; Linear relationships ; Litter ; Maximum concentrations ; Mean annual precipitation ; Calcium ; Betula ; Picea ; Picea abies ; Pinus contorta ; Pinus sylvestris
英文摘要: We have synthesized available data for calcium (Ca) dynamics in decomposing foliar litter of mainly pine (Pinus), spruce (Picea), and birch (Betula) species to determine patterns of Ca concentration with climate in newly shed litter and its dynamics in decomposing litter as well as a possible role for Ca as regards limit values. Initial Ca concentration was negatively related to mean annual precipitation (MAP) with different relationships among genera. A limited data set showed a positive relationship across species (p < 0.05) to extractable Ca in soil. In paired stands, litter of both Norway spruce (Picea abies) and lodgepole pine (Pinus contorta) had higher Ca concentrations than Scots pine (Pinus silvestris), Norway spruce litter even twice as high. Relationships between initial concentrations of Ca and those of other nutrients appeared to be dominated by the positive ones to potassium (K) and magnesium (Mg) and specifically for deciduous litter there was a negative relationship to nitrogen (N). In decomposing litter, Ca concentration followed a negative quadratic (Ca = a + t − t2) function and had a maximum, which was variable. The Ca maximum concentration during decomposition was positively related to initial Ca concentration both within and among species. Separate linear relationships based on species were combined into one, in common for all investigated species and genera (R2 = 0.914, n = 63, p < 0.001). Limit values for decomposition were positively related to maximum Ca concentration at p < 0.05 with separate functions for pine and spruce litter. Calcium net release started directly after the incubation and was linear to accumulated mass loss of litter, giving a slope coefficient for each study. The net release rates were linear to initial Ca concentration both within and across species/genera. All studies combined gave a negative linear relationship (R2 = 0.894, n = 67, p < 0.001). © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64122
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Forest Ecology, P.O. Box 27, University of Helsinki, Helsinki, Finland; University of Gävle, Gävle, Sweden; School of Agriculture and Biology, Shanghai Jiao Tong University, Dongchuan Rd. 800, Shanghai, China; Shanghai Urban Forest Research Station, State Forestry Administration China, Dongchuan Rd. 800, Shanghai, China; Department of Soils and Water, Omar AlMukhtar University, P.O. Box 919, Elbeida, Libyan Arab Jamahiriya; Ecosystem Science and Management Program, University of Northern British Columbia, Prince George, BC, Canada; Department of Geosciences and Natural Resource Management, University of Copenhagen, Frederiksberg C, Denmark; Long-term Research Station of Alpine Forest Ecosystems, Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, Chengdu, China; IVL Swedish Environmental Research Institute, Stockholm, Sweden; Natural Resources Institute Finland, PL 2, Helsinki, Finland

Recommended Citation:
Berg B.,Johansson M.-B.,Liu C.,et al. Calcium in decomposing foliar litter – A synthesis for boreal and temperate coniferous forests[J]. Forest Ecology and Management,2017-01-01,403
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