DOI: 10.1007/s10533-016-0254-0
Scopus记录号: 2-s2.0-84989885264
论文题名: Biochar amendment and phosphorus fertilization altered forest soil microbial community and native soil organic matter molecular composition
作者: Mitchell P.J. ; Simpson A.J. ; Soong R. ; Schurman J.S. ; Thomas S.C. ; Simpson M.J.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 130, 期: 3 起始页码: 227
结束页码: 245
语种: 英语
英文关键词: Biomarkers
; Cutin
; Lignin
; Nuclear magnetic resonance
; Phospholipid fatty acids
; Soil fertility
; Suberin
Scopus关键词: biochar
; biomarker
; community structure
; fatty acid
; fertilizer application
; forest soil
; fungus
; lignin
; microbial activity
; microbial community
; nuclear magnetic resonance
; nutrient cycling
; phospholipid
; phosphorus
; soil amendment
; soil fertility
; soil microorganism
; soil nutrient
; soil organic matter
; temperate forest
; wax
; Canada
; Ontario [Canada]
; Bacteria (microorganisms)
英文摘要: Fertilizer application to nutrient-deficient forest soils may alleviate soil nutrient limitations, but long-term application may be cost-prohibitive and logistically challenging to apply to large areas. Biochar has been proposed as a soil amendment to increase soil carbon storage and may emulate fertilizer application by increasing soil nutrient availability. However, biochar may also stimulate microbial activity, potentially accelerating native soil organic matter (OM) decomposition and altering soil OM molecular composition. Here we compare changes in soil microbial activity and native OM composition in a P-limited temperate hardwood forest in Ontario, Canada 3 years after the amendment of biochar and P fertilizer using a factorial design experiment. Phospholipid fatty acid analysis indicated that fungal activity was stimulated by biochar and biochar + P addition but not P amendment alone, while bacterial activity increased with all treatments. Concentrations of solvent-extractable acyclic and cyclic lipids, base-hydrolyzable cutin and suberin components, and lignin-derived phenols increased with biochar and biochar + P amendment and to a lesser extent with P fertilization. Biomarker ratios indicated soil OM compositional shifts toward greater proportions of cyclic versus acyclic aliphatic lipids and lignin-derived phenol monomers versus dimers with biochar and biochar + P amendment, but not with P fertilization. Solution-state nuclear magnetic resonance analysis of base-extractable soil OM showed increased proportions of aliphatic lipids and lignin and fewer carbohydrates with all treatments. The results suggest that biochar amendment may alleviate nutrient deficiencies in P-limited forest ecosystems. However, biochar altered the soil microbial community structure and shifted the native soil OM composition toward a greater proportion of recalcitrant OM, which may alter soil OM turnover and nutrient cycling rates with long-term biochar amendment. © 2016, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83347
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada; Environmental NMR Centre and Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, Canada; Faculty of Forestry, University of Toronto, 33 Willcocks Street, Toronto, ON, Canada
Recommended Citation:
Mitchell P.J.,Simpson A.J.,Soong R.,et al. Biochar amendment and phosphorus fertilization altered forest soil microbial community and native soil organic matter molecular composition[J]. Biogeochemistry,2016-01-01,130(3)