DOI: 10.1007/s10533-013-9868-7
Scopus记录号: 2-s2.0-84891903166
论文题名: Biological indicators of soil quality and soil organic matter characteristics in an agricultural management continuum
作者: Veum K.S. ; Goyne K.W. ; Kremer R.J. ; Miles R.J. ; Sudduth K.A.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 117, 期: 1 起始页码: 81
结束页码: 99
语种: 英语
英文关键词: Dehydrogenase
; Diffuse reflectance infrared Fourier transform (DRIFT)
; Nuclear magnetic resonance (NMR)
; Phenol oxidase
; Soil management assessment framework (SMAF)
; Soil quality
; Visible near-infrared reflectance (VNIR)
Scopus关键词: agricultural management
; biogeochemistry
; bioindicator
; carbon isotope
; decomposition
; enzyme activity
; fertilizer application
; land management
; maize
; nuclear magnetic resonance
; soil management
; soil organic matter
; soil quality
; Missouri
; United States
; Phleum pratense
; Triticum aestivum
; Zea mays
英文摘要: Relationships among biological indicators of soil quality and organic matter characteristics were evaluated across a continuum of long-term agricultural practices in Missouri, USA. In addition to chemical and physical soil quality indicators, dehydrogenase and phenol oxidase activity were measured, 13C nuclear magnetic resonance (13C NMR) and diffuse reflectance Fourier transform (DRIFT) spectra of soil organic matter were collected, and visible, near-infrared reflectance (VNIR) spectra of whole soil were collected. Enzyme activities were positively correlated with several soil quality indicators and labile fractions of soil organic matter (r = 0.58-0.92), and were negatively correlated with DRIFT indices of decomposition stage and recalcitrance (r = -0.62 to -0.76). A comparison of vegetative and land management practices was scored using the soil management assessment framework (SMAF)-a soil quality index. Perennial vegetation (i.e., native prairie, restored prairie, and timothy) plots exhibited the greatest soil quality (SMAF scores 93.6-98.6 out of 100), followed by no-till and conventionally cultivated plots, with wheat outranking corn. Among fertilization practices, soil quality followed the order: manure > inorganic fertilizer > unamended soil. Finally, in the estimation of soil properties, VNIR spectra generally outperformed DRIFT spectra using partial least squares regression (PLSR) and multiple, linear regression (MLR). The strongest estimates of dehydrogenase and phenol oxidase activity were found using MLR models of VNIR spectra (R2 > 0.78, RPD > 2.20). Overall, this study demonstrates the potential utility and versatility of enzymes in modeling and assessing changes in soil organic carbon fractions and soil quality, and emphasizes the benefits of maintaining long-term agricultural experiments. © 2013 US Government. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83679
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 Soil, Environmental and Atmospheric Sciences, University of Missouri, 302 ABNR Building, Columbia, MO, 65211-7250, United States; U.S. Department of Agriculture-Agricultural Research Service, Cropping Systems and Water Quality Unit, 302 ABNR Building, Columbia, MO, 65211-7250, United States
Recommended Citation:
Veum K.S.,Goyne K.W.,Kremer R.J.,et al. Biological indicators of soil quality and soil organic matter characteristics in an agricultural management continuum[J]. Biogeochemistry,2014-01-01,117(1)