Stable isotope fractionation provides information on carbon dynamics in soil aggregates subjected to different long-term fertilization practices

doi:10.1016/j.still.2017.11.016

CORC > 武汉植物园 > 中国科学院武汉植物园

	Stable isotope fractionation provides information on carbon dynamics in soil aggregates subjected to different long-term fertilization practices
	Liu, Yi 2,3; Hu, Cheng 1; Hu, Wei 4; Wang, Li 2; Li, Zhiguo 2; Pan, Junfeng 2; Chen, Fang 2
刊名	SOIL & TILLAGE RESEARCH
	2018-04-01
卷号	177 页码:54-60
关键词	Soil aggregate Stable isotope natural abundance Long-term fertilization
ISSN号	0167-1987
DOI	10.1016/j.still.2017.11.016
英文摘要	Stable carbon (C) isotopes provide valuable information to study C incorporation in soil aggregates. Different soil aggregate fractions have different concentrations of soil organic C (SOC), and changes in the abundance of soil C isotopes are closely linked to aggregate turnover. Soils from rice-wheat rotation fields in a long-term (31 years) experiment established in subtropical Central China were analyzed to improve knowledge of the influence of long-term fertilization (e.g. inorganic fertilizers) on the organic C isotope composition of different aggregate fractions. Aggregate-associated C levels and delta C-13 values (C-13 to C-12 ratios, relative to a standard) ranged from 19.0 to 23.1 g kg(-1), and from -24.8 to -23.00%, respectively, across all treatments. However, SOC concentrations and delta C-13 values were higher under treatments including inorganic fertilization than under the control (fertilizer-free, CK) treatment. In addition, delta C-13 values of micro-aggregates (< 0.25 mm) were higher than those of macro-aggregates (> 0.25 nun), i.e. the micro-aggregates (< 0.25 mm) exhibited C-13 enrichment. Analyses of C flows between aggregates of different size classes (modelled in a scheme) indicate that C generally flows from macro-aggregates to micro-aggregates (or remains with them as they become successively smaller), and treatments with mineral fertilizers retarded these flows, relative to rates under the CK treatment. The results show that analyses of the natural abundance of stable C isotopes can provide valuable information on biogeochemical processes related to C transformation in soil aggregates.
资助项目	National Science Foundation of China ; Open Funding Project of the State Key Laboratory of Soil Erosion and Dryland Fanning on the Loess Plateau
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000424073900006
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/3775]
专题	中国科学院武汉植物园
通讯作者	Li, Zhiguo; Chen, Fang
作者单位	1.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertilizer, Wuhan 430064, Hubei, Peoples R China 2.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China 3.Chinese Acad Sci & Minist Water Resource, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 4.New Zealand Inst Plant & Food Res Ltd, Private Bag 4704, Christchurch 8140, New Zealand
推荐引用方式 GB/T 7714	Liu, Yi,Hu, Cheng,Hu, Wei,et al. Stable isotope fractionation provides information on carbon dynamics in soil aggregates subjected to different long-term fertilization practices[J]. SOIL & TILLAGE RESEARCH,2018,177:54-60.
APA	Liu, Yi.,Hu, Cheng.,Hu, Wei.,Wang, Li.,Li, Zhiguo.,...&Chen, Fang.(2018).Stable isotope fractionation provides information on carbon dynamics in soil aggregates subjected to different long-term fertilization practices.SOIL & TILLAGE RESEARCH,177,54-60.
MLA	Liu, Yi,et al."Stable isotope fractionation provides information on carbon dynamics in soil aggregates subjected to different long-term fertilization practices".SOIL & TILLAGE RESEARCH 177(2018):54-60.