IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Long-term effects of management history on carbon dynamics in agricultural soils in Northwest China
Zhang, F.1; Li, C.2; Wang, Z.3; Li, X.1
2016
Source PublicationENVIRONMENTAL EARTH SCIENCES
Volume75Issue:1
SubtypeArticle
AbstractHuman activities and climate change have substantial effects on soil ecosystems. The historical variations in soil organic carbon (SOC) in Northwest China were investigated in this paper. Using an agro-ecosystems database, a process-based model, Denitrification-Decomposition (DNDC), was used to support a regional SOC simulation. Over the 1980s and 1990s, the SOC storage (0-50 cm) reduced slightly from 1.25 PgC (pentagrams of carbon, 1 PgC = 10(15) gC) and stabilized at 1.23 PgC. SOC significantly differed in Northwest China farmland both temporally and spatially. Climatic variability magnified the response of the spatially heterogeneous region to climate and greatly influenced the vegetation and soil. The SOC increase appeared in areas with a mild and humid climate in the east, including Shaanxi, Gansu, Ningxia and south Xinjiang. Management practices greatly affect SOC dynamics through straw C input, increased 46.31 % C budget and 20.52 % total SOC (TSOC) through 60 % crop residue incorporation. Reducing human disturbance to the surface soil through conservative tillage and improving soil fertility through reasonable nutrient input and water-use efficiency have important implications for C sequestration, emission reduction and soil productivity improvement in arid or semiarid agricultural farmland regions.
KeywordSoil Organic Carbon Crop Management Dndc
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s12665-015-4801-0
WOS KeywordGLOBAL CLIMATE-CHANGE ; ORGANIC-MATTER ; MODELING IMPACTS ; NET FLUX ; SEQUESTRATION ; FERTILITY ; PHENOLOGY ; FARMLAND ; SYSTEMS ; 1980S
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000370239800065
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5834
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Environm Sci & Technol, Xian 710049, Peoples R China
2.Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA
3.Chinese Acad Sci, IEE, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
Recommended Citation
GB/T 7714
Zhang, F.,Li, C.,Wang, Z.,et al. Long-term effects of management history on carbon dynamics in agricultural soils in Northwest China[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(1).
APA Zhang, F.,Li, C.,Wang, Z.,&Li, X..(2016).Long-term effects of management history on carbon dynamics in agricultural soils in Northwest China.ENVIRONMENTAL EARTH SCIENCES,75(1).
MLA Zhang, F.,et al."Long-term effects of management history on carbon dynamics in agricultural soils in Northwest China".ENVIRONMENTAL EARTH SCIENCES 75.1(2016).
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