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Changes in soil organic and inorganic carbon stocks in deep profiles following cropland abandonment along a precipitation gradient across the Loess Plateau of China
Han, Xiaoyang1,2; Gao, Guangyao1,2; Chang, Ruiying3; Li, Zongshan1; Ma, Ying4; Wang, Shuai; Wang, Cong1; Lu, Yihe1,2; Fu, Bojie1,5
2018-04-15
Source PublicationAGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
Volume258Pages:1-13
Corresponding AuthorGao, Guangyao(gygao@rcees.ac.cn)
AbstractDetermining changes in soil organic carbon (SOC) and inorganic carbon (SIC) stocks following ecological restoration is important for estimating the regional carbon budget and evaluating ecological effects. However, there is limited understanding on the interacting effects of vegetation restoration and climate gradients on SOC and SIC stocks in shallow and deep soil layers over large scales. This study selected seven sites along a climate transect from the east to the west of the Chinese Loess Plateau, and the SOC and SIC stocks were measured to a depth of 300 cm in sites covered by cropland and three vegetation restoration types (grassland, shrubland and woodland). The spatial variations and controlling factors of the SOC and SIC stocks at different depths following vegetation restoration along the precipitation gradient were investigated in detail. The results indicated that the SOC and SIC stocks in the 100-300 cm layers accounted for more than 50% of the total values in the 0-300 cm profile. The total SOC stock in the 0-300 cm profiles significantly increased along precipitation gradient (p < 0.01) in all vegetation types except woodland. The total SIC stock decreased, but the change was not significant, which caused little variation in the total carbon stocks along the precipitation gradient (p > 0.05). Shrubland and woodland plantation following cropland abandonment resulted in soil carbon accumulation, whereas grassland represented carbon loss in sites with mean annual precipitation (MAP) greater than 470 mm. The changes in the SOC stock (ASOC) in the surface layer (0-20 cm) and those in the SIC stock (ASIC) in the deep layers (100-300) following revegetation significantly decreased along precipitation gradient (p < 0.05). The interactions between Delta SOC and Delta SIC stocks were evident, especially in the upper soil layers. An accumulation of 1 kg SOC was accompanied by 0.73 kg loss of SIC in the 0-40 cm layer and 1.26 kg increase of SIC in the 40-300 cm layer per square meter following revegetation. MAP and mean annual temperature (MAT) mainly affected the spatial patterns of SOC and SIC in the upper layers, while land use and soil texture mainly affected soil carbon in the deep layers. This study indicates that vegetation restoration does not always result in soil carbon sequestration at every depth after cropland abandonment, which depends on climatic conditions and varies among different vegetation types.
KeywordSOC and SIC Shallow and deep layers Precipitation gradient Vegetation restoration Loess Plateau
DOI10.1016/j.agee.2018.02.006
WOS KeywordLAND-USE CHANGE ; NATURAL VEGETATION RESTORATION ; FOR-GREEN PROGRAM ; GRASSLAND RESTORATION ; VERTICAL-DISTRIBUTION ; NITROGEN STORAGE ; USE CONVERSION ; CLIMATE-CHANGE ; SEQUESTRATION ; AFFORESTATION
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFC0501602] ; National Natural Science Foundation of China[41390462] ; State Key Laboratory of Urban and Regional Ecology of China[SKLURE2017-1-2] ; Fundamental Research Funds for the Central Universities ; Youth Innovation Promotion Association CAS[2016040]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; State Key Laboratory of Urban and Regional Ecology of China ; Fundamental Research Funds for the Central Universities ; Youth Innovation Promotion Association CAS
WOS Research AreaAgriculture ; Environmental Sciences & Ecology
WOS SubjectAgriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS IDWOS:000429394600001
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57391
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGao, Guangyao
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
2.Joint Ctr Global Change Studies, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
5.Beijing Normal Univ, Fac Geog Sci, State Key Lab Bards Surface Proc & Resources, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Han, Xiaoyang,Gao, Guangyao,Chang, Ruiying,et al. Changes in soil organic and inorganic carbon stocks in deep profiles following cropland abandonment along a precipitation gradient across the Loess Plateau of China[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2018,258:1-13.
APA Han, Xiaoyang.,Gao, Guangyao.,Chang, Ruiying.,Li, Zongshan.,Ma, Ying.,...&Fu, Bojie.(2018).Changes in soil organic and inorganic carbon stocks in deep profiles following cropland abandonment along a precipitation gradient across the Loess Plateau of China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,258,1-13.
MLA Han, Xiaoyang,et al."Changes in soil organic and inorganic carbon stocks in deep profiles following cropland abandonment along a precipitation gradient across the Loess Plateau of China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 258(2018):1-13.
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