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Effects of revegetation and precipitation gradient on soil carbon and nitrogen variations in deep profiles on the Loess Plateau of China
Tuo, Dengfeng1; Gao, Guangyao1,2; Chang, Ruiying3; Li, Zongshan1; Ma, Ying4; Wang, Shuai5; Wang, Cong1; Fu, Bojie1,2
2018-06-01
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume626Pages:399-411
Corresponding AuthorGao, Guangyao(gygao@rcees.ac.cn)
AbstractPrecipitation is one of the most important factors affecting the variations in soil carbon (C) and nitrogen (N) following revegetation. However, the effects of revegetation and precipitation gradients on soil organic carbon (SOC), total nitrogen (TN) and C-N interactions in deep profiles over large scales are poorly understood. This study measured the SOC and TN stocks to depth of 300 cm in three revegetation types (grassland, shrubland and forestland) and paired cropland stands at seven sites along a precipitation gradient with mean annual precipitation (MAP) from 280 to 540 mm yr(-1) in the Loess Plateau of China. The results showed that the SOC and TN stocks in the 0-300 cm profile increased along the precipitation gradient. Revegetation did not always result in accumulation of SOC and TN stocks, which depended on the precipitation condition and varied among different vegetation types. Grassland restoration resulted in more SOC and TN accumulation than shrubland and forestland in areas with MAP < 510 mm, whereas there were losses in SOC and TN following grass plantation in sites with MAP > 510 mm. The changes in SOC and TN stocks following revegetation (Delta SOC and Delta TN) were significantly correlated with MAP in only the 0-20 cm layer, whereas the changes in the C/N ratio of each depth were significantly and negatively correlated with MAP. The correlations between Delta SOC and Delta TN were stronger in the 0-60 cm layer than that in the 60-300 cm layer, and an accumulation of 1 g TN was associated with approximately 7.9 g increase of SOC in the 0-300 cm profile following revegetation. This study indicated that the changes in soil C and N stocks following revegetation had different patterns along precipitation gradient and among depths, and grassland restoration and N fertilizer input benefitted soil C and N sequestration in drier areas. (c) 2018 Elsevier B.V. All rights reserved.
KeywordSoil C and N stocks C and N interaction Deep layer Precipitation gradient Vegetation restoration
DOI10.1016/j.scitotenv.2018.01.116
WOS KeywordLAND-USE CHANGES ; ORGANIC-CARBON ; CLIMATE-CHANGE ; COMMUNITY STRUCTURE ; AFFORESTATION ; FOREST ; DYNAMICS ; WATER ; SEQUESTRATION ; IMPACTS
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFC0501602] ; National Natural Science Foundation of China[41390462] ; Youth Innovation Promotion Association CAS[2016040]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000428194000040
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57443
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 Earth Surface Proc & Resources Ecol, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Tuo, Dengfeng,Gao, Guangyao,Chang, Ruiying,et al. Effects of revegetation and precipitation gradient on soil carbon and nitrogen variations in deep profiles on the Loess Plateau of China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,626:399-411.
APA Tuo, Dengfeng.,Gao, Guangyao.,Chang, Ruiying.,Li, Zongshan.,Ma, Ying.,...&Fu, Bojie.(2018).Effects of revegetation and precipitation gradient on soil carbon and nitrogen variations in deep profiles on the Loess Plateau of China.SCIENCE OF THE TOTAL ENVIRONMENT,626,399-411.
MLA Tuo, Dengfeng,et al."Effects of revegetation and precipitation gradient on soil carbon and nitrogen variations in deep profiles on the Loess Plateau of China".SCIENCE OF THE TOTAL ENVIRONMENT 626(2018):399-411.
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