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Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau
Liu, Weiguo1,2; Wei, Jie1,3; Cheng, Jimin4; Li, Weijun5
2014-10-01
Source PublicationCATENA
Volume121Pages:321-329
AbstractUnderstanding the distribution of soil inorganic carbon (SIC) is meaningful and necessary for assessing soil carbon sequestration. However, changes in SIC following vegetation restoration are still not well studied in the Chinese Loess Plateau (CLP), which has undergone extensive changes from farmland to grassland. Here, we chose three study sites, farmland (FL), grassland restored for 12 years (RG-1) and grassland restored for 22 years (RG-2). The changes of SIC storage were determined under the conversion from a farmland ecosystem to extensively used grassland during the past twenty years. Results showed that the SIC content decreased with vegetation restoration, which averaged 18.5, 13.2 and 11.8 g kg(-1) in FL RG-1 and RG-2, respectively. The SIC content was significantly lower in the top 80 cm in RG-1 and RG-2 than in FL, but showed little variance at depths of 80-200 cm among the study sites. It illustrated that the portion of carbonate was most likely released to the atmosphere as CO2 temporarily due to soil acidification and the increase of soil moisture in restored grassland. The lower delta C-13 value of SIC in RG-1 and RG-2 than in FL was most likely due to the soil carbonate exchanging with more soil respired CO2, with increasing vegetation coverage in restored grassland. Our results indicate that the SIC storage deceases in the restored grassland in situ probably due to the decrease of soil pH and the increase in soil water content The SIC plays an important role when assessing the capacity of carbon sequestration with vegetation restoration in the semi-arid CLP. (C) 2014 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordGrassland Restoration Soil Inorganic Carbon Delta C-13 Value Of Soil Carbonate Ph Soil Water Content Soil Co2
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
WOS Subject ExtendedGeology ; Agriculture ; Water Resources
WOS KeywordORGANIC-CARBON ; STABLE CARBON ; ISOTOPE DISCRIMINATION ; LAND-USE ; CLIMATE ; STORAGE ; VEGETATION ; DESERT ; USA ; SEQUESTRATION
Indexed BySCI
Language英语
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000339694000031
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68486
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Weiguo
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary, Xian 710075, Peoples R China
2.Xi An Jiao Tong Univ, Sch Human Settlement & Civil Engn, Xian 710049, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
5.Adm Off Yunwu Mt Guyuan, Ningxia 756000, Peoples R China
Recommended Citation
GB/T 7714
Liu, Weiguo,Wei, Jie,Cheng, Jimin,et al. Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau[J]. CATENA,2014,121:321-329.
APA Liu, Weiguo,Wei, Jie,Cheng, Jimin,&Li, Weijun.(2014).Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau.CATENA,121,321-329.
MLA Liu, Weiguo,et al."Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau".CATENA 121(2014):321-329.
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