Impacts of land use and salinization on soil inorganic and organic carbon in the middle-lower Yellow River Delta
Guo, Yang1,4; Wang, Xiujun1; Li, Xianglan1; Xu, Minggang2; Li, Yuan3; Zheng, Haonan1; Luo, Yongming3; Smith, Pete4
Source PublicationPEDOSPHERE
ISSN1002-0160
2021-10-01
Volume31Issue:6Pages:839-848
KeywordC densities C stocks land use type salt-affected soil soil salinization
DOI10.1016/S1002-0160(21)60018-8
Corresponding AuthorWang, Xiujun(xwang@bnu.edu.cn) ; Li, Xianglan(xlli@bnu.edu.cn)
AbstractSoil inorganic carbon (SIC) is an important reservoir of carbon (C) in arid, semi-arid, and semi-humid regions. However, knowledge is incomplete on the dynamics of SIC and its relationship with soil organic C (SOC) under different land use types in the semi-humid region, particularly in coastal zones impacted by soil salinization. We collected 170 soil samples from 34 profiles across various land use types (maize-wheat, cotton, paddy, and reed) in the middle-lower Yellow River Delta (YRD), China. We measured soil pH, electrical conductivity (EC), water-soluble salts, and SOC and SIC contents. Our results showed significant differences in both SOC and SIC among land use types. The dry cropland (maize-wheat and cotton) soils had significantly higher SOC and SIC densities (4.71 and 15.46 kg C m, respectively) than the paddy soils (3.28 and 14.09 kg Cm-2, respectively) in the 0-100 cm layer. Compared with paddy soils, reed soils contained significantly higher SOC (4.68 kg Cm-2) and similar SIC (15.02 kg Cm-2) densities. There was a significant positive correlation between SOC and SIC densities over a 0-100 cm soil depth in dry cropland soils, but a negative relationship in the paddy soils. On average, SOC and SIC densities under maize-wheat cropping were 15% and 4% lower, respectively, in the salt-affected soils in the middle-lower YRD than the upper YRD. This study indicated that land use types had great influences on both SOC and SIC and their relationship, and salinization had adverse effect on soil C storage in the YRD.
Funding OrganizationNational Natural Science Foundation of China ; Newton Fund via Biotechnology and Biological Sciences Research Council (BBSRC)
Indexed BySCI
Language英语
WOS KeywordGLOBAL CLIMATE-CHANGE ; LOESS PLATEAU ; VERTICAL-DISTRIBUTION ; SEQUESTRATION ; CHINA ; STOCKS ; FERTILIZATION ; DYNAMICS ; CROPLAND ; MATTER
WOS Research AreaAgriculture
WOS IDWOS:000671197100001
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/29474
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
Corresponding AuthorWang, Xiujun; Li, Xianglan
Affiliation1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China
2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China
4.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland
Recommended Citation
GB/T 7714
Guo, Yang,Wang, Xiujun,Li, Xianglan,et al. Impacts of land use and salinization on soil inorganic and organic carbon in the middle-lower Yellow River Delta[J]. PEDOSPHERE,2021,31(6):839-848.
APA Guo, Yang.,Wang, Xiujun.,Li, Xianglan.,Xu, Minggang.,Li, Yuan.,...&Smith, Pete.(2021).Impacts of land use and salinization on soil inorganic and organic carbon in the middle-lower Yellow River Delta.PEDOSPHERE,31(6),839-848.
MLA Guo, Yang,et al."Impacts of land use and salinization on soil inorganic and organic carbon in the middle-lower Yellow River Delta".PEDOSPHERE 31.6(2021):839-848.
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