IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2017  > Vol14 No.12
Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China
Zhao, Ji-xia1,2; Dai, Fu-qiang3; He, Shou-jia4; Zhang, Qing4; Liu, Gang-cai1
2017
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume14Issue:12Pages:2484-2497
SubtypeArticle
AbstractThe dynamics of soil organic carbon (SOC) in cropland is one of the central issues related to both soil fertility and environmental safety. However, little information is available at county level regarding the spatiotemporal variability of SOC in the southwestern mountainous region of China. Thus, this study aimed to explore spatiotemporal changes of SOC in the cultivated soil layer of dry land in Mojiang County, Yunnan Province, China. Data were obtained from the second national soil survey (SNSS) of 1985 and soil tests for fertilizer application carried out by the Mojiang Agricultural Bureau in 2006. The ANOVA test was applied to determine any significant differences between the datasets, while semivariogram analysis was performed on geostatistics via an ordinary Kriging method in order to map spatial patterns of soil organic carbon density (SOCD). The results revealed that SOCD in the cultivated soil layer significantly decreased from 3.93 kg m(-2) in 1985 to 2.89 kg m(-2) in 2006, with a total soil organic carbon stock (SOCS) decrease of 41.54x10(4) t over the same period. SOCS levels fell most markedly in yellow-brown soil at a rate of 51.52%, while an increase of 8.70% was found in the analysed latosol. Geostatistical analysis also showed that the recorded changes in SOCD between 1985 and 2006 were spatially structured. The decreasing trend might be attributed to the combined action of intense cultivation, major crop residue removal without any protective tillage measures, unreasonable fertilization and natural climatic diversity inducing a large decrease in SOC in the studied cultivated dry land region of Mojiang County. Therefore, management measures such as protective tillage should be undertaken in order to enhance soil C sequestration.
KeywordSoil Organic Carbon Spatiotemporal Changes Dry Land Cultivated Soil Layer Yunnan Plateau
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-016-4314-7
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordNORTHERN GREAT-PLAINS ; LONG-TERM APPLICATION ; PADDY SOILS ; TERRESTRIAL ECOSYSTEMS ; CROPLAND SOILS ; CLIMATE-CHANGE ; CO2 EMISSIONS ; LOESS SOIL ; SEQUESTRATION ; MATTER
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000418074700009
Funding OrganizationAgriculture Ministry of China(201503119) ; Natural Science Foundation of China(41471232)
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20637
CollectionJournal of Mountain Science_Journal of Mountain Science-2017_Vol14 No.12
山地灾害与地表过程重点实验室
Corresponding AuthorLiu, Gang-cai
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chongqing Technol & Business Univ, Coll Tourism & Land Resources, Chongqing 400067, Peoples R China
4.Yunnan Acad Agr Sci, Agr Environm & Resources Res Inst, Kunming 650205, Yunnan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhao, Ji-xia,Dai, Fu-qiang,He, Shou-jia,et al. Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2017,14(12):2484-2497.
APA Zhao, Ji-xia,Dai, Fu-qiang,He, Shou-jia,Zhang, Qing,&Liu, Gang-cai.(2017).Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China.JOURNAL OF MOUNTAIN SCIENCE,14(12),2484-2497.
MLA Zhao, Ji-xia,et al."Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China".JOURNAL OF MOUNTAIN SCIENCE 14.12(2017):2484-2497.
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