IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.5
Modified Method for Estimating Organic Carbon Density in Discontinuous Karst Soil Using Ground-Penetrating Radar and Geostatistics
LI Lei; XIA Yin-hang; LIU Shu-juan; ZHANG Wei; CHEN Xiang-bi; ZHENG Hua; QIU Hu-sen; HE Xun-yang; SU Yi-rong
Corresponding AuthorSU Yi-rong
2015-09
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume12Issue:5Pages:1229-1240
Subtype期刊论文
AbstractThe conventional method which assumes the soil distribution is continuous was unsuitable for estimating soil organic carbon density (SOCD) in Karst areas because of its discontinuous soil distribution. The accurate estimation of SOCD in Karst areas is essential for carbon sequestration assessment in China. In this study, a modified method, which considers the vertical proportion of soil area in the profile when calculating the SOCD, was developed to estimate the SOCD in a typical Karst peak-cluster depression area in southwest China. In the modified method, ground-penetrating radar (GPR) technology was used to detect the distribution and thickness of soil. The accuracy of the method was confirmed through comparison with the data obtained using a validation method, in which the soil thickness was measured by excavation. In comparison with the conventional method and average-soil-depth method, the SOCD estimated using the GPR method showed the minimum relative error with respect to that obtained using the validation method. At a regional scale, the average SOCDs at depths of 0-20 cm and 0-100 cm, which were interpolated by ordinary kriging, were 1.49 (ranging from 0.03-5.65) and 2.26 (0.09-11.60) kgm-2based on GPR method in our study area (covering 393.6 hm2), respectively. Therefore, the modified method can be applied on the accurate estimation of SOCD in discontinuous soil areas such as Karst regions.
KeywordDiscontinuous Soil Organic Carbon Density Soil Distribution Estimation Method Ground Penetrating Radar Karst Peak Cluster Depression
DOI10.1007/s11629-015-3431-z
Indexed BySCI
Language英语
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10891
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.5
Recommended Citation
GB/T 7714
LI Lei,XIA Yin-hang,LIU Shu-juan,et al. Modified Method for Estimating Organic Carbon Density in Discontinuous Karst Soil Using Ground-Penetrating Radar and Geostatistics[J]. Journal of Mountain Science,2015,12(5):1229-1240.
APA LI Lei.,XIA Yin-hang.,LIU Shu-juan.,ZHANG Wei.,CHEN Xiang-bi.,...&SU Yi-rong.(2015).Modified Method for Estimating Organic Carbon Density in Discontinuous Karst Soil Using Ground-Penetrating Radar and Geostatistics.Journal of Mountain Science,12(5),1229-1240.
MLA LI Lei,et al."Modified Method for Estimating Organic Carbon Density in Discontinuous Karst Soil Using Ground-Penetrating Radar and Geostatistics".Journal of Mountain Science 12.5(2015):1229-1240.
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