Modified Method for Estimating Organic Carbon Density in Discontinuous Karst Soil Using Ground-Penetrating Radar and Geostatistics

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 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
刊名	Journal of Mountain Science
	2015-09
卷号	12 期号:5 页码:1229-1240
关键词	Discontinuous soil Organic carbon density Soil distribution Estimation method Ground penetrating radar Karst Peak cluster depression
ISSN号	1672-6316
通讯作者	SU Yi-rong
英文摘要	The 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.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/10891]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.5
推荐引用方式 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.