IEECAS OpenIR  > 生态环境研究室
Regional-scale variation and distribution patterns of soil saturated hydraulic conductivities in surface and subsurface layers in the loessial soils of China
Wang, YQ (Wang, Yunqiang)[ 1,2,3 ]; Shao, MA (Shao, Ming'an)[ 2 ]; Liu, ZP (Liu, Zhipeng)[ 3,4 ]; Horton, R (Horton, Robert)[ 5 ]
2013-04-22
Source PublicationJOURNAL OF HYDROLOGY
Volume487Pages:13-23
Subtype期刊论文
Abstract

Saturated hydraulic conductivity (K-s) is an important soil property that shows a high degree of spatial heterogeneity. There is a lack of research that investigates and determines Ks at a regional scale, due to the challenges associated with the required intensive sampling. To determine the closely correlated factors affecting K-s at a regional scale and to then generate a regional distribution map of K-s, we selected 382 sampling sites across the Loess Plateau of China (620,000 km(2)) and collected undisturbed and disturbed soil samples from two soil layers (0-5 and 20-25 cm). We found that both surface K-s and subsurface K-s had log(base 10)-normal distributions, and demonstrated strong spatial variability (CV = 206% and 135%, respectively). Surface LogK(s) was most closely correlated with LogSand, LogSilt, LogSG (slope gradient), LogSSWC (saturated soil water content), vegetation coverage and land use; while subsurface Logic was correlated with LogClay, SSWC, LogSG, LogAltitude, LogGY (growth year) and land use. Geostatistical analysis indicated that semivariograms of surface and subsurface Log K-s could be best fitted by an isotropic exponential model, with effective ranges of 204 km and 428 km, respectively. Distribution maps of K-s produced by kriging indicated a pronounced spatial pattern and demonstrated an obvious spatial depth gradient. The spatial distribution patterns of K-s at a regional scale in the loessial soils of China comprehensively reflected soil hydraulic properties and the combined effects of soil texture, vegetation, topography and human activities.

KeywordLand Use Soil Texture Principal Component Analysis Minimum Data Set Geostatistics Soil Hydraulic Conductivity
DOI10.1016/j.jhydrol.2013.02.006
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10010
Collection生态环境研究室
Corresponding AuthorShao, MA (Shao, Ming'an)[ 2 ]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi 710075, China;
2.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences,Beijing 100101, China;
3.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources,Yangling 712100, China;
4.Agronomy Department, Iowa State University, Ames, IA 50011, USA
Recommended Citation
GB/T 7714
Wang, YQ ,Shao, MA ,Liu, ZP ,et al. Regional-scale variation and distribution patterns of soil saturated hydraulic conductivities in surface and subsurface layers in the loessial soils of China[J]. JOURNAL OF HYDROLOGY,2013,487:13-23.
APA Wang, YQ ,Shao, MA ,Liu, ZP ,&Horton, R .(2013).Regional-scale variation and distribution patterns of soil saturated hydraulic conductivities in surface and subsurface layers in the loessial soils of China.JOURNAL OF HYDROLOGY,487,13-23.
MLA Wang, YQ ,et al."Regional-scale variation and distribution patterns of soil saturated hydraulic conductivities in surface and subsurface layers in the loessial soils of China".JOURNAL OF HYDROLOGY 487(2013):13-23.
Files in This Item:
File Name/Size DocType Version Access License
Regional-scale varia(1008KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, YQ (Wang, Yunqiang)[ 1,2,3 ]]'s Articles
[Shao, MA (Shao, Ming'an)[ 2 ]]'s Articles
[Liu, ZP (Liu, Zhipeng)[ 3,4 ]]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, YQ (Wang, Yunqiang)[ 1,2,3 ]]'s Articles
[Shao, MA (Shao, Ming'an)[ 2 ]]'s Articles
[Liu, ZP (Liu, Zhipeng)[ 3,4 ]]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, YQ (Wang, Yunqiang)[ 1,2,3 ]]'s Articles
[Shao, MA (Shao, Ming'an)[ 2 ]]'s Articles
[Liu, ZP (Liu, Zhipeng)[ 3,4 ]]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.