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	Multivariate Empirical Mode Decomposition Derived Multi-Scale Spatial Relationships between Saturated Hydraulic Conductivity and Basic Soil Properties
	She, Dongli1,2; Zheng, Jiaxing1; Shao, Ming'an3; Timm, Luis Carlos4; Xia, Yongqiu2
刊名	CLEAN-SOIL AIR WATER
	2015-06-01
卷号	43期号:6页码:910-918
关键词	Intrinsic mode functions Landscape transects Multivariate empirical mode decomposition Scale Soil hydraulic property
ISSN号	1863-0650
DOI	10.1002/clen.201400143
通讯作者	Xia, Yongqiu(yqxia@issas.ac.cn)
英文摘要	Saturated hydraulic conductivity (K-s) is affected by various factors operating at different scales. This study identified the multi-scale spatial relationships between Ks and selected basic soil properties (soil organic matter [SOM], clay, silt, and sand contents, and bulk density) along two landscape transects (with various soil textures and land use covers) on the Loess Plateau. Multivariate empirical mode decomposition (MEMD) yielded four different intrinsic mode functions (IMFs) for the multivariate data series of each transect according to the scale of occurrence. The dominant scales in terms of explained variance of Ks were IMF1 (scale: 403 m) for transect 1, and IMF1 and IMF2 (scale: 407 and 775 m) for transect 2. The multi- scale correlation between Ks and soil properties was more complex for transect 1 due to a more fragmented landscape. For each IMF or residue, Ks was predicted using the identified factors that significantly affected it at that IMF scale or residue. The summation of the four predicted IMFs and the residue predicted Ks at the measurement scale, and was more accurate than predictions based on simple multiple linear regressions between Ks and the other soil properties. Soil particle size components were the main contributors in explaining Ks variability for both landscape transects, mostly due to their contributions from IMF1; however, SOM was also a major contributor for transect 2, mainly due to contributions from IMF2. Using MEMD has great potential in characterizing scale- dependent spatial relationships between soil properties in complicated landscape ecosystems.
收录类别	SCI
WOS关键词	LOESS PLATEAU ; PHYSICAL-PROPERTIES ; CHINA ; INFORMATION ; PATTERNS ; SURFACE
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS类目	Environmental Sciences ; Marine & Freshwater Biology ; Water Resources
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000356699800014
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558371
专题	南京土壤研究所
通讯作者	Xia, Yongqiu
作者单位	1.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Key Lab Efficient Irrigat Drainage & Agr Soil Wat, Minist Educ, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 4.Univ Fed Pelotas, Fac Agron, Dept Rural Engn, Pelotas, RS, Brazil
推荐引用方式 GB/T 7714	She, Dongli,Zheng, Jiaxing,Shao, Ming'an,et al. Multivariate Empirical Mode Decomposition Derived Multi-Scale Spatial Relationships between Saturated Hydraulic Conductivity and Basic Soil Properties[J]. CLEAN-SOIL AIR WATER,2015,43(6):910-918.
APA	She, Dongli,Zheng, Jiaxing,Shao, Ming'an,Timm, Luis Carlos,&Xia, Yongqiu.(2015).Multivariate Empirical Mode Decomposition Derived Multi-Scale Spatial Relationships between Saturated Hydraulic Conductivity and Basic Soil Properties.CLEAN-SOIL AIR WATER,43(6),910-918.
MLA	She, Dongli,et al."Multivariate Empirical Mode Decomposition Derived Multi-Scale Spatial Relationships between Saturated Hydraulic Conductivity and Basic Soil Properties".CLEAN-SOIL AIR WATER 43.6(2015):910-918.

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