Arid
DOI10.1007/s12665-010-0753-6
Spatial information of soil hydraulic conductivity and performance of cokriging over kriging in a semi-arid basin scale
Basaran, Mustafa1; Erpul, G.2; Ozcan, A. U.3; Saygin, D. S.2; Kibar, M.2; Bayramin, I.2; Yilman, F. E.2
通讯作者Basaran, Mustafa
来源期刊ENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
出版年2011
卷号63期号:4页码:827-838
英文摘要

Unlike the studies in small parcels by systematic measurements, the spatial variability of soil properties is expected to increase in those over relatively large areas or scales. Spatial variability of soil hydraulic conductivity (K (h)) is of significance for the environmental processes, such as soil erosion, plant growth, transport of the plant nutrients in a soil profile and ground water levels. However, its variability is not much and sufficiently known at basin scale. A study of testing the performance of cokriging of K (h) compared with that of kriging was conducted in the catchment area of Saraykoy II Irrigation Dam in CankA +/- rA +/-, Turkey. A total of 300 soil surface samples (0-10 cm) were collected from the catchment with irregular intervals. Of the selected soil properties, because the water-stable aggregates (WSA) indicated the highest relationship with the hydraulic conductivity by the Pearson correlation analysis, it is used as an auxiliary variable to predict K (h) by the cokriging procedure. In addition, the sampling density was reduced randomly to n = 175, n = 150, n = 75 and n = 50 for K (h) to determine if the superiority of cokriging over kriging would exist. Statistically, the results showed that all reduced K (h) was as good as the complete K (h) when its auxiliary relations with WSA were used in cokriging. Particularly, the results of the "Relative Reduction in MSE" (RMSE) revealed that the reduced data set of n = 75 produced the most accurate map than the others. In this basin-scaled study, there was a clear superiority of the cokriging procedure by the reduction in data although a very undulating topography and topographically different aspects, two different land uses with non-uniform vegetation density, different parent materials and soil textures were present in the area. Hence, using the statistically significant auxiliary relationship between K (h) and WSA might bring about a very useful data set for watershed hydrological researches.


英文关键词Water-stable aggregates Soil hydraulic conductivity Kriging Cokriging Basin scale
类型Article
语种英语
国家Turkey
收录类别SCI-E
WOS记录号WOS:000290962000015
WOS关键词MULTIVARIATE GEOSTATISTICAL ANALYSIS ; OPTIMAL INTERPOLATION ; AGGREGATE STABILITY ; CLAY SOIL ; VARIABILITY ; PREDICTION ; REGRESSION ; SALINITY ; TERRAIN ; SPLINES
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/167937
作者单位1.Erciyes Univ, Seyrani Fac Agr, Dept Soil Sci, TR-38039 Kayseri, Turkey;
2.Ankara Univ, Dept Soil Sci, Fac Agr, TR-06110 Ankara, Turkey;
3.Karatekin Univ, Cankiri Forestry Fac, TR-18200 Yenimahalle Ankara, Cankiri, Turkey
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GB/T 7714
Basaran, Mustafa,Erpul, G.,Ozcan, A. U.,et al. Spatial information of soil hydraulic conductivity and performance of cokriging over kriging in a semi-arid basin scale[J],2011,63(4):827-838.
APA Basaran, Mustafa.,Erpul, G..,Ozcan, A. U..,Saygin, D. S..,Kibar, M..,...&Yilman, F. E..(2011).Spatial information of soil hydraulic conductivity and performance of cokriging over kriging in a semi-arid basin scale.ENVIRONMENTAL EARTH SCIENCES,63(4),827-838.
MLA Basaran, Mustafa,et al."Spatial information of soil hydraulic conductivity and performance of cokriging over kriging in a semi-arid basin scale".ENVIRONMENTAL EARTH SCIENCES 63.4(2011):827-838.
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