干旱区生态环境知识资源中心(Arid): Spatial variability and mapping of selected soil properties in Kaligaudanahalli Microwatershed, Gundlupet Taluk, Chamarajanagar District, under hot semi arid agrosubregion of Central Karnataka Plateau, India

Arid

DOI	10.1007/s42452-019-0486-4
	Spatial variability and mapping of selected soil properties in Kaligaudanahalli Microwatershed, Gundlupet Taluk, Chamarajanagar District, under hot semi arid agrosubregion of Central Karnataka Plateau, India
	Hegde, Rajendra; Bardhan, G.; Niranjana, K., V; Bhaskar, B. P.; Singh, S. K.
通讯作者	Hegde, R
来源期刊	SN APPLIED SCIENCES
ISSN	2523-3963
EISSN	2523-3971
出版年	2019
卷号	1 期号:6
英文摘要	The soil attributes of spatially structured data were often measured in Central plateau, of Karnataka, but often poorly defined spatial variability of soil attributes important for land management under hot semiarid agroecological environment. The Kaligaudanahalli microwatershed (612 ha) divided into 250 m x 250 m square grids using ArcGIS and collected surface soils (0-15 cm) at 89 locations. The results of cluster analysis with average linkage method revealed four soil typologies viz., slightly alkaline, sandy clay loam texture showing high coefficient of variation for all soil variables in cluster-I, but neutral, sandy clay loam with high variability for DTPA-extractable Cu in cluster-II, moderately alkaline sandy clay loam to clay texture with high variability for EC, OC, available K2O, B and Cu for cluster-III and IV. The study concluded that the measured soil properties in regular gird sampling at given scale were enough to capture spatial dependence using ordinary and cokriging techniques and in deriving thematic maps for efficient soil management strategies at watershed level. The results of spatial dependence of each soil property, using ordinary kriging showed that there is strong spatial dependence of pH, EC, -K2O, B, Cu, Fe and Mn with nugget-to-sill ratio [(C-0/C-0 + C)] less than 0.25 showing strong spatial distribution where DTPA-extractable Zn had a nugget/sill more than 0.75, displaying a weak spatial autocorrelation. The results showed that cokriging is the best fit and strongly correlated with EC, P2O5, K2O, Fe and Mn using pH as ancillary variable over ordinary kriging to derive thematic maps.
英文关键词	Cluster analysis Cokriging Kriging Microwatershed Spatial variability Semivariogram
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	ESCI
WOS记录号	WOS:000473663000010
WOS关键词	CARBON ; ZINC
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333649
作者单位	[Hegde, Rajendra; Bardhan, G.; Niranjana, K., V; Bhaskar, B. P.] Natl Bur Soil Survey & Land Use Planning ICAR NBS, Hebbal, Bengaluru, India; [Singh, S. K.] NBSSLUP ICAR, Amravathi Rd, Nagpur 33, Maharashtra, India
推荐引用方式 GB/T 7714	Hegde, Rajendra,Bardhan, G.,Niranjana, K., V,et al. Spatial variability and mapping of selected soil properties in Kaligaudanahalli Microwatershed, Gundlupet Taluk, Chamarajanagar District, under hot semi arid agrosubregion of Central Karnataka Plateau, India[J],2019,1(6).
APA	Hegde, Rajendra,Bardhan, G.,Niranjana, K., V,Bhaskar, B. P.,&Singh, S. K..(2019).Spatial variability and mapping of selected soil properties in Kaligaudanahalli Microwatershed, Gundlupet Taluk, Chamarajanagar District, under hot semi arid agrosubregion of Central Karnataka Plateau, India.SN APPLIED SCIENCES,1(6).
MLA	Hegde, Rajendra,et al."Spatial variability and mapping of selected soil properties in Kaligaudanahalli Microwatershed, Gundlupet Taluk, Chamarajanagar District, under hot semi arid agrosubregion of Central Karnataka Plateau, India".SN APPLIED SCIENCES 1.6(2019).