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http://krishi.icar.gov.in/jspui/handle/123456789/36224| Title: | Spatial Variability of Soil Properties in Brahmaputra Plains of North-eastern India: A Geostatistical Approach |
| Other Titles: | Not Available |
| Authors: | S.K. Reza, Utpal Baruah, Dipak Sarkar |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR::National Bureau of Soil Survey and Land Use Planning |
| Published/ Complete Date: | 2012-01-01 |
| Project Code: | Not Available |
| Keywords: | Spatial variability, kriging, semivariogram, accuracy assessment, soil properties, Brahmaputra plains |
| Publisher: | Indian Society of Soil Science |
| Citation: | Not Available |
| Series/Report no.: | Not Available; |
| Abstract/Description: | The objective of this study was to determine, the degree of spatial variability of pH, organic carbon (OC), available nitrogen (AN) and available potassium (AK) of Goalpara district of Assam. A total of 1397 soil samples from a depth of 0-25 cm at an approximate interval of 1 km were collected over the entire district. Data were analyzed both statistically and geostatistically on the basis of semivariogram. Soil properties showed large variability with greatest variation observed in AK (42%) whereas the smallest variation was in pH (16%). The semivariogram for all soil properties were best fitted by exponential models and showed a highest (3.8 km) range for pH and lowest (2.0 km) for AN. The nugget/sill ratio indicates a strong dependence for pH (19%), moderate spatial dependence for OC (60%) and a weak spatial dependence for other soil properties. Evaluation of spatial maps indicated that except for AN, kriging could successfully interpolate other soil properties. Soil pH was significantly negatively correlated with OC (r = -0.434 * * ) and AN (r = -0.228 * * ). A significant positive relationship was observed between OC with AN (r = 0.498 * * ) and AK (r = 0.119 * * ). |
| Description: | Not Available |
| ISSN: | Not Available |
| Type(s) of content: | Research Paper |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Journal of the Indian Society of Soil Science |
| NAAS Rating: | 5.31 |
| Volume No.: | 60(2) |
| Page Number: | 108-115 |
| Name of the Division/Regional Station: | Not Available |
| Source, DOI or any other URL: | Not Available |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/36224 |
| Appears in Collections: | NRM-NBSSLUP-Publication |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| JISSS-2012-Spatial Variability of Soil Properties in Brahmaputra Plains.pdf | 1.56 MB | Adobe PDF | View/Open |
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