Extent and distribution of surface soil acidity in the rainfed areas of Ethiopia
Bibliographic Data
| ID | 21649542 |
|---|---|
| Authors | Gizaw Desta (0000-0002-3565-7665, Resilient Farm and Food System International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT) Addis Ababa Ethiopia Ethiopia, corresponding author), Tibebu Kassawmar (0000-0001-7352-4217, Water and Land Resource Centre (WLRC) Addis Ababa University Addis Ababa Ethiopia), Matebu Tadesse (Water and Land Resource Centre (WLRC) Addis Ababa University Addis Ababa Ethiopia), Gete Zeleke (0000-0001-6698-2455, Water and Land Resource Centre (WLRC) Addis Ababa University Addis Ababa Ethiopia) |
| Year | 2021 |
| Volume | 32 |
| Issue | 18 |
| Pages | 5348-5359 |
| Publication date | 2021-12-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Land Degradation and Development (JOURNAL) |
| Journal identifiers | ISSN: 1085-3278 • E-ISSN: 1099-145X |
| Publisher | Wiley (PUBLISHER • GB) |
| DOI | 10.1002/ldr.4113 |
| OpenAlex | W3202906121 |
| Language | EN |
| References cited | 27 |
The soil acidity level is a key soil characteristic that determines soil nutrient availability, soil microbial activities, and crop growth. This study was carried out to predict the extent and severity of soil acidity based on 109,704 soil pH samples collected from soil laboratories and compiled from various studies. Rainfall, altitude, slope gradient, soil, and land cover were considered to generate multivariate interpolated soil pH surface. The performance of the co–kriging model was found to be satisfactory with a standard error of 0.77, root mean square error of 0.51, and R 2 of 0.74. The model estimates showed that 47% of the Country's total area and 45% of the rainfed areas are acidic (pH 2 ) is found to be extreme to strong acidic (pH 2 ) is moderate acidic (5.6 2 ) is slight acidic (6.0 2 ), 18% (120,500 km 2 ), and 14.6% (97,202 km 2 ). As informed by the model results, integrated acid soil management efforts should be given a priority to severe soil acidity areas of western, central, northwestern, and southern parts of the Country. Thus, appropriate integrated land management techniques that enable to reduce soil acidity and halt land degradation should be initiated, informed by the map produced. Regularly updating the extent and distribution of surface and sub‐surface soil acidity is recommended in future studies
Agronomy · Biology · Land cover · Land use · Soil acidification · Soil pH · Soil test · Soil water · Environmental Science · Mathematics · Soil and Unsaturated Flow · Soil Geostatistics and Mapping · Soil Moisture and Remote Sensing · Ecology · Geology · Soil Science
| Highly cited | No |
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