Soil loss tolerance in calcareous soils of a semiarid region
Evaluation, prediction, and influential parameters
Bibliographic Data
| ID | 21648834 |
|---|---|
| Authors | Yaser Ostovari (0000-0003-1692-6185, Department of Soil Science, College of Agriculture Shiraz University Shiraz Iran), Ali Akbar Moosavi (0000-0003-0305-2829, Department of Soil Science, College of Agriculture Shiraz University Shiraz Iran, corresponding author), Hamid Reza Pourghasemi (0000-0003-2328-2998, Department of Natural Resources and Environment Engineering, College of Agriculture Shiraz University Shiraz Iran) |
| Year | 2020 |
| Volume | 31 |
| Issue | 15 |
| Pages | 2156-2167 |
| Publication date | 2020-09-01 |
| 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.3597 |
| OpenAlex | W3010623261 |
| Language | EN |
| Citations received | 2 |
| References cited | 33 |
Predicting soil loss tolerance ( T ‐value) as a first and crucial step in assessing soil erosion using pedotransfer functions (PTFs) could save time and cost. Therefore, this study aimed to evaluate T ‐value and its influential parameters for calcareous soils of the Dorudzan Watershed, Fars Province, Iran, and to develop PTFs for its prediction using easily measureable soil properties. T ‐value was determined in 60 soil profiles based on the soil thickness method. Various basic soil properties were used to develop five PTFs using stepwise multiple linear regression. T ‐value varied from 3.5 to 22.5 with a mean value of 10.4 t ha −1 yr −1 , which is approximately equal to the proposed value by US Department of Agriculture (11 t ha −1 yr −1 ). T ‐value in Inceptisols located in the dam shore and agricultural lands was significantly higher than that of Entisols located in the forest and rangelands. Organic matter (OM) with a correlation coefficient of .77 with T ‐value was the most influential variable in prediction of T ‐value. The PTF 5, which used OM, soil aggregate stability, and permeability, with the highest R 2 (0.72 and 0.79), the lowest mean error (−0.44 and 1.75 t ha −1 yr −1 ), the lowest root mean square error (2.98 and 2.75 t ha −1 yr −1 ) and the minimum Akaike information criterion (51.1 and 17.2) provided the best predictions for T ‐value. However, when considering the acceptable indices and easier measureable soil properties (OM, soil erodibility, and pH) in PTF 3, we concluded that it was the best model to predict T ‐value. Generally, the application of thickness method is recommended to determine T ‐value in semiarid regions
Akaike information criterion · Entisol · Geotechnical engineering · Hydraulic conductivity · Linear regression · Pedotransfer function · Silt · Soil water · Statistics · Stepwise regression · Environmental Science · Mathematics · Soil and Unsaturated Flow · Soil Carbon and Nitrogen Dynamics · Soil erosion and sediment transport · Geology · Soil Science
| Citations per year | 0.5 |
|---|---|
| Citation span | 2022 - 2022 (1) |
| Highly cited | No |