Desta, G and Abera, W and Tamene, L and Amede, T (2021) A meta-analysis of the effects of land management practices and land uses on soil loss in Ethiopia. Agriculture, Ecosystems and Environment (TSI), 322 (107635). pp. 1-12. ISSN 1873-2305
Full text not available from this repository.Abstract
Over the last three decades, land management practices have been extensively implemented in Ethiopia. Different attempts have been made to assess the effects of land management practices on soil loss at plot scales under a range of climatic and land use conditions. However, the plot-level studies were mostly focused on limited sites and were inadequate to show the effects of land management and land cover practices across a range of practices and under various environmental contexts. A meta-analysis of 82 plot-level experiments in 59 sites was conducted to assessing the effects of land management practices and land use/cover types on soil loss relative to control practice. Random effects were accounted for the association of soil loss and environmental factors including mean annual rainfall, soil texture, and slope length. The results showed that there were significant mean soil loss differences among the categories of land management and land cover practices (p < 0.049). A large amount of residual heterogeneity (I2 = 92%) suggests that the groups of practices are heterogeneous. Mechanical erosion control and agronomic practices with the largest number of studies and somewhat area closure showed large heterogeneity across experiments.The overall mean soil loss ratio of mechanical (0.086, R2 = 81%), agronomic (0.21, R2 = 85%), and area closure (0.09, R2 = 52%) practices were significant to reduce soil loss. There was no residual heterogeneity exhibited across studies for the rest of four groups of practices. The mean soil loss ratio of mechanical practices under non-cropland, annual cropland cover, drainage, and noncropland cover types were 0.12, 0.14, 0.27, and 0.29, respectively. Yet, with a certain level of inconsistency, the overall effects of all groups of land management and land cover practices were positive. In general, the sensitivity of environmental factors and their magnitude of association with soil loss ratio could imply that the effects of the range of land management practices and land cover types on soil loss are very contextual.
| Item Type: | Article |
|---|---|
| Divisions: | Global Research Program - Resilient Farm and Food Systems |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Plot-level studies, Mean effect of practices, Soil loss ratio, Heterogeneity |
| Subjects: | Others > Soil Others > Ethiopia |
| Depositing User: | Mr Ramesh MNR |
| Date Deposited: | 06 Jan 2023 12:00 |
| Last Modified: | 06 Jan 2023 12:00 |
| URI: | http://oar.icrisat.org/id/eprint/12037 |
| Official URL: | https://doi.org/10.1016/j.agee.2021.107635 |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | We appreciate the support of the CGIAR Research Program on Water, Land, and Ecosystems (WLE) which is carried out with support from the CGIAR Trust Fund. For details visit https://wle.cgiar.org/donors. We also recognize the support of the USAID Feed the Future funded Africa RISING program which cover staff time of co-authors. We also thank the people who assisted in organizing the synthesis of peer-reviewed publications. |
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