干旱区生态安全与可持续发展服务平台

Trend of soil salinization in Africa and implications for agro-chemical use in semi-arid croplands

Omuto, C. T. ， Kome, G. K. ， Ramakhanna, S. J. ， Muzira, N. M. ， Ruley, J. A. ， Jayeoba, O. J. ， Raharimanana, V. ， Ansah, A. Owusu ， Khamis, N. A. ， Mathafeng, K. K. ， Elmobarak, A. A. ， Vargas, R. R. ， Koetlisi, A. K. ， Dembele, D. ， Diawara, M. ， Mbaikoubou, M. ， Maria, R. M. ， Boukary, I. Adam ， Malatji, A. ， Amin, T. M. ， Kabore, D. ， Mapeshoane, B. E. ， Sichinga, S. ， Kuleile, N. R. ， Mwango, S. B. ， Wiese, L. D. ， Andich, K. ， Isabirye, M. ， Samuel, B. G. M. ， Walleh, M. E. ， Nsharwasi, N. L. ， Musana, S. B. ， Kamara, A. ， Jobe, A. R. ， Cossi, T. B. Oussou ， Nyamai, M.

2024-11-15 SCIENCE OF THE TOTAL ENVIRONMENT 2024   951(卷), null(期), (null页)

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    影响因子:

    • Soil salinization is a gradual degradation process that begins as a minor problem and grows to become a significant economic loss if no control action is taken. It progressively alters the soil environment which eventually negatively affects plants and organism that were not originally adapted for saline conditions. Soil salinization and how its relationship with long-term land use practices affected the soil environment. The study analysed soil hectares of subsoils. About 2 million hectares of croplands were depicted with salinization and >25 million hectares at the risk of salinization in the arid and semi-arid areas. The study also found statistical relationships between semi-arid cropland salinization and trends of agro-chemical use and cropland sizes. There were sigexpansion and applied nitrogenous fertilizers. It found that increasing trend of applied mineral nitrogenous the odds of semi-arid cropland salinization by >10 %. These findings present ground-breaking baseline information for future works on sustainable land-use practices that can control cropland soil salinization in Africa.

    关键词

    Salinization Spatial modelling Agro-chemicals Electrical conductivity Africa Soil

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