Soil nutrient maps of Sub-Saharan Africa: assessment of soil nutrient content at 250 m spatial resolution using machine learning
MetadataShow full item record
Hengl, T.; Leenaars, J. G. B.; Shepherd, K. D.; Walsh, M. G.; Heuvelink, G. B. M.; Mamo, T.; Tilahun, H.; Berkhout, E.; Cooper, M.; Fegraus, E.; Wheeler, I.; Kwabena, N. A.2017.Soil nutrient maps of Sub-Saharan Africa: assessment of soil nutrient content at 250 m spatial resolution using machine learning. Nutrient Cycling in Agroecosystems.109(1) 77–102pp. doi:10.1007/s10705-017-9870-x
Permanent link to cite or share this item: https://hdl.handle.net/10568/83171
Spatial predictions of soil macro and micro-nutrient content across Sub-Saharan Africa at 250 m spatial resolution and for 0–30 cm depth interval are presented. Predictions were produced for 15 target nutrients: organic carbon (C) and total (organic) nitrogen (N), total phosphorus (P), and extractable—phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), sodium (Na), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), aluminum (Al) and boron (B). Model training was performed using soil samples from ca. 59,000 locations (a compilation of soil samples from the AfSIS, EthioSIS, One Acre Fund, VitalSigns and legacy soil data) and an extensive stack of remote sensing covariates in addition to landform, lithologic and land cover maps. An ensemble model was then created for each nutrient from two machine learning algorithms.
Showing items related by title, author, creator and subject.
Title:Rapid characterization of organic resource quality for soil and livestock management in tropical agroecosystems using near-infrared spectroscopy Date:2003Type:Journal ArticleStatus:Limited Access
Title:Greater contribution of low-nutrient tolerance to sorghum and maize growth under combined stress conditions with high aluminum and low nutrients in solution culture simulating the nutrient status of tropical acid soils Authors:Akhter, A; Khan, SH; Hiroaki, E; Tawaraya, K; Rao, Idupulapati M.; Wenzl, Peter; Ishikawa, S; Wagatsuma, TDate:2009Type:Journal ArticleStatus:Open Access