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Jeihouni, M., Alavipanah, S.K., Toomanian, A., Jafarzadeh, A.A.. (1399). Soil texture fractions modeling and mapping using LS-SVR algorithm. , 25(2), 147-154. doi: 10.22059/jdesert.2020.79252
M. Jeihouni; S.K. Alavipanah; A. Toomanian; A.A. Jafarzadeh. "Soil texture fractions modeling and mapping using LS-SVR algorithm". , 25, 2, 1399, 147-154. doi: 10.22059/jdesert.2020.79252
Jeihouni, M., Alavipanah, S.K., Toomanian, A., Jafarzadeh, A.A.. (1399). 'Soil texture fractions modeling and mapping using LS-SVR algorithm', , 25(2), pp. 147-154. doi: 10.22059/jdesert.2020.79252
Jeihouni, M., Alavipanah, S.K., Toomanian, A., Jafarzadeh, A.A.. Soil texture fractions modeling and mapping using LS-SVR algorithm. , 1399; 25(2): 147-154. doi: 10.22059/jdesert.2020.79252

Soil texture fractions modeling and mapping using LS-SVR algorithm

Desert
دوره 25، شماره 2، اسفند 2020، صفحه 147-154    اصل مقاله (740.83 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/jdesert.2020.79252
نویسندگان
M. Jeihouni1؛ S.K. Alavipanah* 2؛ A. Toomanian1؛ A.A. Jafarzadeh3
1Dept. of Remote Sensing and GIS, Faculty of Geography, University of Tehran, Tehran, Iran
2Dept. of Remote Sensing and GIS, Faculty of Geography, University of Tehran, Tehran, Iran and Dept. of Geography, Humboldt University Berlin, Unter den Linden 6, 10099 Berlin, Germany
3Dept. of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
چکیده
     Soil texture is variable through space and controls most of the soil’s Physico-chemical, biological and hydrological characteristics and governs agricultural production and yield. Therefore, determining its variability and generating accurate soil texture maps have a key role in soil management and sustainable agriculture. The purpose of this study is to introduce a numerical algorithm named Least Square Support Vector Machine for Regression (LS-SVR) as a predictive model in Digital Soil Mapping (DSM) of soil texture fractions and evaluating its performances based on modeling evaluation criteria. In this study, the soil texture data of 49 soil profiles in Tabriz plain, Iran, was used. The important covariates were selected using Genetic Algorithm (GA). The model evaluation results based on ME, MAE, RMSE, and R2 indicate the high performance of LS-SVR in predicting soil texture components. The prediction RMSE for sand, silt, and clay was 6.82, 5.08 and 6.06, respectively. Silt prediction had the highest ME and the lowest MAE and RSME values. The algorithm simulated the complex spatial patterns of soil texture fractions and provided high accuracy predictions and maps. Therefore, the LS-SVR algorithm has the capability to be used as predictive models in soil texture digital mapping. This study highlighted the potential of the LS-SVR algorithm in high precision soil mapping. The generated maps can be used as basic information for environmental management and modeling.
کلیدواژه‌ها
Digital Soil Mapping؛ Soil Texture؛ Spatial Variability؛ Soil Management؛ Soil Physical property
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