Spatial variability assessment of some soil nutrient elements using geostatistical methods (Case study: Chadegan, Isfahan province)
Evaluating the spatial variability of soil properties is an important prerequisite for precision agriculture. This research was conducted on 84 soil samples from different areas of Chadegan city (Isfahan province). With the aim of evaluating the spatial variability of some soil nutrient elements, including organic carbon, soil-available phosphorus, potassium, zinc, copper, manganese, and iron. The spatial correlation of each variable with a specific semi-variable and the best fitting model for each variable were selected. Interpolation was done using normal Kriging and Inverse Distance Weighting with powers of 1 to 3 methods. The accuracy of the distribution maps of these variables was evaluated by the Mean bias error (MBE) the standard root mean square error (NRMSE), and the coefficient of determination (R2). The results showed that all studied properties had moderate spatial dependence, which shows the effect of management factors such as fertilization, plowing, irrigation, etc. on these variables. The exponential model was the most accurate to predict organic carbon, phosphorus, potassium and zink variables while iron, copper, and manganese were best fitted with an spherical model. For phosphorus, iron, and copper variables, the Inverse Distance Weighting with the power of 1 (IDW-1) and for organic carbon, potassium, zinc, and manganese normal kriging methods were recognized as the best interpolation methods. According to the spatial distribution maps, the studied area is sufficient in terms of potassium, copper and manganese nutrients, and in other cases, the use of fertilizers and organic materials is necessary to increase soil fertility.
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مقایسه تاثیر کلرورپتاسیم و سولفات پتاسیم بر عملکرد دانه گندم در شرایط شور
پیمان کشاورز*، ، محمد میرزاپور
نشریه شورورزی، پاییز و زمستان 1403 -
Biomonitoring of Potentially Toxic Elements Using Dendrochemistry in Some Areas of Isfahan Province.
A.R Marjovvi, M. Soleimani*, N. Mirghaffari, H. R. Karimzadeh, S. J. Khajeddin
Iranian Journal of Applied Ecology, -
Spatial distribution of some soil physico-chemical properties in agricultural soils of Isfahan province
Parisa MASHAYEKHI, *
Iranian Journal of Soil and Water Research, -
Evaluation of several digestion methods in the extraction of heavy elements from different organic sources
*, Hosein Sharifi
Environmental Sciences,