Using soil properties map in the production of detailed soil maps

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Osat M.; HEIDARI A.; SALAMI A.

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Journal Paper

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Journal: Journal of Water and Soil Conservation Year:2021 | Volume:28 | Issue:1 Page(s): 109-127

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Title

Using soil properties map in the production of detailed soil maps

Author(s)

Osat M. | HEIDARI A. | SALAMI A. | Issue Writer Certificate

Keywords

Geomorphology

Geostatistics

Soil Map

Abstract

Background and Objectives: Detailed Soil Maps are an essential tool for achieving sustainable management. Despite advances in digital Soil Mapping and efforts to produce accurate maps, insufficient reliability of Soil Maps on many scales remains. Recent studies have focused primarily on remote sensing, which takes into account the characteristics of the subsurface of the soil. This study used a new interpolation method between subsurface characteristics and soil diagnostic properties to increase the accuracy of the prepared maps. In this study, the production of Soil Maps with two approaches including use of geomorphic surfaces as well as the interpolation of subsurface characteristics of the soil in the Chalous region were examined. Materials and Methods: The study area with an area of 100 hectares in Bandar village is one of the functions of Kelardasht section of Chalous city in Mazandaran province. The thickness or depth of the upper / lower boundary of characteristic horizons or characteristic soil characteristics was used as a criterion for distinguishing Soil Map units. According to the Comprehensive American Soil Classification System, there are six influential characteristics in the division of regional soils at the family level (Upper Combine horizon boundary, argillic horizon upper boundary, calcic horizon upper boundary, Malic horizon thickness, limestone or limestone thickness or the numerical interpolation of these features was used to generate thematic maps. The final Soil Map of the region was obtained by combining these six thematic maps. After mapping each of the soil properties separately, all the prepared maps were crossed and a map of homogeneous units was obtained. In order to study and describe the spatial structure of the variables, a semivariogram was used. The existence of data trend and heterogeneity was also examined. After preparing the change curves, the selection of the best models was done using cross-validation method and RMSS index. Results: In order to prepare the Soil Map using the geomorphic surface method, out of 20 soil units identified, 12 soil units were of the same type and 8 units were of the community type. However, all 20 map units obtained by interpolation of subsurface features were of the same type. This method had high accuracy in drawing the boundary between soil units. The main differences between this method and traditional methods are in the production of detailed Soil Maps, the use of supervised automatic interpolation instead of manual interpolation, and the use of a set of quantitative indicators. Conclusion: One of the major advantages of this method is the use of internal characteristics of the soil as an auxiliary variable along with other climatic factors, topography, living organisms, parent material and time. This study underscored the importance of the role of factor s in the SCORPAN model and showed that the internal properties of the soil, which are directly involved in soil classification, can be effectively used to separate soil units.

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APA: Copy

Osat, M., HEIDARI, A., & SALAMI, A.. (2021). Using soil properties map in the production of detailed soil maps. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 28(1 ), 109-127. SID. https://sid.ir/paper/956379/en

Vancouver: Copy

Osat M., HEIDARI A., SALAMI A.. Using soil properties map in the production of detailed soil maps. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2021;28(1 ):109-127. Available from: https://sid.ir/paper/956379/en

IEEE: Copy

M. Osat, A. HEIDARI, and A. SALAMI, “Using soil properties map in the production of detailed soil maps,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 28, no. 1 , pp. 109–127, 2021, [Online]. Available: https://sid.ir/paper/956379/en

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