Document Type : پژوهشی

Authors

1 Ph.D Student, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran

2 .Associate Professor, Department of Physical Geography, Faculty of Earth Sciences, Shahid Beheshti University

3 Assistant Professor, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran

4 Professor, Faculty of Physical Geography Faculty of Earth Sciences Shahid Beheshti University (SBU)

10.22034/hyd.2024.61810.1741

Abstract

Dolines as karst landforms play an important role in soil formation. In this study, the morphometry of dolines and their relationship with the physicochemical characteristics of soil in Noakoh Anticline in Kermanshah province were evaluated. Chemical and physical characteristics of 36 soil samples of dolines were collected and measured in the laboratory. Also, digital elevation model (DEM; 13 cm) obtaining from UAV images, was used to measure the morphometric parameters of dolines. Pearson’s correlation and T-tests were performed on data using SPSS software. Results showed that large dolines have higher slope, depth and roundness, as well as sandy soils, and higher EC, pH, potassium, phosphorus, water holding capacity and soil organic carbon. Also, low- elevation dolines have higher values of area, slope, depth, roundness, and host soils wih higher EC, PH, potassium, water holding capacity, organic carbon, and saturation percentage than high elevation dolines. The dolines located in the plunge of the anticline have higher values of area, slope, depth, roundness and cntain soils with higher values of clay%, EC, PH, potassium, water holding capacity, organic carbon and saturation percentage than the dolines in the central part. The mean of the most morphometric parameters and physicochemical characteristics of the soil in steeper-slope dolines is higher than in low-slope dolines. Therefore, the morphometric and pedological differences of dolines show that their formation and evolution are more at lower altitudes, plunged areas and steeper slopes. In general, vegetation, elevation, slope and type of precipitation play an important role in morphometric differences and soils in dolines.

Keywords

Main Subjects

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