Determination of the relationship among compound Topographic Index (CTI), soil properties and land-use in karst ecosystems

IF 1.1 4区地球科学 Q4 ENVIRONMENTAL SCIENCES Physical Geography Pub Date : 2021-08-04 DOI:10.1080/02723646.2021.1961361

T. Dindaroglu, V. Tunguz, E. Babur, O. Menshov, M. Battaglia

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引用次数: 7

Abstract

ABSTRACT Topography is a key factor that affects edaphic, climatic, and biotic factors directly or indirectly. Relationships between Compound Topographic Index (CTI) model and soil properties were investigated in order to determine the ecological potential of the area in order to plan the sustainability of the fertile lands and the rehabilitation of the degraded areas in the study area. Totally 84 soil samples (0–20 cm) collected from different land use types (forest, cropland, rangeland) in Karst Mountain, Andırın-Kahramanmaras, Turkey. The CTI distributions are generated from digital elevation data of 12 m resolution obtained from AlosPalsar Satellite images. Although CTI values changed to Forest> Cropland> Rangeland, the highest correlation was found between CTI and soil moisture content in rangeland (R2 = 0.81). Lower correlations were found with other land uses (R2 = 0.63 in Cropland and R2 = 0.31 in Forest). CEC and Clay content were found to have a significant (p < 0.01) positive correlation with Curvature. Despite a distinctive topographic structure of karst ecosystems, these correlations verified the influence of topography on soil properties. CTI, which has strong correlations with soil moisture content can be used in planning reclamation processes of degraded karst ecosystems.

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喀斯特生态系统复合地形指数(CTI)与土壤性质和土地利用关系的确定

摘要地形是直接或间接影响土壤、气候和生物因素的关键因素。研究了复合地形指数（CTI）模型与土壤特性之间的关系，以确定该地区的生态潜力，从而规划研究区肥沃土地的可持续性和退化地区的恢复。从土耳其Andırın-Kahramanmaras喀斯特山的不同土地利用类型（森林、农田、牧场）采集了84个土壤样本（0-20 cm）。CTI分布是从AlosParsar卫星图像中获得的12m分辨率的数字高程数据生成的。虽然CTI值变化为森林>农田>牧场，但牧场CTI与土壤水分含量的相关性最高（R2=0.81），与其他土地利用的相关性较低（农田R2=0.63，森林R2=0.31）。CEC和粘土含量与曲率呈显著正相关（p<0.01）。尽管喀斯特生态系统具有独特的地形结构，但这些相关性验证了地形对土壤性质的影响。CTI与土壤含水量具有很强的相关性，可用于规划退化岩溶生态系统的复垦过程。

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来源期刊

Physical Geography 地学-地球科学综合

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： Physical Geography disseminates significant research in the environmental sciences, including research that integrates environmental processes and human activities. It publishes original papers devoted to research in climatology, geomorphology, hydrology, biogeography, soil science, human-environment interactions, and research methods in physical geography, and welcomes original contributions on topics at the intersection of two or more of these categories.