Characterization and Classification of Soils of Zamra Irrigation Scheme, Northeastern Ethiopia

IF 3.5 Q2 ENVIRONMENTAL SCIENCES

Air Soil and Water Research Pub Date : 2021-01-01 DOI:10.1177/11786221211026577

W. Sebnie, E. Adgo, H. Kendie

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引用次数: 5

Abstract

Understanding soil types of a given area is an important prerequisite to design optimum management strategies such as irrigation water management. The study was thus conducted on characterization and classification of Zamra irrigation scheme in Abergelle district of Amhara Region, which has an area of 196.16 ha. For this study, 53 auger observations, four profile pits, extensive visual observations, reconnaissance survey, and descriptions of soil profiles and laboratory analysis were used to study the morphological and physicochemical properties of the soils of the scheme. Twelve disturbed and undisturbed soil samples were collected from all profiles of each genetic horizon for laboratory analysis. The soils of the study area were identified based on Food and Agricultural Organization of the United Nations/World Reference Base for Soil Resources (FAO/WRB) 2015. The results revealed that the textural classes of all profiles of the study site ranged from sandy clay loam to sandy loam. The chemical properties of the soil in terms of total nitrogen, organic matter, and available phosphorus were in the very low and low categories as per the criteria developed by Tekalign and Olsen, respectively, whereas exchangeable bases (Ca, Mg, K, and Na), cation exchange capacity, and extractable micronutrients (Fe, Mn, Zn, and Cu) were medium to high. Based on morphological, physical, and chemical analyses, the soils were classified as Leptic Regosols (Eutric, Loamic; 21.99% of the area), Vertic Cambisols (Hypereutric; 17.87%), Haplic Regosols (Eutric; 36.69%), and Rhodic Nitisols (Eutric; 23.44%). Therefore, management techniques that enhance soil fertility (including crop rotations, manuring, fallow periods, proper management of crop residues, and leguminous cover crops) and water-saving technologies suitable to the terrain of the area are the best options to enhance land productivity in the area.

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埃塞俄比亚东北部Zamra灌溉方案土壤的特征和分类

了解特定地区的土壤类型是设计最佳管理策略(如灌溉用水管理)的重要前提。因此，本研究对阿姆哈拉地区面积为196.16 ha的Abergelle区Zamra灌溉方案的特征和分类进行了研究。通过53个螺旋钻观测、4个剖面坑、广泛的目视观测、勘察调查、土壤剖面描述和实验室分析，研究了该方案土壤的形态和物理化学性质。从每个遗传层的所有剖面中收集了12个受干扰和未受干扰的土壤样品进行实验室分析。研究区土壤类型根据联合国粮农组织/世界土壤资源参考基地(FAO/WRB) 2015年数据进行识别。结果表明，研究地点各剖面的质地类别均为砂质粘土壤土至砂质壤土。根据Tekalign和Olsen制定的标准，土壤的化学性质在全氮、有机质和速效磷方面分别处于非常低和低的类别，而交换碱(Ca、Mg、K和Na)、阳离子交换容量和可提取微量营养素(Fe、Mn、Zn和Cu)则处于中等至高的类别。基于形态、物理和化学分析，将其划分为富营养化土壤;21.99%的面积)，垂直Cambisols (Hypereutric;17.87%)， Haplic Regosols (Eutric;36.69%)， Rhodic Nitisols (Eutric;23.44%)。因此，提高土壤肥力的管理技术(包括轮作、施肥、休耕期、适当管理作物残茬和豆科覆盖作物)和适合该地区地形的节水技术是提高该地区土地生产力的最佳选择。

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来源期刊

Air Soil and Water Research ENVIRONMENTAL SCIENCES-

CiteScore

7.80

自引率

5.30%

发文量

审稿时长

8 weeks

期刊介绍： Air, Soil & Water Research is an open access, peer reviewed international journal covering all areas of research into soil, air and water. The journal looks at each aspect individually, as well as how they interact, with each other and different components of the environment. This includes properties (including physical, chemical, biochemical and biological), analysis, microbiology, chemicals and pollution, consequences for plants and crops, soil hydrology, changes and consequences of change, social issues, and more. The journal welcomes readerships from all fields, but hopes to be particularly profitable to analytical and water chemists and geologists as well as chemical, environmental, petrochemical, water treatment, geophysics and geological engineers. The journal has a multi-disciplinary approach and includes research, results, theory, models, analysis, applications and reviews. Work in lab or field is applicable. Of particular interest are manuscripts relating to environmental concerns. Other possible topics include, but are not limited to: Properties and analysis covering all areas of research into soil, air and water individually as well as how they interact with each other and different components of the environment Soil hydrology and microbiology Changes and consequences of environmental change, chemicals and pollution.