Effects of land use and slope position on selected soil physicochemical properties in Tekorsh Sub-Watershed, East Gojjam Zone, Ethiopia

IF 1.8 Q2 AGRICULTURE, MULTIDISCIPLINARY Open Agriculture Pub Date : 2023-01-01 DOI:10.1515/opag-2022-0147
Dilnesa Bayle, Samuel Feyissa, Solomon Tamiru
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Abstract

Abstract In the Tekorsh Sub-Watershed, East Gojjam Zone, Ethiopia, researchers investigated the impact of land use patterns and slope position on selected soil physico-chemical parameters. The study area was arbitrarily divided into three slope positions (higher, middle, and lower), two land uses types (grazing and cultivated land), and two soil depths (0–20 and 20–40 cm) with three replications, based on the in situ field survey. For laboratory analysis, a total of 36 composite samples were obtained. Sand, clay, and silt fraction were highly significantly ( P ≤ 0.05) affected by the interaction effect of the three factors. Clay and clay loam were the textural classes of the soil in the study area. The interaction effects of the three factors were highly significant ( P ≤ 0.001) affected bulk density ( D b) , total porosity (TP), organic carbon (OC), available phosphorus (AP), exchangeable (Mg 2+ , Ca 2+ , and acidity), cation exchange capacity (CEC), and micronutrients (Fe, Mn, Cu, and Zn). The soils were medium to high (1.22–1.44 g/cm 3 ) in D b , very high (45.66–63.13%) in TP, medium to high (15.72–19.56% v/v) in available water holding capacity, low to medium (1.37–2.91%) in OC, very low (1.65–7.68 mg/kg) in AP, high (4.62–5.36 cmol(+)/kg) in exchangeable Mg 2+ , very high in CEC (43.60–51.06 cmol(+)/kg), Fe (25.20–52.91 mg/kg), Mn (37.29–105.55 mg/kg), Cu (4.04–7.87 kg/kg), and Zn (0.83 2.53 kg/kg). In general, it was discovered that the majority of the assessed soil properties were better in grazing land than in soils utilized for cultivated land uses, and that the lower slope position was preferable to the upper and middle ones.
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埃塞俄比亚东Gojjam区Tekorsh小流域土地利用和坡位对土壤理化性质的影响
在埃塞俄比亚东Gojjam地区Tekorsh小流域,研究了土地利用方式和坡位对土壤理化参数的影响。在实地调查的基础上,将研究区随机划分为3个坡位(高、中、低),2种土地利用类型(放牧和耕地),2种土壤深度(0-20 cm和20-40 cm), 3个重复。实验室分析共获得36份复合样品。砂、粘土、粉粒组分受三者交互作用的影响极显著(P≤0.05)。粘土和粘壤土是研究区土壤的质地类别。3个因子的交互作用对容重(D b)、总孔隙度(TP)、有机碳(OC)、速效磷(AP)、交换性(Mg 2+、Ca 2+和酸度)、阳离子交换容量(CEC)和微量元素(Fe、Mn、Cu和Zn)均有极显著影响(P≤0.001)。土壤D - b含量中高(1.22 ~ 1.44 g/cm 3), TP含量极高(45.66 ~ 63.13%),有效持水量中高(15.72 ~ 19.56% v/v), OC含量中低(1.37 ~ 2.91%),AP含量极低(1.65 ~ 7.68 mg/kg),可交换mg 2+含量高(4.62 ~ 5.36 cmol(+)/kg), CEC (43.60 ~ 51.06 cmol(+)/kg)、Fe (25.20 ~ 52.91 mg/kg)、Mn (37.29 ~ 105.55 mg/kg)、Cu (4.04 ~ 7.87 kg/kg)、Zn (0.83 ~ 2.53 kg/kg)含量极高。总体而言,放牧土壤的大部分性质优于耕地土壤,且坡度较低的位置优于坡度较高的位置。
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来源期刊
Open Agriculture
Open Agriculture AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
3.80
自引率
4.30%
发文量
61
审稿时长
9 weeks
期刊介绍: Open Agriculture is an open access journal that publishes original articles reflecting the latest achievements on agro-ecology, soil science, plant science, horticulture, forestry, wood technology, zootechnics and veterinary medicine, entomology, aquaculture, hydrology, food science, agricultural economics, agricultural engineering, climate-based agriculture, amelioration, social sciences in agriculuture, smart farming technologies, farm management.
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