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Soil quality evaluation under different land use types in Kersa sub-watershed, eastern Ethiopia

机译:埃塞俄比亚东部地区不同土地利用类型下的土壤质量评价

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Background Soil quality, which can be inferred using indicators that interact synergistically, is affected by land use types and agricultural management practices. This study assessed the status of soil quality under three adjacent land uses (cultivated, grazing, and fallow) in Kersa subwatershed (622?ha). Soil samples were collected from the surface soil (0–20?cm depth) of the identified land uses with three replications and the soil quality parameters were analyzed. A minimum data set of soil quality indicators were selected from physical, chemical, and biological parameters using the literature review and expert opinion method. Linear scoring functions were used to give the unitless scores for the selected data sets, which were then integrated into a soil quality index (SQI). Results The results revealed that bulk density, aggregate stability, pH, cation exchange capacity (CEC), available P, and soil organic carbon (SOC) had a significant difference in SQI among the different land uses. The soil quality indices were 0.69 for grazing land, 0.62 for cultivated land, and 0.59 for the fallow land. The SQI of all the land uses falls in the intermediate soil quality (0.55?
机译:背景技术土壤质量,可以使用协同互动的指标推断,受土地利用类型和农业管理实践的影响。本研究评估了在Kersa亚海域(622?HA)中的三个邻近土地使用(栽培,放牧和休耕)下的土壤质量的地位。从已鉴定的土地使用的表面土壤(0-20〜20℃)收集土壤样品,分析了土壤质量参数。使用文献综述和专家意见方法选自物理,化学品和生物参数的最低数据集。线性评分功能用于给出所选数据集的无单位分数,然后将其整合到土壤质量指数(SQI)中。结果结果表明,批量密度,聚集稳定性,pH,阳离子交换能力(CEC),可用P和土壤有机碳(SoC)在不同的土地使用中具有显着差异。用于放牧土地的土壤质量指数为0.69,耕地为0.62,为休耕土地0.59。所有土地的SQI都在中间土壤质量下降(0.55?<?SQI?<?0.70)课程。结论几乎所有质量指标评估,放牧土地优于耕地和休耕地。因此,实施加强有机物质控制系统等土壤质量的管理实践对于研究区的可持续农业生产是必不可少的。

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