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). 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 < SQI < 0.70) class. In almost all the quality indicators assessed, the grazing land was superior to the cultivated and fallow lands. Therefore, implementing management practices that enhance soil quality like organic matter-controlled systems is imperative for sustainable agricultural production in the study area.

中文翻译：

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埃塞俄比亚东部克尔萨亚小流域不同土地利用类型下的土壤质量评价

可以通过协同作用的指标推断出土壤质量，这会受到土地利用类型和农业管理实践的影响。这项研究评估了Kersa小流域（622公顷）的三个相邻土地利用（耕种，放牧和休耕）下的土壤质量状况。从确定的土地用途的表层土壤（深度0-20厘米）收集土壤样品，进行三次重复，然后分析土壤质量参数。使用文献综述和专家意见方法，从物理，化学和生物学参数中选择了土壤质量指标的最低数据集。线性评分功能用于为所选数据集提供无单位评分，然后将其整合到土壤质量指数（SQI）中。结果表明，堆积密度，集料稳定性，pH，在不同土地利用方式下，阳离子交换容量（CEC），有效磷和土壤有机碳（SOC）的SQI差异显着。放牧地的土壤质量指数为0.69，耕地的土壤质量指数为0.62，休耕地的土壤质量指数为0.59。所有土地利用的SQI属于中等土壤质量等级（0.55 <SQI <0.70）。在几乎所有评估的质量指标中，放牧地均优于耕地和休闲地。因此，实施研究措施来提高土壤质量，如有机物控制系统，对于研究区域的可持续农业生产至关重要。59休耕地。所有土地利用的SQI属于中等土壤质量等级（0.55 <SQI <0.70）。在几乎所有评估的质量指标中，放牧地均优于耕地和休闲地。因此，实施研究措施来提高土壤质量，如有机物控制系统，对于研究区域的可持续农业生产至关重要。59休耕地。所有土地利用的SQI属于中等土壤质量等级（0.55 <SQI <0.70）。在几乎所有评估的质量指标中，放牧地均优于耕地和休闲地。因此，实施研究措施来提高土壤质量，如有机物控制系统，对于研究区域的可持续农业生产至关重要。