加强环境监测和评估:使用小农农业系统的参数指数评估土壤质量变化
Safirat Sani1, Sani Abubakar Mashi2, Clement Didi Chup1
1Department of Geography, Faculty of Geographical and Atmospheric Sciences, University of Abuja, PMB 117, Abuja, Nigeria.
Environmental monitoring and assessment
|June 14, 2025
概括
一个新的参数土壤质量指数 (PSQI) 显示,与自然森林相比,在各种作物系统下,土壤的退化显著. 混合作物系统更好地保护土壤营养素,为可持续农业提供了洞察力.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 农业科学 农业科学
背景情况:
- 传统的土壤质量评估 (SQE) 经常使用复合指数,掩盖了土壤个体性质的关键变化,并阻碍了对土壤退化的详细理解.
- 有效的土壤管理需要参数特定的见解来解决退化和指导有针对性的改进.
研究的目的:
- 引入和应用一种新的参数土壤质量指数 (PSQI),用于评估各种作物系统对土壤个体性质的影响.
- 量化土壤性质的百分比变化,并为小农农业系统的特定场地干预提供信息.
- 评估六种土地使用类型的土壤退化情况,包括单一种植,混合种植和自然森林控制.
主要方法:
- 从尼日利亚阿布贾的六种土地使用类型收集了576个复合土壤样本.
- 使用t测试,单向ANOVA,百分比等效和百分比变化对土壤化学性质的分析.
- 根据土壤深度和作物系统的土壤特性变化相对于自然森林控制的比较.
主要成果:
- 与自然森林相比,在作物系统下观察到的土壤质量显著降低,在某些系统 (芝麻,几内亚玉米) 中,土壤有机碳和总气减少了50%以上.
- 混合作物 ( + 玉米) 显示出更好的营养保留 (,阴离子交换能力).
- 密集的作物和残留物去除导致可用的,可交换的离子和和度的下降,PSQI有效量化.
结论:
- PSQI提供了一个精确的工具来评估土壤退化,并指导特定地点的干预措施.
- 建议采用可持续实践,如集成的土壤肥力管理,有机修改,混合作物,精准农业和农林业,以保持土壤生产力.
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