一个优化的灌水质量指数,用于评估农业流域的地表水可持续性状况
Wendyam Arsene Flavien Damiba1, John Mwangi Gathenya2, James Messo Raude2
1Civil Engineering Department, Environment, and Arid and Semi-Arid Lands (ASAL), Pan African University-Institute for Basic Sciences Technology and Innovation (PAUSTI), Jomo Kenyatta University of Agriculture and Technology (JKUAT), Nairobi, Kenya.
概括
这项研究使用灌水质指数 (IWQI) 评估了卡基亚-埃萨姆布尔布尔流域的灌水质量. 结果显示,50%的地点拥有出色的水质,为可持续的农业实践提供了信息.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 农业科学 农业科学
背景情况:
- 保持高水质对于农业生产率和可持续的水资源管理至关重要.
- 灌水质量直接影响土壤的盐度,盐度和植物健康.
- 卡基亚-埃萨姆布尔布尔流域的灌可持续性需要进行深入评估.
研究的目的:
- 评估卡基亚-埃萨姆布尔布尔流域的灌水可持续性.
- 开发和应用灌水质量指数 (IWQI),使用物理和化学分析.
- 确定关键的水质指标,评估水地化学影响.
主要方法:
- 水样的物理和化学分析.
- 开发灌水质量指数 (IWQI),包括19个指标和主要组件分析 (PCA).
- 对水参数进行定性分析,包括EC,SAR,RSBC,PI,SSP,Na (%),RSC,KI和MH.
主要成果:
- SO4.Cl-Na被确定为主要的污染物.
- 50%的水样被评为"优秀"用于灌,基于IWQI值在14.48至433.76.6之间.
- PCA确定了八个关键指标:Na+,EC,TDS,HCO3-,SAR,RSC,RSBC和KI,并指出了重要的地质和人为影响.
结论:
- 开发的IWQI,利用独特的质量评级表 (Qi) 和权重公式,提供了一种对灌水适用性的创新评估.
- 虽然50%的地点显示出良好的水质,但确定的污染物和水地化学压力需要有针对性的管理策略.
- 调查结果支持制定有关该地区可持续农业生产率和水资源管理的明智政策.
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