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首页> 外文期刊>Journal of the American Water Resources Association >WATER QUALITY IMPROVEMENT PROGRAM EFFECTIVENESS FOR CARBONATE AQUIFERS IN GRAZED LAND WATERSHEDS
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WATER QUALITY IMPROVEMENT PROGRAM EFFECTIVENESS FOR CARBONATE AQUIFERS IN GRAZED LAND WATERSHEDS

机译：耕地流域碳酸盐含水层水质改善计划的效率

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摘要

Water quality indicators of two agriculturally impacted karst areas in southeastern West Virginia were studied to determine the water quality effects of grazing agriculture and water quality trends following initiation of water quality improvement programs. Both areas are tributaries of the Greenbrier River and received funding for best management practices under the President's Initiative for Water Quality and then under the Environmental Quality Incentives Program (EQIP). After 11 years of study there was little evidence to suggest that water quality improved in one area. Three and a half years of study in the other area showed little evidence of consistent water quality improvement under EQIP. Lack of consistent water quality improvement at the catchment scale does not imply that the voluntary programs were failures. Increased livestock numbers as a result of successful changes in forage management practices may have overridden water quality improvements achieved through best management practices. Practices that target well defined contributing areas significantly impacting aquifer water quality might be one way to improve water quality at catchment scales in karst basins. For example, a significant decrease in fecal coliform concentrations was observed in subterranean drainage from one targeted sinkhole after dairy cattle were permanently excluded from the sinkhole.
机译：对西弗吉尼亚州东南部两个受农业影响的喀斯特地区的水质指标进行了研究，以确定放牧农业对水质的影响以及启动水质改善计划后的水质趋势。这两个地区都是格林布里尔河的支流，并根据总统的水质倡议和环境质量激励计划（EQIP）获得了最佳管理实践的资金。经过11年的研究，几乎没有证据表明某一地区的水质有所改善。在其他地区进行的三年半研究表明，在EQIP下水质持续改善的证据很少。流域规模水质的持续改善不足并不意味着自愿性计划是失败的。由于成功改变了饲草管理方式而导致的牲畜数量增加，可能超越了通过最佳管理方式实现的水质改善。针对定义明确的，对含水层水质有重大影响的贡献区域的做法，可能是在喀斯特盆地集水规模上改善水质的一种方法。例如，在将奶牛永久从污水坑中排除后，从一个目标污水坑的地下排水中观察到粪便大肠菌群浓度显着下降。

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