共查询到20条相似文献,搜索用时 0 毫秒
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David L. Rosgen 《Journal of the American Water Resources Association》2008,44(3):782-792
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Amod S. Dhakal Roy C. Sidle 《Journal of the American Water Resources Association》2008,44(4):1055-1061
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Kenneth W. Potter 《Journal of the American Water Resources Association》2009,45(6):1533-1535
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Luke J.H. Hunt Julie Fair Maxwell Odland 《Journal of the American Water Resources Association》2020,56(1):180-181
In the Discussion, Nash et al. (2019) estimate the seasonal change in groundwater volume for a portion of the restored Sierra Nevada Meadow that we evaluated (Hunt et al. 2018) and use this estimate as an upper bound on the possible contribution to flow that is attributable to restoration. The authors conclude that raising the channel bed elevation and reconnecting the meadow floodplain most likely reduced summer streamflow. In contrast, we report at least a fivefold increase in baseflow from the meadow in the years following restoration. In addition, we observed that, after restoration, the previously intermittent stream below the meadow flowed continuously throughout the summer months, despite record drought conditions, and in 2015, the lowest snowpack on record. We suggest that the groundwater budget presented in the Discussion may not adequately represent conditions within the meadow because the authors extrapolate from 5 near‐channel groundwater wells across 62 ha of meadow and assume an area of influence that is approximately one‐sixth of the meadow area. We conclude that the conversion of an intermittent stream to perennial flow during drought conditions is a stronger check on our gauge data than the groundwater budget presented in the Discussion. 相似文献
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水体富营养化问题评述 总被引:28,自引:2,他引:28
磷是水体富营养化问题产生的一个重要的原因。本文对磷污染产生的原因进行了调查 ,分析了各种污染的相对重要性 ,在此基础上对富营养化问题的预防和治理措施进行了综合分析和论述 ,指出解决富营养化问题应坚持预防为主 ,防治结合的原则。 相似文献
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对截流式合流制排水体制的探讨 总被引:1,自引:0,他引:1
以瑞安市为例,对老城区普遍采用的截流式合流制排水体制的优劣做了具体的分析,并结合污水管线设计、建设、管理中存在的问题进行了探讨。 相似文献
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行动导向教学法探讨 总被引:3,自引:0,他引:3
刘冬梅 《中国环境管理干部学院学报》2010,20(6):86-88
行动导向教学法是近年来流行于我国教育领域的一种新教法,它以建构主义为理论基础,回答了什么是知识、如何看待学习者、如何看待学习过程等教育领域中十分重要的基础性问题,对指导各类学校的课程体系、教学方式等方面的改革都有着积极的意义。着眼于教法理论与教学实践的结合,从教学观念、教学流程、教学组织形式以及基本教学方法等四个方面,对行动导向教学法进行了比较全面的论述。 相似文献