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mei guo shui huan jing de zui xin zhuang kuang
Author(s): 
Pages: 21-22,41
Year: Issue:  6
Journal: EXPRESS WATER RESOURCES & HYDROPOWER INFORMATION

Keyword:  水体生态环境化学和物理特征美国;
Abstract: 美国清洁水行动计划提出了美国水体恢复的目标和标准,涉及水体的生态、化学和物理特征等方面.达到这些目标意味着水体需要维持一定标准的水质,以保护土著鱼类、贝类和野生物种种类和数量的平衡,从而保护水体的休闲娱乐价值.各州、部落和地方政府有权制定水质标准,美国环保署可以就环境健康和水生态问题提出建议.
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