主题:水资源管理
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定义: 合理利用和保护水资源,确保可持续供应
主要问题: 水污染、水资源短缺、过度使用
影响: 饮用水安全问题、生态系统破坏、农业受限
应对措施: 提高水资源利用效率、加强污水处理、实施雨水收集
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