论文部分内容阅读
1 保护水资源的必要性水资源是指一切可用于生产和生活的自然降水、地表水及地下水,是生态系统的一部分,直接或间接影响生态环境,与人类的生存和发展关系极大,直接影响和制约着社会和经济发展。近几年,我国水资源危机日趋严重。其原因有两方面,一是自然原因。我国降雨不平衡,水资源分布不均,年内分配集中,年际变化大,连丰、连枯年份几率大,河流泥沙严重,造成我国
1 The need to protect water resources Water resources refer to all natural precipitation, surface water and groundwater that can be used for production and livelihood, and are part of the ecosystem. They directly or indirectly affect the ecological environment and are directly related to the survival and development of mankind. Directly Affect and constrain social and economic development. In recent years, China’s water crisis is worsening. There are two reasons, one is natural. China’s rainfall is unbalanced, its water resources are unevenly distributed, its distribution is concentrated during the year, the interannual variation is large, and Lianfeng even has a high probability of drying up years.