我国是世界上拥有水库数量最多的国家,共有大中小型水库8.6万座。这众多的水库调节着河川径流,在防洪抗旱,满足生产生活用水,发展航运、养鱼及旅游事业等方面,发挥着巨大作用。然而,你可知道,这些水库给周围自然环境带来多么大的影响吗? 我们首先看看水库对水文和环境生态方面的影响。由于水库的蓄洪、滞洪作用,可使库区周围和上游区域形成良好的生态系统,林木茂盛、作物增产的效果是不言而喻的。可是水 China is the country with the largest number of reservoirs in the world, with a total of 86,000 large, medium and small reservoirs. These large reservoirs regulate river runoff and play a significant role in flood control and drought relief, water supply for production and domestic use, development of shipping, fish farming and tourism. However, do you know how much impact these reservoirs have on the surrounding natural environment? Let us first look at the hydrological and environmental impacts of the reservoir. Due to the flood storage and detention of the reservoir, a good ecosystem can be formed around the reservoir area and in the upstream area. The forest is lush and the effect of crop yield increase is self-evident. But water