一棵树,是一个小型水库。要发展农牧业生产。就必须涵养水源,减少和节制地面水的径流,防止土壤被侵蚀和水土流失。而森林有着很强的蓄水能力。据研究,每亩林地比无林地可多蓄水20立方米。目前我国有森林面积近20亿亩,这就相当于300多个容量为1亿立方米的大型水库。 A tree is a small reservoir. To develop agricultural and animal husbandry production. It is necessary to conserve water resources, reduce and control the runoff of surface water, and prevent soil erosion and soil erosion. The forest has a strong water storage capacity. According to research, more than 20 cubic meters of water can be stored in each mu of forest land than in non-forest land. At present, China has nearly 2 billion acres of forest, which is equivalent to more than 300 large-scale reservoirs with a capacity of 100 million cubic meters.