Planting forests to forest areas or mountain areas upstream so that the tree is a natural water retention on the ground and underground, and then unleash comes out continuously throughout the year.
Especially afforestation, reforestation, watershed area. Or in mountain areas The tree is a natural catchment. Both surface and underground Then released continuously throughout the year.
Reforestation, especially forest watershed area, or in the mountain areas. To make the tree is the natural water retention, both above and below ground, and released continuously throughout the year.