Forests help reduce the impact of flooding by delaying and reducing the size of floods, dispersing the water in a more gradual manner than over bare ground.
Out of this has emerged much practical experience. Climate change can have some major effects on the growth and health on newly planted trees.
Together these may lead to desertification and the loss of topsoil ; without soil, forests cannot grow until the long process of soil creation has been completed - if erosion allows this.
Forests to attract rain[ edit ] Several new studies suggest that forests attract rain and this may explain why drought is occurring more frequently in parts of the world such as western Africa.
For example, in arid zones, once forest cover is destroyed, the land may become dry and inhospitable for the growth of new trees. This has helped provide wood to be used for charcoal, poles, mining timber, paper pulp, and other commercial applications.
Bythe amount of planted forest in China covered 79m hectares.