Forests influence the quality of air, soil and water resources in following ways:
(i) Influence of forests on air occurs in these ways:
(a) Forests help to maintain oxygen and carbon dioxide balance in the air. They reduce the level of CO2 in the air and to prevent greenhouse effect.
(b) These maintain temperature of the environment.
(c) Forests increase the rate of photosynthesis in surrounding region.
(ii) Influence of forests in quality of soil:
(a) Trees spread their roots deep inside the Earth and bind the soil particles firmly. This reduces soil erosion.
(b) Forests help to maintain nutrient cycles (biogeochemical cycles) in the atmosphere.
(iii) Influence of forests in quality of water:
(a) Trees help to maintain water cycle.
(b) Forests conserve water and make them available on the surface of Earth as water sources.
