Emission of Green house gases is the main cause of climate change. Green house gases are carbon dioxide, methane, nitrous oxide, fluorinated gas, etc. These gases are produced primarily through the burning of fossil fuels (oil, natural gas, and coal), solid waste and trees and wood products but also deforestation and soil degradation add carbon dioxide  to the atmosphere and re-growth of forest can be supplemented b y conserving them. Following points describe national parks and conservation area important in Nepal as an effective strategy to reduce green house gas emission:

• Control on deforestation will achieved, which make people to rely on other means of energy such as bio gas for daily activities such as for cooking food, which automatic results reduction in GHG.
• It helps to promote of renewable energy.
• Conservation on biodiversity through national parks help to make environment healthy.
• People can travel, trek, spend time and get enjoyment based on machinery engine will not be used in vast amount and emission of automobiles reduces.
• Concept of national park and conservation area helps to develop concept and awareness about environment protection.