Positive effects: By deforestation, there are more lands to build houses or industrial concrete, which provides larger spaces for the government to construct building. The bigger the land is, the cheaper the land costs. Additionally, lots of furnitures are also made of woods, emphasizing the value of forest for humans to live. Besides, papers are also produced by trees. Especially for students and office worker, they consume a considerable amount of papers, which reflects the use of forest can be various and it is vital.