The main type of tree used to make paper is the coniferous tree, particularly species such as spruce, pine, and fir. These trees have long, straight fibers that are ideal for producing strong and durable paper. The pulping process, where wood is transformed into pulp, commonly uses these types of trees because of their abundant supply and fast growth rates. While hardwood trees such as oak and maple are also used for specific types of paper products, conifers remain dominant in the industry due to their cost-effectiveness and the quality of fiber they produce. Sustainability practices are increasingly important in forestry to ensure a continual supply.