研究薪炭林的目的是:是在不消耗森林资源和不危害土壤、水源、及其他环境效益的情况下,探讨薪炭林的收获和利用。薪炭林能提高其他林木的价值,是一种有利的营林作业,并能和有益于野生动物、游憩、及水土保持等措施相结合。无论那种营林方式都可作薪炭林经营,但最好是阔叶林,因为阔叶林适宜作薪材。木材的热值很高(见表1),当使用新式密封炉时,木材能提供极好的热源空间。1考得(128立方呎层积木材)普通气干阔叶材的热值等于150加仑的燃料油,或23000立方呎天然气,或1吨煤。而且用木材取暖会使人感到舒服,还有益于健康。目前美国木材能源所占的比重还比较 The purpose of studying fuelwood forests is to explore the harvesting and utilization of fuelwood forests without consuming forest resources and without jeopardizing soil, water sources and other environmental benefits. Firewood forests can increase the value of other forest trees and are a good afforestation and can be combined with measures that benefit wildlife, recreation and water and soil conservation. Regardless of the type of forest management can be used for fuelwood forest management, but the best is broad-leaved forest, because broad-leaved forest suitable for fuelwood. The high calorific value of wood (see Table 1) provides excellent heat source space when using a new hermetically sealed oven. 1 Cumulative (128 cubic foot strata) Common air-dry hardwood leaves have a calorific value equal to 150 gallons of fuel oil, or 23,000 cubic feet of natural gas, or 1 tonne of coal. And heating with wood will make people feel comfortable, but also good for health. At present, the proportion of the United States wood energy is still relatively