城市林业纵览林业在许多国家，长久以来只被看作是用来提供工业用材。直到近二三十年，这个概念才被扩展到诸如提供多种多样的林产品以及改善全球环境的领域。燃料危机、社会林业与近年来发展起来的保护生物多样性和改善全球气候等话题时常出现在各种新闻媒体上。即便如此... Urban forestry overview In many countries, forestry has long been considered only to provide industrial timber. It was not until the last two or three decades that the concept was extended to areas such as providing a wide range of forest products and improving the global environment. The fuel crisis, social forestry and the topics that have been developed in recent years to conserve biodiversity and improve the global climate often appear in various news media. Even so...