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不列颠哥伦比亚省林业部调查规划科已经建立了约7000张森林覆盖图、统计记载生长信息和消耗信息等森林资源数据库,按照林业部的要求,能从数据库中提取当年最新资源数据,从这个目标出发,所以,每年需要对数据进行更新,实践证明,采用传统方法更新森林调查数据,既费时间,又费人力物力,而采用遥感技术,利用卫星图象产品以及计算机辅助制图技术,可以为更新和保护自然资源调查数据提供比较实用的方法。此外,数字化陆地模型同地理信息系统数据综合利用,对于提高经营实践效果具有重大意义。本文就是对不列颠哥伦比亚省目前所使用系统的简单回顾。
The survey and planning section of the Ministry of Forestry in British Columbia has established about 7,000 forest cover maps and has a statistical record of forest resource databases such as growth information and consumption information. Based on the request of the Ministry of Forestry, the latest resource data of the current year can be extracted from the database and from this target Therefore, the data needs to be updated every year. Practice has proved that it is time-consuming and labor-intensive to update the forest survey data using the traditional methods. Using remote sensing technology, using satellite imagery products and computer-aided cartography technology can update and Conservation of natural resources survey data provide a more practical method. In addition, the comprehensive utilization of digital terrestrial model and geographic information system data is of great significance for improving the operational effectiveness. This article is a brief review of the systems currently in use in British Columbia.