环境特性环境特性原则上是由在闭架区里图书保管的要求来决定的。关于文件收藏的未来英国标准,对规定这些要求方面是会有帮助的。一般说来,图书的保管,如果具有或者干燥或者污染的空气、高温、潮湿、通风差或者暴露于紫外线的情况的话,那将是不能令人满意的。这些要求又要求提供很好的绝缘围墙、空气调节和自动过滤设备以及给照明加上紫外线过滤器。当然,这些标准也将会保障在书库里工作的一些人员的环境稳定(对开架区,请见以上所述)。下一个问题是确保在书架间有足够的空 Environmental characteristics Environmental characteristics are, in principle, dictated by the requirements for keeping books in the enclosed area. The British Standard on the future of document collections would be helpful in laying down these requirements. In general, it would be unsatisfactory for books to be kept if they have either dry or contaminated air, heat, humidity, poor ventilation or exposure to UV light. These requirements, in turn, require the provision of well-insulated walls, air-conditioning and automatic filtration equipment and the addition of UV filters to the lighting. Of course, these standards will also guarantee the environmental stability of some of the people who work in the book stacks (for decking, see above). The next question is to make sure there is enough space in the shelves