论文部分内容阅读
本文研究了宁南山区主要树草种的热值和优良薪炭种的选择。结果表明:33个树种的平均热值为4485卡/克,最高为油松;5个草种的平均热值为4276卡/克,最高为黄花蒿;从热值来看,松科的最高,柽柳科的最低;针叶树大于阔叶树;乔木大于灌木;木本植物大于草本。树木的热值随年龄而变化。同时,还选出了适于该区发展的沙棘、刺槐、柠条等优良蒋炭灌木树种。
This paper studied the calorific value of the main tree species and the choice of good firewood species in the mountains of southern Ningxia. The results showed that the average calorific value of 33 tree species was 4485 calories per gram and the highest was Pinus tabulaeformis. The average calorific value of 5 grass species was 4276 calories per gram and the highest was Artemisia annua L. From the caloric value, , Tamariscina the lowest; conifers more than broadleaf trees; trees larger than shrubs; woody plants more than herbs. The calorific value of trees varies with age. At the same time, also selected suitable for the development of the area of seabuckthorn, black locust, Caragana and other fine charcoal shrub species.