The Combustibility Research On The Common Tree Species Of Zhejiang Province

Fire-resistant forest belts has already become the important measure in forest fire prevention and control. The selection of fire-resistance tree species is the foundation of Fire-resistant forest belts construction。However, the present selection mostly depended on experience and simple sieving in Zhejiang Province. It is good to take advantage of Cone Calorimeter to get over the weakness, which is good at evaluating material combustibility. This research took integration testing and evaluation of the fire prevention function of 80 common species in Zhejiang Province by using Cone Calorimeter; studied different radiation intensity of Cone Calorimeters and diversity of different treatments on leaves; The research also compared the difference of 10 kinds of non-flammable species'combustibility. Through the research and analysis, get the conclusion as follows:1 Researched on different radiant intensity of Cone Calorimeter and the cure of different species blades with Schima superba. It shows that the effectiveness of radiant intensity at 40KW/m2 with size of blades at 0.5cm and whole leaves have significant deviation with others.2 Analysed the fire-resistance ablity of 80 species based on the factor analysis and cluster analysis. It shows that 5 species including Manglietia fordiana, Ligustrum lucidum, Viburnum odoratissimum var. awabuk, C. camphora , Pittosporum tobira, etc are first-class fire-resistant species; 27 species including Elaeocarpaus glabripetalus, E. hebeclados, C. eyrei, L. chinense var. rubrum, Aucuba japonica cv. Variegata, etc are second-class fire-resistant species.3 Analyzed abilities of releasing harmful gas of different species,it got that 2 arbor species as well as 10 bush species are weak on this ability,such as Ligustrum lucidum,Taxus wallichiana var. mairei,Aucuba japonica cv. Variegata, E. hebeclados, M. figo, C. sinensis, Pittosporum tobira, etc, These species have smaller harmfulness to fire relatively, This conclusion can be the main reference of selecting fire-resistance tree species in different protection objects.4 Researched Integration testing on 10 optimized species'litters. The result shows the fallen leaves of Pittosporum tobira, Aucuba japonica cv. Variegate, C. sinensis , etc. have good fire-resistance performance as they hardly burnable,and are better than I. chinensis. Twig's of D. racemosum, C. eyrei has good fire-resistance performance while Aucuba japonica cv. variegata is weakness relatively. Several species with good fire-resistance performance have been sieved by this research,it will serve the construction of fire-resistant forest belts in Zhejiang Province and improve the fire prevention effet.