| In recent years,forest park fires have occurred frequently,and countries around the world have suffered greatly.Excessive area of combustible forests and increased combustible biomass have become the primary factors for the occurrence of forest fires.Early domestic research on the combustibility of forest combustibles was limited to indoor analysis of a single tree species,and could not objectively reflect the true combustibility of natural forest types;in addition,there was a lack of systematic research on the fire protection performance and landscape pattern optimization of garden plants in parks.This paper analyzed the main characteristics and biomass and distribution of different standard land through the key investigation of the forest community types,and combined the forest coverage and other factors to carry out the fine fire risk classification of the forest park,so as to determine and optimize the Fireproof layout of Guangxi Gaofeng National Forest Park.By studying the characteristics of different tree species’ combustibility experiments(water content,water loss rate,burning time,ash content and carbon content determination,etc.)and the characteristics of biology and ecology,the gray correlation method was used to integrate the fire resistance performance of each tree species Judging,selecting 32 kinds of excellent fireproof plants for Guangxi Gaofeng National Forest Park,using plant landscape configuration,engineering layout and other measures to systematically optimize the fire risk sensitive areas of the forest park,etc.,in order to improve the comprehensive fire protection level of Guangxi Gaofeng National Forest Park,so that The park will be better and more sustainable and stable to play ecological and economic benefits.The research results are as follows:(1)The forest community types within the Guangxi Gaofeng National Forest Park are mostly artificial vegetation.Through investigation,they are divided into 5 vegetation types,namely,evergreen broad-leaved mixed forest,evergreen broad-leaved forest,and evergreen needles.Leaf forest,evergreen coniferous and broad-leaved mixed forest and economic forest;17formations,respectively,are eucalyptus and red vertebra mixed forest,eucalyptus and large leaf oak mixed forest,eucalyptus forest,red vertebral forest,masson pine forest and Chinese fir forest.By Analyzing the biomass distribution in the main forest areas of Guangxi Gaofeng National Forest Park through sample surveys,sample surveys,forest stand biomass surveys,and combustible material load surveys,we found that Guangxi Gaofeng National Forest Park was composed of flammable forests.The share was relatively large,and the combustible load was also high.(2)Analyzing the biomass distribution in the main forest areas of Guangxi Gaofeng National Forest Park through sample surveys,forest biomass surveys,and combustible load surveys,and found that Guangxi Gaofeng National Forest Park was dominated by combustible forests,and the combustible load was high.Amonged them,the biomass of tree layer was between 10.14t/hm2 ～ 149.16t/hm2,the biomass of understory vegetation was between 0.92t/hm2～3.55t/hm2,and tthe biomass of litter was between 1.47t/hm2～5.08 t/hm2.(3)Based on the forest community and standard land survey,combining with the "National Forest Fire Risk Zoning Level(LY/T1063-2008)",the vegetation types of the Gaofeng National Forest Park in Guangxi were divided into five fire risk types,such as Class I extremely hard to burn forests,Class II flame-retardant forest,Class III combustible forest,Class IV combustible forest,Class V extremely combustible forest.(4)Summarizing the previous experiments and the results of this study,the optimized tree species for fire protection gardens were selected for the Gaofeng National Forest Park in Guangxi,such as: Syzygium hainanense、Michelia macclurei、Mytilaria laosensis、Schima wallichii、Schefflera octophylla、Illicium verum、Magnolia sumatrana、Psychotria rubra、Camellia oleifera、Blechnum orientale、Allantodia virescens、Schefflera actinopylla、Passiflora papilio 、 Excoecaria cochinchinensis 、 Osmanthus fragrans 、 Schefflera microphylla、Fagraea ceilanica、Camellia japonica、Sansevieria trifasciata.(5)The optimization of fire prevention plant landscape concentrated on the transformation of forest stand structure.The flammable forest stand was optimized and gradually improved through measures such as building fire prevention landscape forest belts,mixing fire-resistant garden tree species,reducing forest stand density,and transforming understory fire prevention plants.These measures could greatly improve the fire protection pattern in Guangxi Gaofeng National Forest Park.(6)The engineering landscape optimization mainly focused on the deployment of fire protection facilities.The overall fire protection level of the forest park could strengthen through the rational construction of fire protection forest belt roads,the layout of reservoirs,interesting fire hydrants,automatic smoke detection and high-pressure sprinkler systems. |
PDF Full Text Request