Discussion on Spatial Layout and Planning of Biological Fireproof Forest Belt Barrier Network at County Level in Guangdong Province
Guangdong province is a mountainous and hilly area,which has the characteristics of wide con-tact between important fire sources and forest areas,complex and diverse fire conditions.The construction of a forest fire barrier system with a biological fire prevention forest belt as the main body is one of the important means of forest fire prevention in Guangdong province.In order to effectively improve the construction quality of biological fire prevention forest belt barrier network in Guangdong province,this paper takes the construction of biological fire prevention forest belt in a county of Guangdong province as an example to explore the spatial lay-out and planning method of biological fire prevention forest belt barrier network,in order to provide ideas and guidance for the construction of biological fire prevention forest belt in various counties and districts of Guang-dong province.The firebreak system was employed as the primary metric to regulate the controlled area,with a set value of 1 000 hm2.Scientific planning for firebreak vegetation was implemented for forested areas exceeding 1 000 hm2.The concept of"flammability of dominant tree species"was introduced,and concurrently,fire-resistant economic tree species were planted in the grave mountain to effectively confine potential wildfires within a limited range.The results indicated that a final confirmation was made to establish a 185 km long firebreak,effectively reducing the controlled area of the firebreak system in all forested areas to below 1 000 hm2.The maximum controlled area was determined to be 998 hm2,with a specific focus on the flammability of tree species and their locations.Traditional burial sites were categorized based on concentration levels,and Ring-shaped for-est belt design or planar full-coverage design of firebreak vegetation using Camellia oleifera economic tree spe-cies or C.sinensis economic tree species was applied to the grave mountain.Based on an accurate understanding of the current data,the innovative concept of"flammability of dominant tree species"was introduced.The es-tablished objective of reducing the controlled area of the firebreak system in a certain county to below 1 000 hm2 was ultimately achieved.Each route exhibited both scientific and rational characteristics.The implementation of a ring-shaped forest belt design or planar full-coverage design of firebreak vegetation on grave mountain,using C.oleifera economic tree species or C.sinensis economic tree species,effectively harnessed the ecological,fire prevention,and economic benefits of the firebreak belt.The comprehensive benefits were notably outstanding.
forest fire preventionbio-fireproof forest belt barrier networkplanning layoutflammabili-ty of dominant tree speciesgrave mountain
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