The combustion characteristics of invasive alien plants in Hainan Tropical Rainforest National Park
[Objective]In order to understand the burning characteristics of invasive alien plants in Bawangling area of Hainan Tropical Rainforest National Park,and comprehensively evaluate the burning characteristics of invasive alien plants,it is expected to provide basis for the construction of the fire belt of Hainan Tropical Rainforest National Park,and provide basic data for the fire characteristics database of invasive plants in China.[Method]Taking the invasive alien plants in the Bawangling area of Hainan Tropical Rainforest National Park as the research object,the change characteristics of its flammability indicators(moisture content,equilibrium moisture content,ignition point and calorific value)were measured within one year,and the differences and relationships among the flammability indicators were analyzed,to preliminarily clarify the flammability of invasive alien plants in Hainan Tropical Rainforest National Park.[Result]1)The moisture content of invasive alien plants was between 70.00%and 90.00%;2)The changes in the equilibrium moisture content of Fabaceae were basically the same,and the equilibrium moisture content of invasive alien plants showed a large value in March;3)The burning points of Hyptis brevipes(255.75±4.98)℃ and Eupatorium odoratum(263.92±4.41)℃ were higher,and the burning points of most invasive alien plants showed smaller values in March and December,and June and September show a larger value;4)The calorific value of Scoparia dulcis(17.96±0.76)kJ/g showed a large value throughout the year,and the calorific value of invasive alien plants appeared in March and the smaller period appeared in June;5)The flammability of Melinis repens was extremely high,followed by Synedrella nodiflora and Mimosa pudica,and the lower flammability was Leucaena leucocephala,followed by Eupatorium odoratum.[Conclusion]The dry season in Hainan is the focus of fire prevention,among them,we should pay attention to the invasive alien plants such as M.repens,S.nodiflora and M.pudica,the ignition point and calorific value all show small values,and the flammability is high.Comprehensive risk assessment should also be carried out in combination with the load and other indicators of fuel.
Hainan Tropical Rainforest National ParkBawang Linginvasive alien plantscombustion characteristics
NETL
NSTL
万方数据
