摘要
【目的】了解海南热带雨林国家公园霸王岭片区内外来入侵植物的燃烧特性,综合评价入侵植物的燃烧特性,以期为海南热带雨林国家公园防火带的构建提供理论依据,为我国外来入侵植物着火特性数据库提供基础数据。【方法】以海南热带雨林国家公园霸王岭片区内外来入侵植物为研究对象,测定其1年内可燃性指标(含水率、平衡含水率、燃点和热值)的变化特性,分析可燃性指标间的差异及关系,初步阐明海南热带雨林国家公园外来入侵植物的可燃性。【结果】1)外来入侵植物的含水率为70.00%~90.00%;2)豆科植物平衡含水率的变化表现基本一致,外来入侵植物的平衡含水率在3月中表现出较大值;3)短柄吊球草(255.75±4.98)℃和飞机草(263.92±4.41)℃的燃点较大,多数外来入侵植物的燃点在3月份和12月份表现出较小值,6月和9月表现出较大值;4)野甘草(17.96±0.76)k J/g的热值在全年中表现出较大值,外来入侵植物的热值较大时期出现在3月,较小的时期出现在6月;5)红毛草的易燃性极高,其次是金腰箭和含羞草,易燃性较低的是银合欢和飞机草。【结论】在海南的干旱季节是防火的重点,其中要注意红毛草、金腰箭和含羞草等外来入侵植物,燃点、热值均表现出较小值,易燃性较高。
【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 poi
作者
苟志辉
王鑫
钟圣赟
曾亚红
卢国鹏
GOU Zhihui;WANG Xin;ZHONG Shengyun;ZENG Yahong;LU Guopeng(Hainan Academy of Forestry(Hainan Academy of Mangrove),Haikou 571100,Hainan,China)
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2024年第1期67-78,88,共13页
Journal of Central South University of Forestry & Technology
基金
海南省省属科研院所技术创新项目(SQKY2022-0003,KYYS-2021-04)。
关键词
海南热带雨林国家公园
霸王岭
外来入侵植物
燃烧特性
Hainan Tropical Rainforest National Park
Bawang Ling
invasive alien plants
combustion characteristics
