经营模式对大兴安岭天然次生林地表可燃物燃烧性的影响
收稿日期: 2025-01-09
修回日期: 2025-02-10
网络出版日期: 2025-08-06
基金资助
中央财政林业科技推广示范项目“改培型防火林带阻隔系统应用技术推广与示范”(黑[2024]TG27);中央财政林业科技推广示范项目“复合型生物防火林带可燃物调控技术推广与示范”(黑[2025]TG01)
Effects of management modes on combustibility of surface fuel of natural secondary forest in the Daxing’anling Mountains,Northeast China
Received date: 2025-01-09
Revised date: 2025-02-10
Online published: 2025-08-06
张念慈 , 韩丽冬 , 张京 . 经营模式对大兴安岭天然次生林地表可燃物燃烧性的影响[J]. 林草资源研究, 2025 , 0(1) : 95 -103 . DOI: 10.13466/j.cnki.lczyyj.2025.01.011
Exploring the influence mechanism of different management modes on the combustibility of surface fuel can provide scientific basis for the sustainable management of natural secondary forest in the Daxing’anling Mountains.We studied the surface fuel(shrub,herb,litter,humus)of natural secondary coniferous-broadleaved mixed forest and broad-leaved forest under two management modes(comprehensive tending and non-interference)in the Daxing’anling Mountains,and analyzed the physicochemical properties and their interactions by drying method,ignition method,bomb method and linear regression.The results showed that:1)Under the two management modes,the water content of surface fuel of coniferous-broadleaved mixed forest and broad-leaved forest was shrub,herb,humus,litter from large to small,and the ignition point was humus,shrub,herb and litter in descending order.The water content and ignition point of different fuel components were higher in the comprehensive tending mode than in the non-interference mode,and the comprehensive tending mode increased the water content and ignition point of the surface fuel.2)The calorific value of surface fuel of coniferous-broadleaved mixed forest and broad-leaved forest under two management modes was litter,herb,shrub and humus in descending order.The calorific value of different fuel components was less in the comprehensive tending mode than in the non-interference mode,and the comprehensive tending mode reduced the calorific value of the surface fuel.3)Under the comprehensive tending mode,the ignition point of shrub and herb had a significant negative correlation with the calorific value(P<0.05),while the ignition point of litter and humus had no significant correlation with the calorific value(P>0.05).Under the non-interference mode,the ignition point of shrub and herb had no significant correlation with the calorific value(P>0.05),while the ignition point of litter and humus had a significant negative correlation with the calorific value(P<0.05).4)There was a significant positive correlation between ignition point and water content of different components of surface fuel under two management modes(P<0.05),and there was no significant correlation between calorific value and water content(P>0.05)(except herb in the non-interference mode).Compared with the non-interference mode,the comprehensive tending mode can improve the water content and ignition point of surface fuel,reduce the calorific value of surface fuel,and is conducive to reducing the combustibility of surface fuel and reducing the loss of forest resources.
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