南京林业大学学报（自然科学版）2004，Vol.28Issue(5)：32-36,5.
大兴安岭樟子松林火历史及火烧对林分结构的影响
Studies on Fire History and Effects of Fire on Mongolian Scotch Pine Stand in Daxinganling Mountain,China
王琛瑞 1张金池 2史奕1
作者信息
- 1. 中国科学院沈阳应用生态研究所,辽宁,沈阳,110016
- 2. 南京林业大学,江苏,南京,210037
- 折叠
摘要
Abstract
In order to evaluate the status and role of fire in Mongolian Scotch pine(Pinus sylvestris var.mongolica) forest of Daxinganling mountain,studies were conducted in 3 sampling plots in the Mordaoga Forestry Region.We defined the years and heights(h) of fires which happened in sampling plots by a method of fire scar analysis.Fire intensity(I) is calculated by an experiential formula,and the diameter at the breast height (DBH) after each fire concludes from the materials of DBH measured in the field.Results showed that 10 fires happened in 3 sampling plots from 1887 to 1976,h ranging from 0.45～3.32m and I range from 48～3690kW/m and mean fire interval(tMFI) is about 19.8 years.Limited data on fire history and stand DBHs distributions after fires showed:high intensity fire disturbed the stand development and compelled stand to restart the regeneration and succession;medium and low intensity forest fires as a natural selection force,suppressing other trees,shrubs and weeds with low resistance against fires and accelerating soil nutrient cycling,those are in favor of survival for Mongolian Scotch pines;tMFI and I generally have an inverse relationship.Therefore,it will raise the risk of high-intensity fire occurrence to prevent fire from forest in a long term.关键词
樟子松/火疤/火强度/年轮/大兴安岭Key words
Mongolian Scotch pine/Fire scar/Fire intensity/Growth ring/Daxinganling mountain分类
农业科技引用本文复制引用
王琛瑞,张金池,史奕..大兴安岭樟子松林火历史及火烧对林分结构的影响[J].南京林业大学学报（自然科学版）,2004,28(5):32-36,5.
