重度火烧对兴安落叶松-白桦林自然更新的影响  

Effect of Severe Burning on Natural Regeneration of Larixgmelinii-Butula platyphylla Plantation

作　　者：刘学爽 李慧仁 胡林林 韦昌雷 王立中 Liu Xueshuang;Li Huiren;Hu Linlin;Wei Changlei;Wang Lizhong(Forest Group Company of Agroforestry Sciences Academy of Daxing’anling,Daxing’anling 165000,China;Heilongjiang Nenjiangyuan National Forest Ecosystem Research Station Located Observation ,Daxing’anling 165000,China)

机构地区：[1]大兴安岭林业集团公司农业林业科学研究院,黑龙江嫩江源森林生态系统国家定位观测研究站,黑龙江大兴安岭165000

出　　处：《防护林科技》2018年第1期14-15,75,共3页Protection Forest Science and Technology

基　　金：国家林业局林业科技创新平台运行补助项目(2017-LYPT-DW-109)

摘　　要：通过对大兴安岭重度火烧后的兴安落叶松-白桦林自然更新情况进行的调查,结果表明:兴安落叶松-白桦林重度火烧后,未被烧除的兴安落叶松能正常产生种子。火烧后3年,兴安落叶松自然更新数量为560株hm^(-2);火烧后6年,自然更新数量为1 533株hm^(-2);火烧后10年为2 300株hm^(-2)。重度火烧区内,白桦几乎被烧光,白桦幼苗全部为萌生,3年、6年及10年其数量分别为750、2 560和6 530株hm^(-2)。火烧迹地自然更新幼苗中,兴安落叶松幼苗比例逐年降低,白桦幼苗比例不断增大,白桦表现出先锋树种更新能力及竞争适应性强的特点。The condition of severe burning on natural regeneration of Larix gmelinii-Butula platyphylla was investigated.Result shows that Larix gmelinii can produce seeds normally after severe burning of Larix gmelinii-Butula platyphylla.Three,six&ten years after the fire,the number of natural regeneration for larch reach560,1533&5650trees hm-2,respectively.In the severe fire area,Butula platyphylla were almost burnt.All Butula platyphylla seedlings are sprouted.The number of Butula platyphylla is750,2560&6530trees hm-2in the third,sixth&tenth year.For the natural regeneration seedlings in the burned area,the proportion of Larix gmelinii is decreasing year by year.The proportion of Butula platyphylla seedlings increasing year by year.Butula platyphylla shows the characteristics of pioneer tree species strong renewal ability and competitive adaptability.

关 键 词：重度火烧 兴安落叶松 白桦 自然更新 

分 类 号：S791.22[农业科学—林木遗传育种]