林窗干扰对沙地樟子松人工林更新特征的影响  

Effects of Forest Gaps Disturbance on Regeneration Pattern of Pinus sylvestris var.mongolica Plantations

作　　者：孙双红 朱宾宾 景璐 常金财 胡磊 宋来萍 常青 孙玉芬 Sun Shuanghong;Zhu Binbin;Jing Lu;Chang Jincai;Hu Lei;Song Laiping;Chang Qing;Sun Yufen(Institute of Forestry and Grassland Science in Hulunbeier,Hulunbeier 021000,P.R.China;Development Center of Forestry and Grassland in Hulunbeier;Comprehensive Support Center of Forestry and Grassland Bureau in Hulunbeier;Institute of Forestry and Grassland Science in Hulunbeier)

机构地区：[1]呼伦贝尔市林业和草原科学研究所,呼伦贝尔021000 [2]呼伦贝尔市林业和草原事业发展中心 [3]呼伦贝尔市巴林林业局 [4]呼伦贝尔市林业和草原局综合保障中心

出　　处：《东北林业大学学报》2022年第2期6-10,共5页Journal of Northeast Forestry University

基　　金：内蒙古自治区自然科学基金项目(2020MS03020)。

摘　　要：为研究林窗干扰对呼伦贝尔沙地樟子松人工林林下更新特征的影响,在施业区内选取不同大小林窗20个,对林窗内更新苗特征进行调查,通过灰色关联度分析法对更新的影响因子进行分析。结果表明:林窗下更新影响因子关联度排序由大到小依次为林窗面积、林窗开敞度、枯落物厚度,表明林窗面积对林窗更新影响显著。樟子松幼苗更新密度在林窗面积为50~80 m^(2)时最大。林窗内更新苗以低矮植株(50 cm以下)为主、冠幅以10 cm以下为主,年龄多为1年生及2年生幼苗。樟子松更新苗在林窗东南或西南方向群聚生长。The experiment was conducted to study the effects of forest gaps disturbance on the regeneration pattern of Pinus sylvestris var.mongolica in Hulunbeier.In the application area,20 forest gaps of different sizes were selected to investigate the characteristics of regeneration seedlings within the forest gap.The main factors of regeneration were analyzed by using the grey correlation analysis.The order of correlation degree of influencing factors of natural regeneration under forest gaps was in descending order of forest gap area,opening degree and litter depth,indicating that the forest gap area had the biggest influence on the natural regeneration.The regeneration seedling density of P.sylvestris var.mongolica was the highest when the forest gap area was 50-80 m^(2).The regeneration seedlings in the forest gaps are mainly low-lying plants(<50 cm),the crown widths are mainly below 10 cm,and the ages are 1-and 2-a seedlings.The regeneration seedling of P.sylvestris var.mongolica cluster in the southeast or southwest under the forest gap.

关 键 词：沙地樟子松 林窗干扰 人工林 更新特征 灰色关联分析 

分 类 号：S754.1[农业科学—森林经理学]