| 大青山主要林型林分密度与竞争关系的研究 |
| |
| 引用本文： | 宝秋利,代海燕,张秋良,马久.大青山主要林型林分密度与竞争关系的研究[J].干旱区资源与环境,2011(3):152-155. |
| |
| 作者姓名： | 宝秋利 代海燕 张秋良 马久 |
| |
| 作者单位： | 内蒙古农业大学职业技术学院;内蒙古气象局生态与农业气象中心;内蒙古农业大学林学院;乌兰察布市察右后旗农牧业局; |
| |
| 基金项目： | 教育部重点基金项目(2006026); 林业公益性行业科研专项(200804027-03,04)资助 |
| |
| 摘 要： | 采取克拉夫特分级法d=r/的公式(r:林木胸径,R:林分平均胸径),进行Ⅰ-Ⅴ级木分类,以大青山油松人工林、落叶松人工林和白桦天然次生林为主要研究对象,对比分析不同密度下林木分级、竞争和径阶的变化情况,为大青山植树造林提供相对适宜的密度区间。结果表明:大青山油松人工林密度不宜超过3200株/hm2,落叶松在1700株/hm2时林木分化现象并不明显。白桦天然次生林因萌生起源、年龄因素的影响,密度对其分级木影响效应不显著。
|
| 关 键 词： | 大青山 分级木 密度 胸径 |
Relationship between the forest density and competition of the main trees in Daqing Mountains |
| |
| BAO Qiuli,DAI Haiyan,ZHANG Qiuliang,MA Jiu.Relationship between the forest density and competition of the main trees in Daqing Mountains[J].Journal of Arid Land Resources and Environment,2011(3):152-155. |
| |
| Authors: | BAO Qiuli DAI Haiyan ZHANG Qiuliang MA Jiu |
| |
| Institution: | BAO Qiuli1,DAI Haiyan2,ZHANG Qiuliang3,MA Jiu 4(1.College of Vocational Technology,Inner Mongolia Agricultural University,Baotou 014109,P.R.China,2.Meteorology Center of Ecology and Agriculture,Inner Mongolia Meteorological Bureau,Huhhot 010051,3.College of Forestry,Huhhot 010019,4.Agricultural and Animal Husbandry Bureau of Chayouhouqi in Wulanchabu City,Baiyinchagan 012400,P.R.China) |
| |
| Abstract: | On the basis of investigated samples of forest at Daqing Mountain,the formula d=r/(r: individual diameter breast height,:mean diameter at breast height) was used to class the stems to Ⅰ-Ⅴ levels with relative diameter at breast height,and it was used to analyze the density influences on forest structure,the class of stem and the competition of Pinus tabulaeformis,Larix principis-rupprechtii and Betula platyphlla.The results indicate that the proper density of pinus tabulaeformis is less than 3200 stand·hm2,and the competition of Larix principis-rupprechtii is not serious with 1700 stand ·hm2 of the density.The Betula platyphlla is influenced by origin and ages,the density influence is not notable. |
| |
| Keywords: | Daqing Mountain the class of stem density diameter at breast height |
| 本文献已被 CNKI 等数据库收录！ |
|
