| 不同林分密度指标的比较研究 |
| |
| 引用本文： | 张连金,惠刚盈,孙长忠.不同林分密度指标的比较研究[J].福建林学院学报,2011,31(3):257-261. |
| |
| 作者姓名： | 张连金 惠刚盈 孙长忠 |
| |
| 作者单位： | 1. 中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091
2. 中国林业科学研究院华北林业实验中心,北京,102300 |
| |
| 基金项目： | 国家自然科学基金资助项目(30872021) |
| |
| 摘 要： | 用28年生杉木造林密度试验林的逐年观测数据,对林分密度指数、相对植距和优势高—营养面积比3个林分密度指标进行比较分析.结果表明:(1)不同造林密度林分达到一定年龄后,相对植距几乎相等,无法体现不同密度之间的区别,不是一个理想的密度指标;(2)利用Statistica统计软件,通过牛顿迭代法,基于Richards方程分别...
|
| 关 键 词： | 杉木 林分密度指数 相对植距 优势高—营养面积比 |
Comparison of different stand density measures |
| |
| ZHANG Lian-jin,HUI Gang-ying,SUN Chang-zhong.Comparison of different stand density measures[J].Journal of Fujian College of Forestry,2011,31(3):257-261. |
| |
| Authors: | ZHANG Lian-jin HUI Gang-ying SUN Chang-zhong |
| |
| Institution: | ZHANG Lian-jin1,HUI Gang-ying1,SUN Chang-zhong2(1.Research Institute of Forestry,Chinese Academy of Forestry,Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091,China,2.Forestry Experiment Center of North China,Beijing 102300,China) |
| |
| Abstract: | The three stand density measures,including stand density index,relative spacing and ratio of dominant height to nutrient area,were analyzed and compared by using the data obtained year by year during 28-year-old Cunninghamia lanceolata from the different planting density experiment stands.The results show that:(1)The relative spacing of various planting density stands were almost equal after stands reached a certain age,which could not reflect the difference between the different planting densities.So the r... |
| |
| Keywords: | Cunninghamia lanceolata stand density index relative spacing ratio of dominant height to nutrient area |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
