摘要
根据 2 4 1块样地 ,统计出杉木及其 8个混交树种的垂直温暖指标的频数分布 ,经 χ2检验表明绝大多数混交树种呈正态分布 ,个别近似正态分布 .半峰宽公式计算结果表明 ,杉木及其主要混交树种垂直温暖指标的全范围为 90 .5～ 1 73.3℃ · 月 ,最适范围为 1 0 5.5～ 1 62 .8℃ · 月 ,变动系数范围为 0 .0 89～ 0 .1
This paper deals with Correlation between vertical distribution and vertical thermal index of Chinese fir and its mixed species by means of statistics of vertical frequency distribution of Kira's warmth index of the species from 241 samples in Fujian χ 2 test showed that six species obeyed normal distribution, And only two species nearly obeyed normal distribution Whole range of their vertical thermal distribution was 90 5～173 3℃·month And optimal range was 105 5～162 8℃·month by using the formula of peak width at half height
出处
《福建林学院学报》
CSCD
2000年第3期211-214,共4页
Journal of Fujian College of Forestry
基金
福建省科学技术委员会科学基金资助项目! ( 97-Z-2 19)
福建省自然科学基金资助项目 !( C880 2 1)
福建省"2 11"重点学科基金资
关键词
杉木
混交树种
温暖指标
垂直热量分布
Kira's warmth index
Chinese fir
mixed species
optimal range
peak width at half height
