摘要
应用模拟灌木平茬的采样方法,采集、测定了宁夏21种主要木本植物1～5年生树的热值.发现植物热值存在1年生>4年生>2年生>5年生>3年生的变化规律.方差分析与多重比较结果表明,除一四年生间、二四年生间和三五年生间差异不显著外,其余两两间均差异极显著或显著,这一规律的发现对指导灌木或乔木灌木状经营薪炭林的利用有重要意义.
Calorific values of l-5 year old trees of 21 main woody plant species in Ningxia were determined by using a sampling method similar to that of cutting fuel shrub forest. It was discovered that 1 year old woody plants had the lowest calorific value variation. Through variance analysis and multiple comparison, significant differences appeared between trees of different ages and their calorific values. The only exceptions were 1 year and 4 year old trees, 2 year and 4 year old trees, and 3 year and 5 year old trees. These results are of great importance in the management of fuel shrub forest.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
1992年第3期46-53,共8页
Journal of Beijing Forestry University
关键词
木本植物
热值
树龄
calorific value, wood plant, management of fuel shrub forest, tree ages
