摘要
运用相关分析及响应函数分析,研究了当年及前一年生长季气温变化对人工林落叶松(Larix gmeli-nii)木材生长轮宽度和密度的影响。结果表明,当年初生长期及生长缓慢期的气温变化对人工林落叶松生长轮宽度影响强烈,初生长期及生长缓慢期的气温升高有利于提高落叶松的径向生长量,特别是有利于提高早材的生长量;前年初生长期及生长缓慢期的气温变化对落叶松的生长量也有影响,但不如当年生长季气温变化的影响显著。当年生长季气温对落叶松木材密度的影响不明显,但是前一年初生长期及生长缓慢期的气温变化对早材密度的影响强烈,此阶段的气温过高不利于落叶松木材密度的提高。
An experiment was conducted to study the effect of temperature change in the current year and the previous year on ring width and ring density of wood from Larix gmelinii plantation during growing season through correlation analysis and response function analysis. Results show that temperature change at the early period and the retard period of the current growing season has greatly influence on the ring width of larch wood, and the increasing temperature is benefit to improve the radial growth increment, especially the earlywood increment. The temperature change at the early period and the retard period of growing season in the previous year has certain effect on the growth increment, but it is not so significant compared with the effect of the temperature change in the current year. Temperature change in the current year during growing season has little effect on the radial variation of wood density, while temperature change at the early period and the retard period of growing season in the previous year has obviously influence on earlywood density, and much higher temperature is not favorable for improving wood density.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2007年第4期28-30,共3页
Journal of Northeast Forestry University
基金
国家自然科学基金项目(30471355)资助
关键词
生长季
气温
人工林
落叶松
生长轮宽度
生长轮密度
影响
Growing season
Air temperature
Plantations
Larix gmelinii
Ring width
Ring density
Effect
