摘要
利用Logistic方程对黑杨派 (Populusaigeiros)杨树 4个无性系的扦插苗高年生长节律进行拟合 ,拟合效果显著 ,并以此将无性系扦插苗的生长过程分为成活期、生长前期、速生期和生长后期。对影响苗木生长的气温、空气相对湿度、日照时数和降水量进行灰色关联度分析 ,认为气温对苗高生长影响最大 ,降水量影响最小。
Logistic equation is applied to model annual height increment of four poplar clones (Populus aigeiros) at seedling stage. Influence of climatic factors such as air temperature, relative humidity, precipitation and illuminating hours on the height growth is analyzed. The results show that correlation of the modeling is significant. Based on the equation, annual growth of the seedlings can be divided into four phases, namely survival phase, pre-growth phase, fast-growth phase and post-growth phase. Growth performance of each phase is also described and discussed. Air temperature is believed to have the most significant influence on the height growth and precipitation the least.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2004年第5期7-9,共3页
Journal of Northeast Forestry University
关键词
黑杨派
无性系
苗期
LOGISTIC方程
生长模型
灰色关联度
Populus aigeiros
Poplar clone
Seedling stage
Logistic equation
Growth model
Gray correlation analysis
