摘要
对渭北沟壑区的人工刺槐林进行了树高、胸径及根系测定和回归分析 ,建立了树高、胸径与根系之间关系的经验方程式 ,对刺槐林根系进行定量分析。归纳分析其根系分布规律 :当≥ 7.1cm时 (为 13a)水平分布达到均匀状态 ,此时林分根量为 12 9.183g/m2 ;当≥ 3.0cm时垂直分布层间 (0～ 10cm ,11～ 30cm ,31～ 5 0cm)达到相对稳定状态 (林龄为 4a) ,其层间根量比为 3.2 3∶1.5 7∶1。
The planted elm forests in Weibei gully area are objectively investigated. It is found that when D≥7.1 cm(13 a),the horizontal distribution is even and the amount of root is 129.183 g/ m^2; when D≥3.0 cm, the vertical distribution (between 0～10 cm,11～30 cm,31～50 cm) gets stable (the age of the elm forests is 4 a) and the ratio of amount of root in each stratum is 3.23∶1.57∶1.
出处
《西北林学院学报》
CSCD
北大核心
2004年第3期4-6,共3页
Journal of Northwest Forestry University
关键词
刺槐
树高
根系
分布
locust
tree height
root
distribution
