半干热石质山地墨西哥柏伴生树种选择研究

在云南省开远市浑水塘试验地设置了35个20 m×20 m的标准地,对标准地内4 a生的主要造林树种墨西哥柏及4个供选伴生树种（羽叶山黄麻、新银合欢、直干桉、赤桉）地径、树高、胸径、冠幅分别进行测量,选择平均木,对平均木生物量、生长量进行测定.经数据分析后认为,新银合欢生长速度慢于墨西哥柏且枝少叶疏,适宜作为墨西哥柏的伴生树种,羽叶山黄麻冠幅虽大,但枝叶稀疏,可作为墨西哥柏的次适宜伴生树种.

Study on Associated Species Selection for Cupressus lusitanica in Semi-Dry and Hot Stone Mountain Area

Choosing 35 sample plots （20 m × 20 m） located in Huishuitang of Kaiyuan city as experi- mental sites, the Cupressus lusitanica and 4 associated species were studied, including measure basal di- ameter, tree height, DBH, crown diameter, biomass and growth increment of sample tree. These four associated species are Trema levigata, Leucaena leucocephala, Eucalyptus maideni, Eucalyptus camaldu- lensis. The results of indicates that the growth speed of L. leucocephala is slower than that of C. lusitani- ca, and with fewer branches and leaves, is a suitable associated species of C. lusitanica. T. levigata has big crown diameter, though the amount of branch and leaf is little, so it can be an option of associated species.