滇东南岩溶山区造林树种选择试验

通过刀个树种3年来的造林对比试验,对参试树种进行适应性、抗逆性、生长量、生产力及生态效益等的综合评价,结果表明滇东南岩溶山区的荒山,由于立地条件较差,造林后林木生长缓慢.恶劣的自然条件对造林的保存率影响极大,显示了岩溶地区绿化造林和植被恢复的艰巨性.树木截留雨量的能力与立木生长和生产力有直接的关系,即选择生长快、生物量大的树种造林,不仅能取得较好的经济效益,也能得到较高的生态效益.对滇东南岩溶山地适应性最强的树种是墨西哥柏、冲天柏、藏柏、郭芬柏和湿地松等针叶树,适应性较强的树种有川滇桤木、苦刺、圣诞树、杜仲、任豆、酸枣和滇合欢等阔叶树,这些树种可在滇东南岩溶山区的绿化造林中推广种植.

Reforestation Species Selection for Karst Mountain Area in Southeastern Yunnan

Planting test of 27 species was carried out in Chongka experimental base of Yanshan county,Yunnan for three years.The adaptability,stress resistance,growth increment,biomass and ecological function of each tested species were evaluated.The results indicated that the poor site condition of mountain waste in southeastern Yunnan was a big restrict factor for plantation which caused slow growth and low preserving rate.The interception of trees directly correlated with increment growth and biomass, plantation with rapid grow species and big biomass could obtain significant economic benefit as well as ecological benefit.Among the species tested,the coniferous species Cupressus lusitanica,C duclouxiana,C torulosa,C goveniana and Pinus elliottii;the broad leaved species Alnus cremastogyne,Sophora davidii,Acacia dealbata,Eucommia ulmoides,Zenia insignis,Choerospondias axillaris and Albizia mollis were suitable for the site condition of Karst mountain areas in southeastern Yunnan and could be extended.