摘要
依据植被地带性分布规律及植物群落结构原理，对黄土高原大面积建造林草植被的实践和学术上存在的有关问题进行了分析讨论。认为对造林而言应强调适地适林，“适地适树”的提法有不确切性，因为很多适地适树的树种用作主要造林树种则不适宜。指出应选择相应地带植被优势种用于造林种草，辅以伴生种，建立不同类型的复层混交植被。森林带、森林草原带、草原带分别以针阔混交、乔灌草混交、稀树灌草丛模式为主。从人工林草地土壤水分动态看，“草灌先行”的造林途径是不可行的。
According to the laws of zone distribution of vegetation and community constitution,this paper discussed some issues existed practice and researches about establishing vegetation in large area on Loess Plateau.Author considered it should be emphasized to select suitable wood types,not only trees,to the site.Because many tree species is suitable to plant trees but is not suitable for afforestation at same sites,so “suitable woods to the sites” is better than “suitable trees to the sites” for afforestation.To establish different types of artificial multi storied mixture woods and grasslands,the domi nants of corresponding vegetation zone should be selected as fundamental species,meanwhile,some companions is used as minor species.In plantation zone,forest steppe zone and steppe zone,the mixed forest of conifer and broadleaf,mixture of trees with shrubs and herb as well as shrub steppes with sparse trees are respectively main types of artificial vegetation.According to the research results,it wont do to use herb and shrubs as pioneer for establishing plantation vegetation.
出处
《西北植物学报》
CAS
CSCD
1999年第5期26-31,共6页
Acta Botanica Boreali-Occidentalia Sinica
