内蒙古沙地的白扦与白扦林

内蒙古沙地云杉林究竟是哪一种，在植物分类学上是一个争论性的问题。本文通过标本考证、栽培实验、实地调查研究，证明了此种为白扦(Picea meyeri)而不是红皮云杉(Picea koyamia var.koraiensis)，并在此基础上，分析了沙地白扦林的群落学特点。

Picea meyeri and Its Spruce Forest in the Nei Monggol Sands

There is a large area (about 5,900 hectare) covered with a primitive spruce forest in the sands at Baiyinaobao of Hexigten Banner in Nei Monggol. But which species this spruce forest belongs to is still a debatable problem in botanical taxonomy. The author has studied on this subject in different ways, which include investigation on the spot, identification of specimens, cultural experiments and analysis of geographic distribution.According to the research result, the species of the forest identified by the author is Picea meyeri Rehd. et Wils. This kind of spruce forest is a very rare and special type of forest ecosystem in the world. The detailed studies on phytocommunity characteristics provided scientific basis for improving the sands in western part of North-east China and eastern part of Nei Monggol and founding of a shelterbelts in North-east, North-west as well as North China.