关键词: 竞争, 邻体干扰模型, 水曲柳, 落叶松, 纯林, 混交林

Abstract: This paper preliminarily deals with the diffusion pattern of air fluoride, distribution pattern of fluoride pollution and influence of this pollution on herbages in western part of Baotou iron and steel plant. Results show that: 1. a stepwise change with the distance of pollution source and a significant correlation can be found for the concentration of air fluoride and the content of fluoride in herbages; 2. no obvious influence of fluoride pollution is appeared for the growth and development of herbages.

Key words: Competition, Neighborhood interference model, Fraxinus mandshurica, Larix gmelini, Pure stand, Mixed stand