六盘山区伏毛铁棒锤的分布格局与生态适应特性的初步研究

以六盘山区分布的伏毛铁棒锤为研究对象,分析了它的生态分布格局及其生态适应特性。结果表明,受光照、土壤类型、海拔高度以及温度的影响,伏毛铁棒锤分布于海拔2 300 m以上的山地,分布区的生境多为空旷、光照良好的高山草甸,在个体生长发育过程中对光照、土壤类型及温度等环境因子要求较为严格,种群呈聚集分布格局,伴生植物以菊科、禾本科植物为主,分布于同一山坡不同海拔高度的群落之间相异性较小;阳坡居群的群落密度、盖度和生长状况均优于阴坡。

Preliminary Study on the Distribution Pattern and Ecological Adaptability of Aconitum flavum Hand.-Mlazz.

Based on the observation of samples in Liupanshan area,Ningxia province,the distribution pattern and ecological adaptability of Aconitum flavum Hand.-Mazz.were analysed.The results showed that Aconitum flavum Hand.-Mazz.mainly appeared in valleys above sea-level of 2 300 m because of the influence of sunshine,soil type,elevation and temperature.Ecological environment of its distribution region was the spacious alpine meadow with well sunshine.In the population,the plant showed a kind of clumping distribution pattern and the plants of Compositae and Gramineae were its main companion,similarity among communities at the same slope with different elevations.The population growth in sunshine slope was dominant in aspects of population density,population coverage and growing state compared with the population growth in shadowy slope.