内蒙古草原与荒漠区几种锦鸡儿种群格局的研究

A Studyon the Population Patterns of Some Caragana spp.in the Steppe and Desert Regions of NeiMonggol

根据野外调查资料，利用Ｇｒｅｉｇ－Ｓｍｉｔｈ的格子样方法对在内蒙古草原与荒漠区广泛分布的五种锦鸡儿的种群格局进行了研究．结果表明，植物种群的空间格局包括形态学格局与环境格局两个方面．五种锦鸡儿的形态学格局差异较大，主要取决于各自的生物学特性，而环境格局则可能受土壤和气候的影响．在研究灌木植物种群格局的过程中，绘图与Ｇｒｅｉｇ－Ｓｍｉｔｈ格子样方法结合使用具有比较明显的优越性，可以提供比较全面的信息，是一种比较合理实用的方法．

y using the data obtained from field survey and the method of Greig-Smith grid of contigu-ous quadrats, research has been made on the population patterns of 5 species of Caragana thatwidely distribute in the steppe and desert regions of NeiMonggol. Results showed that the spacepattern of plant population includes morphological pattern and environmental pattern. The mor-phological pattern of 5 species of Caragana have obvious differences,which are mainly determinedby thelr biological natures,but their environmental pattern might be influenced by soil nature andelimate conditions. The study of shrub population pattern showed that the method of maping andthe Greig-Smith grid of contiguous quadrats is a suitable and practical one , which can providecomprehensive information.