重庆中梁山海石公园石灰岩山地植物多样性研究

A Study on the Species Diversity of Plants on the Haishi Park Limestone Shrubland in the Zhongliang Mountains of Chongqing

以25个5 m×5 m的样方为基础,研究了海石公园20 a无干扰的石灰岩山地灌丛植被情况.运用重要值、丰富度指数、均匀度指数和多样性指数分析了该区植物组成与多样性,并与云阳人工柏木林和缙云山草珊瑚群落对比.结果表明:在625 m2样地中有维管束植物78种,群落各层次的丰富度大小格局依次为灌木层,草本层,藤本植物;多样性大小格局依次为灌木层,草本层或等于藤本植物;均匀度大小格局依次为藤本植物,灌木层,草本层.相对于云阳人工柏木林和缙云山草珊瑚群落,本群落的多样性指数较高.

The species composition and diversity of plants on the Haishi Park limestone shrubland without anthropogenic disturbance for 20 years were studied based on data from 25 5 m×5 m plots. Important value index, richness index, species diversity index and evenness index were used to analyze the species composition and diversity of plants in the region and a comparison was made between the results of the study with the Cupressus funebris forest in Yunyang and the Sarcandra glabra communities in the Jinyun Mountains. A total of 78 species of vascular plants were found in the 625 m^2 plots. Richness index was in the order of shrub layer 〉 herb layer 〉 liana layer; species diversity index in the order of shrub layer〉herb layer ≥ liana layer and evenness index in the order of liana layer 〉 shrub layer 〉 herb layer. Species diversity index in Haishi Park was higher than that in C. funebris forest in Yunyang and S. glabra communities in the Jinyun Mountains.