论文部分内容阅读
选择延庆县9条山区公路,用样方法进行调查,共作样方90个。分析了延庆县山区公路沿线植被的物种组成、群落结构,计测了各路段不同层次上和群落的Shannon-Wiener指数、Si mpson指数、Pielou指数。结果显示:组成延庆县山区公路沿线植被的植物种类有155种,隶属61科,其中延庆本地有104种,占总数的67.10%;乡土植物按类型划分有乔木21种,灌木27种,草本植物107种。延庆山区公路沿线植物群落结构以草地类型、灌草类型、灌丛类型为主。各路段群落垂直结构上物种多样性存在差异,但均以草本植物层多样性指数最高。栾赤路、松闫路、昌赤路沿线植物群落总体多样性较高。松闫路、栾赤路和玉海路沿线植物群落总的均匀度较高。
Nine mountain roads in Yanqing County were selected and surveyed by way of sample method for a total of 90 samples. The species composition and community structure of vegetation along the mountainous route in Yanqing County were analyzed. The Shannon-Wiener index, Si mpson index and Pielou index were measured at different levels and communities of each section. The results showed that there were 155 plant species belonging to 61 families along the highway in Yanqing County, belonging to 61 families, including 104 species in Yanqing, accounting for 67.10% of the total. There were 21 native trees, 27 shrubs, 107 species. The plant community structure along the highway in Yanqing Mountain is dominated by grassland type, shrub type and shrub type. The species diversity of the vertical structure of each community is different, but the diversity index of the herb layer is the highest. The overall diversity of plant communities along Luanchilu, Songyan Road and Chek Che Road is higher. Song Yan Road, Luan Red Road and Yuhai along the higher total plant community uniformity.