燕山山脉豆茶决明资源及其伴生植物调查

Survey on Distribution Status of Cassia nomame Resources and Its Accompanying Plants in Mountain Yanshan

为了解燕山山脉豆茶决明种质资源现状,采用访问调查、路线调查和典型样地调查法,对燕山山脉豆茶决明资源和16个栖息地生境的伴生植物进行系统调查。结果表明:燕山山脉豆茶决明主要生长在阳坡;生境的伴生植物共有26科75种,种类最多的是菊科、豆科和禾本科,分别有17种,11种和8种;自然状态下的伴生植物均为灌木和草本,没有生境共有伴生植物;从伴生植物区系组成属的地理成分看,世界分布属占15.8%,热带分布属占33.3%,温带属占50.8%。

In order to comprehend the germplasm resources of Cassia nomame in Mountain Yanshan, a systematic investigation of Cassia nomame resources and associated plants in 16 habitats was conducted based on interview syrvey, route survey and representative plot survey. The results showed that the Cassia nomame in Mountain Yanshan mainly grew in sunny slope and the accompanying plants in biotope were composed of 75 species belonging to 26 families, most species were Compositae（ 17）, Leguminosae（ 11 ） and Gramineae（ 8 ）, respectively. The accompanying plants under the natural conditions were shrubs and herbs, there were not the same accompanying plants in investigated biotope. Based on the analysis of genera, the results indicated that at the level of genera among associated plants, the genera belonging to World distribution accounted for 15.8 % in total, the Tropic distribution accounted for 33.3 % in total, and the Temperate genera accounted for 50.8 % in total.