老顶山火烧迹地恢复15年时植物区系特征研究

Study on Floristic Characteristics of Laoding Mountain Burned Areas After 15 years of Restoration

目前国内关于植物区系的研究已有很多,但对于老顶山地区全面、系统的研究尚属空白。距离老顶山2007年经历的火灾已经过去了15年,火烧迹地的植物区系已经有了很大的变化,为研究老顶山火烧迹地恢复15年时的植物区系特征,对老顶山火烧迹地的植物种类组成、植物生长型、植物科、属的地理成分等进行了分析研究。结果表明:调查区域内的植物共有35科69属99种,大多都是单种科单种属。其中被子植物种类占比较大,裸子和蕨类植物种类占比较小,且大多数植物属于草本植物。在对不同植物的种进行地理分析后发现,分布于北温带的植物具有最主要的优势。总的来看,老顶山火烧迹地恢复15年时的植物区系特征是植物种类单一,区系成分集中。要使老顶山火烧迹地的植物种类恢复到15年前的水平还需要一定的时间,且应该引进多种植物来增加植物的多样性。

At present,there have been a lot of studies on the flora in China,but the comprehensive and systematic study on the Laoding Mountain area is still a blank.It has been 15 years since the 2007 fire on Laoding Mountain,and the flora of the burned areas has changed a lot.In order to study the flora characteristics of the burned areas in the past 15 years,the plant species composition,plant growth types,plant family,and geographical composition of the genus were analyzed.The results showed that there were 35 families,69 genera and 99 species of plants in the survey area,most of which were single families and single genera.Among them,angiosperms accounted for a relatively large proportion;gymnosperms and ferns accounted for a relatively small proportion,and most of the plants belonged to herbs.A geographical analysis of the different plant species shows that plants distributed in the northern temperate zone have the main advantages.In general,the flora of the burned areas in Laoding Mountain was characterized by single plant species and concentrated floristic components.It will take some time for the plant species in the burned areas to recover to the level of 15 years ago,so a variety of plants should be introduced to increase the diversity of plants.