Study On Plants Diversity And Conservation In Daqinggou National Nature Reserve In Inner Mongolia

In the present study, the author analyzed the basic composition and thediversity of Daqinggou national nature reserve flora, and sorted out list of rareand endangered plants in this zone and list of regional endemic species inInner Mongolia flora.By survey of the wild vascular plants, there are about566species(including5subspecies,39varieties and1variation) in Daqinggou NationalNature Reserve, which belong to332genera, and103families. The dominantfamily was Compositae, the next were Gramineae, Legumiinosae，Rosaceae,Cyperaceae, Liliaceae, Polygonaceae, Ranunculaceae, Lamiaceae andChenopodiaceae, which accounted for52.03%of all plants. The largest genuswas Artemisia，the next was Carex, Polygonum, Potentilla, Viola, Periploca,Adenophora Fisch., Galium, Allium and Iris，which occupied18.43%of allspecies.The plant species in Daqinggou national nature reserve are relativelyrich， and the phytogeographical composition is complex. Plant genera weredivided into15areal-types and12subtypes, and plant species were dividedinto19distribution pattern and20sub-distribution pattern. Floristiccomposition in this nature reserve was mainly temperate components. plantLife form in this nature reserve were mainly herbs，which has531species andinfra-species ranks，and accounted for86.62%of all species. Ecological typewas mainly typical plants which had364species and infra-species ranks，andoccupied59.38%of all species.In Daqinggou, there were35regional endemic species (belonging to29genera,20families) in Inner Mongolia flora, which reflect the influence ofDaqinggou flora on the Inner Mongolia plant biodiversity.Compared with neighboring regions flora, the result showed it has the highest similarity coefficient with that of Horn labagoumen nature reserve inBeijing, the next were that of Hunshandake sandy land, Saihanwula naturereserve, and ChangbaishanMountain.Statistics on national and regional rare and endangered plant indicatedthat, there were36species belonging to34genera,24families. In which,two pteridophyte species belonging to2genera,2families, one gymnospermspecies belonging to1genera,1family, and33angiosperm species belongingto31genera,21families.