滇中紫溪山维管植物区系初步研究

Preliminary study on the flora of the tracheophytes in ZIxi-shan Natural Reserve

2000—2008年采用系统调查和资料收集相结合的方法对云南省楚雄市紫溪山省级自然保护区的维管植物区系进行了调查,共统计到维管植物153科、429属、723种(包括变种、亚种和多年栽培种)。维管植物分布区类型组成是温带起源的科占总非世界分布科数的44.14%,温带分布属占总非世界分布属数的35.00%,其中,以北温带分布属最多,占总非世界分布属数的26.84%,其次是热带、亚热带分布科占总非世界分布科数的41.44%,热带分布属占总非世界分布属数的25.53%。说明紫溪山植物区系不仅具有温带性质,而且具有热带性质,是二者兼容的地区,属于中国-喜马拉雅森林植物区、云南高原地区、滇中植物省,为古热带植物区系与泛北极植物区系的结合。分布区类型的组成也表明此区系古特有种丰富。

The flora of the tracheophytes in Zi-xi-shan natural reserve is studied. There are 153 families,429 genera,723 species of tracheophytes recorded,including 10 genera that are endemic to China. In the floristic composition of the forest,the families of tempetate distribution take up 44.14% of total families and tropical take up 41.44%.The percent of tropical and temperate distribution elements show that this flora is in between tropical and temperate characteristics,a mixture of Sino-Himalaya forest flora,old tropical forest flora and panarctic forest flora. Occured in subtropics.