【摘要】 通过调查,在滦河中下游(大黑汀水库至入海口段)河岸带共记录种子植物45科109属147种.优势科为:菊科25种,禾本科23种,藜科10种;区域性单种科达23科.该区域内温带植物成分占据很大优势,温带分布属48属,占总属数(除世界分布)63.16%,少量存在的热带成分使区域内的植物表现出过渡性,体现出热带边缘区系的特点.更多还原

【Abstract】 Through investigation,a total of 147 species in 109 genus 45 families seed plants were recorded in the Luan River downstream( Daheiting reservoir to the estuary segment). The dominant families are: Asteraceae( 25species),Poaceae( 23 species), Chenopodiaceae( 10 species); regional single species Coda 23 families.Temperate region plant ingredients take great advantage,temperate distribution 48 genera of the total genera( except World Distribution) 63. 16%,there is a small component of the region’s tropical plants exhibit transition,reflecting the edge of the tropical flora characteristics.更多还原