东北松嫩草原区亚气生蓝藻的初步研究

THE SUOAERIAL CYANOPHYCEAE OF NORT EAST SONGNEN STEPPE

1 前言松嫩平原是我国东北最大的平原。西部以大兴安岭山麓丘陵和台地为界,北部和东部以伊勒呼里山和小兴安岭山麓和台地为界,南以松辽分水岭为界。其地理位置:北纬43°30′～48°41′,东经121°30′～127°。全区地势平坦,只有微形起伏,海拔高度在150—200米之间。这里草本植物茂盛,草质优良,产草量高,是我国最好的草地之一。也是我国发展畜牧业的重要基地之一。近年来,人们对松嫩平原植被做了大量的研究,

This paper deals with the initial algae flora of subaerial Cya- nophyceae from Songen steppe in Northeastern Provinces of China. As result of our preliminary study,there are 28 species and varieties.These belong to 15 gemera of 4 families.Among them there are 7 speoies recorded as new ones in China and 10 species new in Northeastern Provinces of our country.