柴达木盆地荒漠土壤蓝藻群落的初步研究  

PRELIMINARY STUDY ON THE BLUE-GREEN ALGAE COMMUNITY OF ARID SOIL IN QAIDAM BASIN

作　　者：洪英[1] 李尧英[1] 黎尚豪[1] 

机构地区：[1]中国科学院水生生物研究所

出　　处：《Acta Botanica Sinica》1992年第3期161-168,共8页Acta Botanica Sinica（植物学报：英文版）

摘　　要：本文分析了柴达木盆地东部和中部具有代表性地区的丘陵、戈壁和沙丘的蓝藻种类组成、生物量及主要的土壤化学成分;采用了模糊聚类、系统聚类及多元线性回归等方法分析藻类的群落及其与环境因子的关系。共鉴定出21种蓝藻,其中6种为国内首次报道。研究表明:土壤含磷量、总盐量及与粘性和湿度有关的土壤结构是决定柴达木盆地蓝藻群落组成的重要因素。Although the arid and subarid lands cover one third area in China,yet the soil blue- green algae flora and its comumunity of desert area has not been reported previously.In this paper,the preliminary study on the species composition and abundance of the blue-green algae community of the sanddunes,gobis and hills the some places in the east and middle parts of the Qaidam Basin is reported.21 species of blue-green algae were identified.Among them, Phormidium foveolarum and Lyngbya digueti occurred most frequently,then Microcoleus va- ginatus and Schizothrix undulatus,Mixosarcina chrococcoides,Myxosarcina concinna,Schizo- thrix undulatus Tolypothrix fragilis,Anabaena variabilis f.tenuis and A.oscillatorioides f.mi- nor were firstly recorded in China.The relationship between the environment and the blue- green algae distribution was determined and analysed using the methods of fuzzy cluster,clu- ster and multivariate linear correlation.It is concluded that the moisture of air and soil plays the primary role in the growth of soil algae in desert area.The species number and abundan- ce of soil algae in Qaidam Basin are affected by soil ionic strength and soil texture relating to the cohesiveness and retention of water.Significant positive correlation between biomass and PO_4^(3-)-P contents in the soil was also found.

关 键 词：荒漠蓝藻群落 柴达木盆 土壤蓝藻 

分 类 号：Q949.221[生物学—植物学]