Abstract:In order to understand the effect of environmental factors on bryophytes, the biodiversity and environmental factors of bryophytes on the wall of Zhaobishan in Guiyang City were studied by CCA. The results showed that there were 45 species of bryophytes on the wall of Zhaobishan, belonging to 9 families and 17 genera, and Fissidentaceae, Pottiaceae, Brachytheciaceae, Bryaceae, and Thuidiaceae were dominant families. The species composition, dominant species, and common species of bryophytes were different in different parts of wall. The dominant and common species of bryophytes in the upper and middle parts of wall were mainly short turfs, and those in the lower wall were mainly wefts. The analysis of CCA showed that temperature and humidity were the main factors affecting the distribution of bryophytes on the wall. Hyophila involuta, Didymodon constrictus, Didymodon ditrichoides, Fissidens bryoides var. bryoides could grow well in all parts of the wall. Therefore, it was suggested that the suitable bryophytes could be selected in the karst urban vertical greening.