Abstract: Illumina Miseq technology was used to study the microbial community structure and diversity of Fu brick tea made in different regions. The results showed that the bacterial species of Fu brick tea were various, which consisted of 9 phyla, 16 classes, 29 orders, 50 families, 66 genera, and Lactococcus was dominant fungi. The prokaryotic microbial abundance and diversity of Fu brick tea made in Hunan were highest. Fungi analysis results showed that there were 2 phyla, 6 classes, 6 orders, 7 families and 7 genera, and the Aspergillus was the absolutely dominant strain, with the abundance of over 92% in each sample. In addition, the abundance of yeasts was less than 1%, and the yeasts included Candida, Pichia, Galactomyces, with different abundances for the samples produced in different regions. The eukaryotic microbial abundance of Fu brick tea made in Shaanxi was the highest. The cluster analysis showed that the samples of Fu brick tea produced in the same area were closer, suggesting that the regional environment and processing technology were the main factors affecting microbial community structure of Fu brick tea.

Key words: Hurst index, Qinling-Daba Mountains, net primary productivity, MOD17A3