林业板块8月28日跌3.64%，平潭发展领跌，主力资金净流出2979.49万元

Group 1 - The forestry sector experienced a decline of 3.64% on August 28, with Pingtan Development leading the drop [1] - The Shanghai Composite Index closed at 3843.6, up 1.14%, while the Shenzhen Component Index closed at 12571.37, up 2.25% [1] - Key stocks in the forestry sector showed varied performance, with ST Jinggu up 0.69% and Pingtan Development down 6.20% [1] Group 2 - The net outflow of main funds in the forestry sector was 29.79 million yuan, while retail investors saw a net inflow of 13.74 million yuan [1] - Detailed fund flow data indicated that ST Jinggu had a main fund net inflow of 1.31 million yuan, while Pingtan Development had a net outflow of 4.10 million yuan [2] - The retail inflow for Fujian Jinsen was significant at 11.19 million yuan, despite a main fund outflow of 14.19 million yuan [2]