Excessive human activity can drastically change the balance of a lake's ecosystem, leading to harmful algae blooms. By studying the remains of tiny organisms called diatoms in Taibai Lake, scientists found evidence of major shifts in the lake's health over the past century. Breakpoints in diatom populations in the years 1994-1996, 1974-1977, 1952-1956, and 1931-1934 indicate significant changes in the lake's condition. The relationship between water flow and the ecosystem, as well as aquaculture practices, had a big impact on the lake's health. Understanding these changes can help us better manage shallow lakes like Taibai in the future.