摘要：A monthly investigation of intracellular and extracellular microcystin (MCs) was carried out from January to December 2009. The spatial and temporal variation suggested that some areas of Lake Taihu are contanimanted by microcystin (MCs), especially during the Summer and Autumn, in the places of Meiliang Bay, Gonghu Bay and Yixing Bay. At Meiliang Bay, the maximum concentration of intracellular MC-RR and MC-LR reached as high as ȝJ/DQGȝJ/LQ2FWREHUZKLOHIRUH[WUDFHO lular MCs, the number of it peaked in August ȝJ/DQGȝJ/ DW0HLOLDQJ%D\IROORZHG by the number of it in Gonghu Bay and Yixing Bay. This suggested that the municipal contamination, industrial wastewater and traffics should be responsible for the occurrence of cyanobacteria bloom. The ratio for intracellular MCs to extracellular MCs was extremely high, reach as high as 220 times, thus the intracellular MCs was a big potential hazard to ecosystem. The spatial variablity of MCs also referred that some solutions, such as aquatic macrophyte, may be functional in the prevention of cyanobacteria bloom.
