Abstract:Field measurements were carried out in Meiliang Bay of Taihu Lake on 16th August, 2006, 28th March 2007 and in whole Taihu Lake from November to December 2007 to analyze the spatial-temporal variation of chromophoric dissolved organic matter (CDOM) molecular weight and its influencing factors. High molecular weight CDOM was mainly collective in Meiliang bay. However, distribution of CDOM in whole Taihu Lake was more complicated. The high molecular weight CDOM hold the leading position in northern Taihu Lake, while in the east and west was mainly low-molecular-weight CDOM; The content of high and low molecular weight CDOM in South were in relative balance. The sensitivity of S in different wavelength range to the molecular composition had a certain difference. S in the UVR wavelength range was most sensitive to the CDOM’s molecular composition, followed by UV-A, UV-B, and UV-C. Terrestrial sources were the primary influencing factors of CDOM in Meiliang Bay. The influencing intensity of terrestrial sources varied with season, and the greatest and weakest influence occurred in August and November, respectively.
黄昌春, 李云梅, 孙德勇, 乐成峰, 王利珍. 太湖CDOM紫外吸收特性及其分子量时空分布特征[J]. 中国环境科学, 2009, 29(3): 261-268.
HUANG Chang-Chun, LI Yun-Mei, SUN De-Yong, LE Cheng-Feng, WANG Li-Zhen. Spatial-temporal distribution of CDOM molecular weight and its ultraviolet absorb coefficience characteristics in Taihu Lake. . CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(3): 261-268.