摘要：The attenuation coefficient of photosynthetically available radiation [K d (PAR)] and three water quality parameters [chlorophyll a (chl a)], chromophoric dissolved organic matter (CDOM) and tripton] were measured at three stations in shallow, subtropical Lake Donghu from April 2003 to March 2004. The multiple regression equation of K d (PAR) versus chl a, CDOM, and tripton was: K d (PAR) = 0.44 0.019 chl a 1.88 CDOM 0.016 tripton, which revealed the relative contributions of the three parameters to &(PAR). The effects of water and CDOM on K d (PAR) were of minor importance (19-26%), while chl a and tripton were the two greatest contributors, accounting collectively for 74-81%.
