The ediment accumulation rates were estimated from the vertical distribution of excess

210

Pb measured in sediment cores collected from Lake Poyang

Jiangxi. These rates were various with the difference in hydrology. The sedimentation rates are the lowest in the middle region of the lake

in which two samples could not be determined and the other one is 0.14 cm/a. The sedimentation rates are lower in the northeast basin section

averaging 0.19 cm/a. In the diffusion area of the lake from which 5 rivers enter sand deposion is more than in other areas of the lake and the hydrology factors are various

the sedimentation rate variation is lager. They are from 0.08 cm/a to 0.28 cm/a. Because of the and from the Yangzhi River the sedimentation rates are the highest in the water-way section of the lake

averaging from 0.23 cm/a to 0.62 cm/a.