In order to study the pollution of nutrients and heavy metals in Changdang Lake，the contents of nutrients and heavy metals are
determined，the spatial distribution is analyzed and the pollution is evaluated． The results show that the average values of organic matter，total
phosphorus and total nitrogen are 2．47%，695 mg /kg and 995 mg /kg，according to the standard of pollution assessment． They belong to first－
level sections． The average values of Cr，Ni，Cu，Zn，As，Cd，Hg and Pb are 83．60，4．90，39．50，136．50，11．41，0．37，0．05 and 32．80 mg /kg，
all of them exceed the background value of soil heavy metals in Jiangsu Province，results of geo－accumulation index show that Cu，Zn，Cd
and Hg are serious pollution．In terms of spatial distribution，the nutrient values are higher and the pollution of heavy metals is more serious in
the western region．
LI Zhi-qing, WANG Jun, WU Su-shu, WU Pei-pei, XU Ji-xiong, XIAO Peng.
Distribution and Pollution Assessment of Nutrient and
Heavy Metals in Surface Sediments from Changdang Lake[J].China Rural Water and Hydropower, 2019(11): 115-118
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