On the basis of field investigation and laboratory analysis of Xiangjiang river,a survey was conducted about the contamination levels of soil heavy metals with different forms（i.e.As,Cd,Cu,Zn,Ni and Pb）,water quality（TN,TP,BOD5 and CODcr）and phytoplankton diversity in different water seasons（average season,flood season,and dry season）of tourism development zone and controlled zone（CK）,and the relationships between phytoplankton diversity and environmental factors（soil and water quality）in both zones were studied by the method of redun...
