Fishery ecological environment status in Tianjin urban section of the main stream of Haihe River
To understand the ecological environment quality in Tianjin urban section of the main stream of the Haihe River,pH value,permanganate index,total nitrogen,total phosphorus,petroleum,dissolved oxygen,copper,zinc,and arsenic in the water area were continuously monitored from 2016 to 2021.The survey re-sults showed that indicators such as total nitrogen,total phosphorus,and permanganate index in July were in-ferior to those in May and September.Overall,from 2016 to 2021,the total nitrogen,total phosphorus,per-manganate index,copper,zinc,arsenic and other indicators decreased significantly,and the fishery ecological environment was improved to a certain extent.
main stream of Haihe Riverfishery ecologyenvironment
NETL
NSTL
万方数据
