On the physico-chemical monitoring and evaluation of the water environment for lenok and burbot aquatic germplasm resources of Pangu River reserve,Heilongjiang,China
The article takes it as its target to report its authors'investigation and physico-chemical monitoring and evaluation results of the water environment situation for lenok and burbot aquatic germplasm resources of Pangu River reserve, Heilongjiang, China. As is known, the natural reserve of Pangu River aquatic germplasm resources is one of the famous natural reserves for cold-water fish growing and breeding.Needless to say, it is of great significance to pursue its water-quality changing situations and protect its water quality from being polluted and contaminated through effective protection and observation.It is just for this goal that there is a great need for us to master the skills to test the physico-chemical properties of the river water.In this article, we have tested and analyzed over 30 indexes of the water and 13 metal elements existing in the sediments and fishes through on-site investigations.According to the second standard national surface water protection regulation, we have assessed the quality of the river water in accordance with the comprehensive evaluation indexes and the evaluation formula for the organic pollutants.The results of our investigation and analysis indicate that Pangu River, which is located in the north of Tahe County of Daxinganling area, with its geographic situations in the coordinates 52°09'-53°22'N, 123°19'-124°49'E.Our investigation and analysis results show that the water quality remains clean and clear, high and pure in the original state.The comprehensive evaluation indexes show that the water quality comprehensive evaluation index is 0.27 and the organic pollution comprehensive evaluation index is 0.96, which suggests that the water qualities are in full conformity with the state water protection standard level.The reach can provide us with a good condition for the growth and reproduction of cold-water fishes, such as lenok and burbot.