The Research on the Impacts of Human Activities on the Evolution of Water Quality in Jiuzhaigou Natural Reserve

摘要

The research assesses the water quality to tourism development, shows the complex and dynamic relationships between humans and the natural environment. In total, 55 sets of data were detected in 11 samples, with the index of negative oxygen ion, oxygen ion, dissolved oxygen, PH, salinity, turbidity, electrolytic rate, total nitrogen, total phosphorus. The results show Water is weak acid and salinity, turbidity is low, with low degree of contaminated, total nitrogen content in 1.13 μg/mL the following, the total phosphorus content in 0.14μg/mL the following. In the air over sampling points negative oxygen ion are more than 1000 per cubic centimeter, belongs to the pure and fresh air. Water quality of Zharu valley is much better than other valleys, The difference between samples quality is obvious in the other three valleys. According to the assumptions, human activities didn't affect surrounding water quality apparently.