Harbin city wetland safety analysis and countermeasures

摘要

Urban wetland ecosystems play in the city to maintain ecosystem equilibrium, wetland ecosystems in maintaining the safety of the ecological functions of wetlands play a huge role. Articles by SPSS statistical software, using factor analysis method and clustering analysis method to select a number of indicators before and after the Songhua River pollution incident on the North Pine wetlands were studied. The results show that: the highest level of ecological security in the eastern region, the worst safety in the western region. Songhua River pollution incident, the best scores of the Eastern biological factors; Eastern stability of the strongest water pollution incident; loose the safety of northern wetlands in water pollution after a downward trend. That pollution directly affects the safety of urban wetland.