Study of coastal water zone ecosystem health in Zhejiang Province based on remote sensing data and GIS

摘要: The coastal ecosystem health assessment is a field of increasing importance. In this paper, preliminary in Zhejiang water zone was made, mainly based on remote sensing data and GIS technique. Its spatial quantitative evaluation facilitated by the progress technique development. Firstly, human activities, hydrology problems study area were discussed analyzed. Secondly, from 4 aspects stress, physical, chemical biological responses to anthropogenic activities natural several indicators such as transparency (Secchi Disk Depth, SDD), suspended substance concentration, dissolved inorganic nitrogen, active phosphate, chlorophyll, harmful algae bloom, well distribution sewage, sea lanes port employed. Thirdly, Analytic Hierarchical Process used for indicator weight calculation, criteria established according integrative analysis national quality criteria, similar research other places or inherent properties. results indicated that 2005 2007 value Province unhealthy needs ecological restoration intervention.