Dynamics and ecological risk assessment of chromophoric dissolved organic matter in the Yinma River Watershed: Rivers, reservoirs, and urban waters.

摘要: The extensive use of a geographic information system (GIS) and remote sensing in ecological risk assessment from spatiotemporal perspective complements environment management. Chromophoric dissolved organic matter (CDOM), which is complex mixture that can be estimated via sensing, carries produces carcinogenic disinfection by-products pollutants various aquatic environments. This paper reports the first assessment, was conducted 2016, CDOM Yinma River watershed including riverine waters, reservoir urban waters. Referring to formation theory natural disaster, entropy evaluation method DPSIR (driving force-pressure-state-impact-response) framework were coupled establish hazard vulnerability index with multisource data, i.e., meteorological, experimental, socioeconomic this watershed. indicator contains 23 indicators respect sensitivity, pressure, self-resilience. characteristics absorption parameters different waters showed higher aromatic content molecular weights May because increased terrestrial inputs. results indicated overall ecosystem study area focused extremely, heavily, moderately vulnerable regions. objectively reflect regional demonstrate potential over traditional chemical measurements.