Analysis of DOM Distribution Characteristics and Environmental Response Capacity in Different Areas of Urban Water

School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China

^* Corresponding author: 13908692990@163.com

Abstract

To accurately define the conditions of urban water bodies, research was conducted on the distribution characteristics and environmental responsiveness of DOM in different areas of urban water bodies. Water samples were collected from the severely polluted Zaohe River, Chanhe River, and Bahe River in Xi'an, including surface water and wastewater discharged from sewage outlets on these rivers. After processing the water samples, established measurement techniques were employed to analyze the DOM in the water samples. Taking Beijing as an example, remote sensing imagery was used to extract surface temperature and water body information within the study area, combined with land use and land cover data, to analyze the environmental pattern characteristics of urban water bodies. By selecting the summer period, during which the water bodies exhibit significant cooling effects, typical water areas were divided into surface and linear parts, and high-resolution imagery and fixed-point measured data were used to further explore the characteristics of urban water bodies and their environmental responsiveness.