|Table of Contents|

Synergistic Relationship Between Runoff Control Rate and Pollutant Load Reduction Rate at Different Spatial Scales—Taking Xixian New District in Xi'an City of Shaanxi Province, China as an Example(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2025年第03期
Page:
526-536
Research Field:
黄河流域生态保护和高质量发展专刊(上)
Publishing date:

Info

Title:
Synergistic Relationship Between Runoff Control Rate and Pollutant Load Reduction Rate at Different Spatial Scales—Taking Xixian New District in Xi'an City of Shaanxi Province, China as an Example
Author(s):
WANG Zheng-fa1;  LIU Kun-rang2;  HOU Jing-ming2*;  LIU Li-jun2;  PING Yang1;  CHEN Chen-yu1;  ZHANG Zhen-zhou1;  XU Hao1;  CHEN Jie1
(1.PowerChina Eco-environmental Group Co.,Ltd.,Shenzhen 518102,Guangdong,China; 2.State Key Laboratory of Water Engineering Ecology and Environment in Arid Area,Xi'an University of Technology,Xi'an 710048,Shaanxi,China)
Keywords:
non-point source pollution;  spatial scale;  fitting function;  cooperation coefficient;  SWMM model;  runoff control;  pollution load
PACS:
X52
DOI:
10.19814/j.jese.2024.09049
Abstract:
Taking Fengxi new city and Tianfuheyuan community in Xixian new district of Xi'an city, Shaanxi province as examples, the calculation model of rainfall runoff and non-point source pollution load was constructed based on storm water management model(SWMM), and 45 rainfall conditions under 9 rainfall recurrence periods and 5 rainfall peak coefficients were designed; the synergistic relationships between runoff control rate and pollution load reduction rate at different spatial scales were analyzed. The results show that the runoff control rate and pollution load reduction rate of Fengxi new city and Tianfuheyuan community show a decreasing trend under the condition of rainfall intensity and precipitation in different rainfall recurrence periods, and the decrease rate is most significant when the rainfall peak coefficient is 0.5; under the condition of different rainfall peak coefficients, the runoff control rate and the load reduction rate of the four pollutants in Fengxi new city and Tianfuheyuan community have basically the same changes with the rainfall recurrence period, and the two also maintain a good linear fitting relationship at different spatial scales, and the fitting curves are highly similar, with the cooperation coefficient greater than 0.931; there is a high degree of quantitative synergistic relationship between runoff control rate and pollutant load reduction rate at different spatial scales.

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Last Update: 2025-06-20