ANALYSIS OF DIFFUSE POLLUTION CHARACTERISTICS IN AGRICULTURAL SPACE IN XI'AN BASED ON DPeRS MODEL

ZHANG Xiuhong; LI Renge; ZHAO Yueshuai; GAO Linting; NING Bo

doi:10.13205/j.hjgc.202312017

Volume 41 Issue 12

Dec. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(12): 142-149

DU Ying'en, HOU Jingming, CHAI Jie, BAI Guangbi, LI Xuan, ZHANG Hongfang, ZHANG Zhaoan, CHEN Guangzhao, LI Bingyao. TEMPORAL VARIATION CHARACTERISTICS OF PRECIPITATION EXTREMES IN XI'AN[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 41-46. doi: 10.13205/j.hjgc.202211006

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ZHANG Xiuhong, LI Renge, ZHAO Yueshuai, GAO Linting, NING Bo. ANALYSIS OF DIFFUSE POLLUTION CHARACTERISTICS IN AGRICULTURAL SPACE IN XI'AN BASED ON DPeRS MODEL[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(12): 142-149. doi: 10.13205/j.hjgc.202312017

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ANALYSIS OF DIFFUSE POLLUTION CHARACTERISTICS IN AGRICULTURAL SPACE IN XI'AN BASED ON DPeRS MODEL

doi: 10.13205/j.hjgc.202312017

1. Shaanxi Huadi Survey and Design Consulting Co., Ltd., Xi'an 710018, China;
2. Xi'an Bureau of Natural Resources and Planning, Xi'an 710018, China

Received Date: 2023-03-07
Available Online: 2024-03-08

Abstract

Abstract

The diffuse pollution estimation with remote sensing (DPeRS) model was conducted to quantify the agricultural spatial diffuse pollution load discharge and river inflow in Xi'an in 2020. The spatial distribution characteristics of surface source pollution were analyzed, the main types of non-point source pollution in the agricultural space of Xi'an were identified, and the targeted prevention and control suggestions for non-point source pollution were also provided. The results showed that the surplus of nitrogen and phosphorus in farmland of agricultural space in Xi'an was large and widely distributed. There were significant differences in the spatial distribution of non-point source pollution emissions. High-value areas were distributed in the east part of Yanliang District, the east part of Gaoling District, the plain area of Zhouzhi County and Chang'an District, and the Lishan hilly area in Lintong District and Lantian County. The nitrogen non-point source pollution is main affected by rural life, and the phosphorus non-point source pollution is mainly affected by soil erosion. The spatial distribution of nitrogen and phosphorus non-point source pollution into the river in agricultural space is similar, but the content is quite different. The high-value areas are located in the east part of Yanliang District, the middle and north part of Lintong District, the Lishan Mountain area of Lantian County, the central and eastern plain area of Zhouzhi County, the shallow mountain area of Qinling Mountains and both sides of some valley roads.
- diffuse pollution,
- DPeRS model,
- agricultural space,
- Xi'an

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References

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