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Spatiotemporal Distribution Characteristics and Key Sources of Nitrogen in Yihe River Basin Based on SWAT Model
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Guo-rui ZHANG1a, 1b, Cheng-gao LIU2, Yu-shan JIA2, Ting-feng WU3, Chuan-guo YANG1a, 1b
Water Resources and Power | 2023, 41(8) : 66 - 69
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Water Resources and Power | 2023, 41(8): 66-69
HYDROLOGY, WATER RESOURCES AND ENVIRONMENT
Spatiotemporal Distribution Characteristics and Key Sources of Nitrogen in Yihe River Basin Based on SWAT Model
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Guo-rui ZHANG1a, 1b, Cheng-gao LIU2, Yu-shan JIA2, Ting-feng WU3, Chuan-guo YANG1a, 1b
Affiliations
  • 1a.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
  • 1b.State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
  • 2.Shilianghe Reservoir Management Office, Lianyungang 222300, China
  • 3.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjjing 210008, China
Published: 2023-08-25 doi: 10.20040/j.cnki.1000-7709.2023.20221707
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In order to analyze the Nitrogen pollution status and changes in the Yihe River Basin, a SWAT model was established, and the model was calibrated based on the monitoring data of Linyi Station. Its temporal and spatial distribution characteristics were analyzed and the key pollution sources were identified. The results show that the SWAT model has good applicability in the simulation research of runoff and pollution in the Yihe River Basin; The pollution is mainly concentrated in the flood season from July to September, and the ammonia nitrogen and total nitrogen load account for 73.34% and 81.58% of the whole year; The sub-basin in the southwest and close to the water system in the northeast are the main source area of pollution; The main sources of pollution in the basin are sewage discharge, agricultural fertilization and soil loss. Taking Nitrogen fertilizer reduction, returning farmland to forest and comprehensive management measures for the changes can effectively reduce the discharge of pollution load.

solute simulation  /  SWAT model  /  Nitrogen pollution load  /  key sources  /  Yihe River Basin
Guo-rui ZHANG, Cheng-gao LIU, Yu-shan JIA, Ting-feng WU, Chuan-guo YANG. Spatiotemporal Distribution Characteristics and Key Sources of Nitrogen in Yihe River Basin Based on SWAT Model[J]. Water Resources and Power, 2023 , 41 (8) : 66 -69 . DOI: 10.20040/j.cnki.1000-7709.2023.20221707
Year 2023 volume 41 Issue 8
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221707
  • Receive Date:2022-08-17
  • Online Date:2026-01-28
  • Published:2023-08-25
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History
  • Received:2022-08-17
  • Revised:2022-09-26
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Affiliations
    1a.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
    1b.State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
    2.Shilianghe Reservoir Management Office, Lianyungang 222300, China
    3.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjjing 210008, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20221707
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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