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The spatiotemporal dynamic changes in net anthropogenic nitrogen input (NANI) in Quzhou from 2003 to 2022
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Yu-hang YANG1, Yu-guo HAN1, 2, 3, *, Xiao-lin ZHANG4, Wei-li DUAN1
China Environmental Science | 2025, 45(4) : 2075 - 2085
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China Environmental Science | 2025, 45(4): 2075-2085
• Environmental Ecology •
The spatiotemporal dynamic changes in net anthropogenic nitrogen input (NANI) in Quzhou from 2003 to 2022
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Yu-hang YANG1, Yu-guo HAN1, 2, 3, *, Xiao-lin ZHANG4, Wei-li DUAN1
Affiliations
  • 1.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
  • 2.Forest Ecosystem Studies, National Observation and Research Station, Linfen 042200, China
  • 3.Key Laboratory of National Forestry and Grassland Administration on Soil and Water Conservation, Beijing 100083, China
  • 4.Quzhou Wuxi River Drinking Water Source Protection Management Center, Quzhou 324003, China
Published: 2025-04-20
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The Net Anthropogenic Nitrogen Input (NANI) model was utilized to estimate nitrogen inputs to Quzhou for the period from 2003 to 2022, and its spatial and temporal patterns, variations in components, and determining factors were examined. The results indicated that the average NANI for Quzhou over the past two decades was 12925kg/(km2·a), with a peak of 15698kg/(km2·a)in 2011. The spatial distribution was found to demonstrate an east-high and west-low pattern, which was consistent with land-use configurations. The predominant component of NANI was nitrogen fertilizer, which contributed 27% to 41%, followed by net nitrogen input from food/feed at 22% to 42%, atmospheric nitrogen deposition at 21% to 33%, and nitrogen fixation at 7% to 11%. The variations in NANI were primarily driven by nitrogen fertilizer application between 2003 and 2008, food/feed inputs between 2009 and 2014, and atmospheric deposition in recent years. Strategies were proposed to mitigate NANI, including promoting new energy vehicles, reducing nitrogen fertilizer application to align with standards of agriculturally advanced nations, and regulating livestock and poultry farming to match local demand. It was anticipated that these measures would decrease NANI by approximately 833, 893, and 896kg/(km2·a), respectively, achieving a cumulative reduction of about 2622kg/(km2·a), positioning it among the lower levels globally.

net anthropogenic nitrogen input (NANI)  /  Qujiang River Basin  /  nitrogen deposition  /  mitigation strategy
Yu-hang YANG, Yu-guo HAN, Xiao-lin ZHANG, Wei-li DUAN. The spatiotemporal dynamic changes in net anthropogenic nitrogen input (NANI) in Quzhou from 2003 to 2022[J]. China Environmental Science, 2025 , 45 (4) : 2075 -2085 .
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Article Info
  • Receive Date：2024-09-24
  • Online Date：2026-03-19
  • Published：2025-04-20
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  • Received：2024-09-24
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Affiliations
    1.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
    2.Forest Ecosystem Studies, National Observation and Research Station, Linfen 042200, China
    3.Key Laboratory of National Forestry and Grassland Administration on Soil and Water Conservation, Beijing 100083, China
    4.Quzhou Wuxi River Drinking Water Source Protection Management Center, Quzhou 324003, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
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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