首页|Mechanism of nitrogen loss driven by soil and water erosion in water source areas

Mechanism of nitrogen loss driven by soil and water erosion in water source areas

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Nitrogen(N)present in drinking water as dis-solved nitrates can directly affect people's health,making it important to control N pollution in water source areas.N pollution caused by agricultural fertilizers can be con-trolled by reducing the amount of fertilizer applied,but pol-lution caused by soil and water erosion in hilly areas can only be controlled by conservation forests.The catchment area around Fushi Reservoir was selected as a test site and mechanisms of N loss from a vertical spatial perspective through field observations were determined.The main N losses occurred from June to September,accounting for 85.9-95.9％of the annual loss,with the losses in June and July accounting for 46.0％of the total,and in August and September for 41.9％.The N leakage from the water source area was effectively reduced by 38.2％through the optimi-zation of the stand structure of the conservation forests.Establishing well-structured forests for water conservation is crucial to ensure the security of drinking water.This pre-liminary research lays the foundation for revealing then loss mechanisms in water source areas and improving the control of non-point source pollution in these areas.

Water source areasNitrogen lossNon-point source pollutionWater qualitySurface runoff

Rongjia Wang、Jianfeng Zhang、Chunju Cai、Shufeng Wang

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State Key Laboratory of Subtropical Silviculture,Zhejiang A&F University,Hangzhou 311300,People's Republic of China

Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou 311400,People's Republic of China

College of Forestry and Biotechnology,Zhejiang A&F University,Hangzhou 311300,People's Republic of China

Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions,Zhejiang A&F University,Hangzhou 311300,People's Republic of China

Sanya Research Base of the International Centre for Bamboo and Rattan,Sanya 572000,People's Republic of China

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Zhejiang A&F UniversityKey R&D Program of Zhejiang ProvinceInternational Centre for Bamboo and Rattan

2022LFR0832021C020381632021006

2023

10.1007/s11676-023-01640-3

林业研究(英文版)
东北林业大学,中国生态学学会

林业研究(英文版)

CSTPCDCSCD北大核心EI
影响因子：0.365
ISSN：1007-662X
年,卷(期)：2023.34(6)
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