Nitrogen deposition in agroecosystems in the Beijing area

There is increasing interest in nitrogen (N) deposition because of its importance as a nutrient resource and a component of acid deposition within the overall global N cycle. Precipitation samples were collected for periods varying from 6 months to 6 years (1998–2004) from seven sites in the Beijing...

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Veröffentlicht in:Agriculture, ecosystems & environment ecosystems & environment, 2006-04, Vol.113 (1), p.370-377
Hauptverfasser: Liu, Xuejun, Ju, Xiaotang, Zhang, Ying, He, Chune, Kopsch, Jenny, Fusuo, Zhang
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container_start_page 370
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creator Liu, Xuejun
Ju, Xiaotang
Zhang, Ying
He, Chune
Kopsch, Jenny
Fusuo, Zhang
description There is increasing interest in nitrogen (N) deposition because of its importance as a nutrient resource and a component of acid deposition within the overall global N cycle. Precipitation samples were collected for periods varying from 6 months to 6 years (1998–2004) from seven sites in the Beijing area to determine the amount and seasonal distribution of N (bulk/wet) deposition. Bulk deposition of N ranged from 26.6 to 38.5 kg N ha −1 year −1 and averaged 30.6 kg N ha −1 year −1. Bulk deposition of NH 4–N was, on average, 2.1 times the NO 3–N deposition, suggesting that reduced N is the major form of N deposition in the study area. Concentrations of NH 4–N and NO 3–N in rainfall averaged 4.8 and 2.2 mg N L −1 and showed great temporal variation from month to month. A negative relationship between rainfall and NH 4–N or NO 3–N concentration in rainwater was observed by an exponential equation, indicating dilution of NH 4–N and NO 3–N with increasing precipitation. Bulk deposition of inorganic N occurred mainly from April to September (>80% of total bulk deposition), which was consistent with both the monthly distribution of precipitation and the times of fertilizer applications in local agricultural land. Wet-only deposition of inorganic N, however, was 8.3–8.4 kg N ha −1 lower than that of bulk deposition during similar periods in 2003 (June–November) and 2004 (April–November), suggesting the potential contribution of dry deposition to total N deposition in the Beijing area.
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Precipitation samples were collected for periods varying from 6 months to 6 years (1998–2004) from seven sites in the Beijing area to determine the amount and seasonal distribution of N (bulk/wet) deposition. Bulk deposition of N ranged from 26.6 to 38.5 kg N ha −1 year −1 and averaged 30.6 kg N ha −1 year −1. Bulk deposition of NH 4–N was, on average, 2.1 times the NO 3–N deposition, suggesting that reduced N is the major form of N deposition in the study area. Concentrations of NH 4–N and NO 3–N in rainfall averaged 4.8 and 2.2 mg N L −1 and showed great temporal variation from month to month. A negative relationship between rainfall and NH 4–N or NO 3–N concentration in rainwater was observed by an exponential equation, indicating dilution of NH 4–N and NO 3–N with increasing precipitation. 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Soil science and plant productions</subject><subject>ammonium nitrogen</subject><subject>Animal, plant and microbial ecology</subject><subject>Applied ecology</subject><subject>Atmospheric N deposition</subject><subject>biogeochemical cycles</subject><subject>Biological and medical sciences</subject><subject>dry deposition</subject><subject>Ecotoxicology, biological effects of pollution</subject><subject>equations</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agroecology</subject><subject>General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping</subject><subject>General agronomy. Plant production</subject><subject>Generalities. Agricultural and farming systems. 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Soil science and plant productions</topic><topic>ammonium nitrogen</topic><topic>Animal, plant and microbial ecology</topic><topic>Applied ecology</topic><topic>Atmospheric N deposition</topic><topic>biogeochemical cycles</topic><topic>Biological and medical sciences</topic><topic>dry deposition</topic><topic>Ecotoxicology, biological effects of pollution</topic><topic>equations</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agroecology</topic><topic>General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping</topic><topic>General agronomy. Plant production</topic><topic>Generalities. Agricultural and farming systems. Agricultural development</topic><topic>NH 4/NO 3 molar ratio</topic><topic>nitrate nitrogen</topic><topic>nitrogen</topic><topic>nitrogen fertilizers</topic><topic>plant nutrition</topic><topic>Precipitation</topic><topic>rain</topic><topic>seasonal variation</topic><topic>temporal variation</topic><topic>Terrestrial environment, soil, air</topic><topic>wet deposition</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Xuejun</creatorcontrib><creatorcontrib>Ju, Xiaotang</creatorcontrib><creatorcontrib>Zhang, Ying</creatorcontrib><creatorcontrib>He, Chune</creatorcontrib><creatorcontrib>Kopsch, Jenny</creatorcontrib><creatorcontrib>Fusuo, Zhang</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Agriculture, ecosystems &amp; environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Xuejun</au><au>Ju, Xiaotang</au><au>Zhang, Ying</au><au>He, Chune</au><au>Kopsch, Jenny</au><au>Fusuo, Zhang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nitrogen deposition in agroecosystems in the Beijing area</atitle><jtitle>Agriculture, ecosystems &amp; environment</jtitle><date>2006-04-01</date><risdate>2006</risdate><volume>113</volume><issue>1</issue><spage>370</spage><epage>377</epage><pages>370-377</pages><issn>0167-8809</issn><eissn>1873-2305</eissn><coden>AEENDO</coden><abstract>There is increasing interest in nitrogen (N) deposition because of its importance as a nutrient resource and a component of acid deposition within the overall global N cycle. 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source ScienceDirect Journals (5 years ago - present)
subjects agricultural land
Agroecosystems
Agronomy. Soil science and plant productions
ammonium nitrogen
Animal, plant and microbial ecology
Applied ecology
Atmospheric N deposition
biogeochemical cycles
Biological and medical sciences
dry deposition
Ecotoxicology, biological effects of pollution
equations
Fundamental and applied biological sciences. Psychology
General agroecology
General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping
General agronomy. Plant production
Generalities. Agricultural and farming systems. Agricultural development
NH 4/NO 3 molar ratio
nitrate nitrogen
nitrogen
nitrogen fertilizers
plant nutrition
Precipitation
rain
seasonal variation
temporal variation
Terrestrial environment, soil, air
wet deposition
title Nitrogen deposition in agroecosystems in the Beijing area
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