Cited by 105Soil Carbon and Nitrogen DynamicsAgricultural Science and FertilizationSoil and Water Nutrient Dynamics

An estimate of greenhouse gas (N2O and CO2) mitigation potential under various scenarios of nitrogen use efficiency in Chinese croplands

HUANG, YAO, TANG, YONGHUA·2010·Global Change Biology

Abstract

Abstract It is well recognized that improving nitrogen use efficiency (NUE) can directly reduce nitrous oxide (N2O) emission in cropland and indirectly reduce carbon dioxide (CO2) release from nitrogen (N) production, while such a reduction has not been well quantified in China. We estimated the greenhouse gas (GHG; N2O and CO2) mitigation potential (MP) from Chinese cropland and its regional distribution by quantifying NUE and determining the amount of over‐applied synthetic N under various scenarios of NUE. We estimated that synthetic NUE in the late 1990s was 31±11% (mean±SD) for rice, 33±13% for wheat, and 31±11% for maize cultivation. Improving NUE to 50% could cut 6.6 Tg of synthetic N use per year, accounting for 41% of the total used. As a result of this reduction, the direct N2O emission from croplands together with CO2 emission from the industrial production and transport of synthetic N could be reduced by 39%, equivalent to 60 Tg CO2 yr−1. The MP was probably underestimated because organic N supply was not taken into account when estimating NUE. It was concluded that improving N management can greatly reduce GHG (N2O and CO2) emissions in Chinese croplands, and mitigation in the Jiangsu, Henan, Shandong, Sichuan, Hubei, Anhui, and Hebei provinces should be given priority.

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Crossref · 10.1111/j.1365-2486.2010.02187.x

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Authors
HUANG, Y., & TANG, Y.
Affiliations
Nanjing Agricultural University (CN)
Venue
Global Change Biology
Publisher
Wiley
Published
2010-01-20
Volume
16
Issue
11
Pages
2958-2970
ISSN
  • 1354-1013 (ISSN-L)
  • 1365-2486
OpenAlex
W1841961953
Cited by
105
References
48
Citations by year
2026: 1 · 2025: 3 · 2024: 4 · 2023: 7 · 2022: 14 · 2021: 3 · 2020: 9 · 2019: 9 · 2018: 6 · 2017: 6 · 2016: 9 · 2015: 8 · 2014: 6 · 2013: 4 · 2012: 8
FWCI
10.52
Type
journal article
Language
en
Open access
closed
Locations
Global Change Biology (publishedVersion)
Funders
  • China Agricultural University
  • Chinese Academy of Sciences
  • Chinese Academy of Agricultural Sciences
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
  • Physical Sciences › Environmental Science › Environmental Chemistry › Soil and Water Nutrient Dynamics
Keywords
nitrogen use efficiency, nitrous oxide emissions, greenhouse gas emissions reduction, synthetic nitrogen fertilizers, crop nitrogen management, rice, wheat, maize

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