Modeling symbiotic biological nitrogen fixation in grain legumes globally with LPJ-GUESS (v4.0, r10285)
-
Published:2022-01-28
Issue:2
Volume:15
Page:815-839
-
ISSN:1991-9603
-
Container-title:Geoscientific Model Development
-
language:en
-
Short-container-title:Geosci. Model Dev.
Author:
Ma JianyongORCID, Olin Stefan, Anthoni PeterORCID, Rabin Sam S.ORCID, Bayer Anita D., Nyawira Sylvia S., Arneth AlmutORCID
Abstract
Abstract. Biological nitrogen fixation (BNF) from grain legumes is of
significant importance in global agricultural ecosystems. Crops with BNF
capability are expected to support the need to increase food production
while reducing nitrogen (N) fertilizer input for agricultural
sustainability, but quantification of N fixing rates and BNF crop yields
remains inadequate on a global scale. Here we incorporate two legume crops
(soybean and faba bean) with BNF into a dynamic vegetation model LPJ-GUESS
(Lund–Potsdam–Jena General Ecosystem Simulator). The performance of this new
implementation is evaluated against observations from a range of water and N
management trials. LPJ-GUESS generally captures the observed response to
these management practices for legume biomass production, soil N uptake, and N
fixation, despite some deviations from observations in some cases. Globally,
simulated BNF is dominated by soil moisture and temperature, as well as N
fertilizer addition. Annual inputs through BNF are modeled to be
11.6±2.2 Tg N for soybean and 5.6±1.0 Tg N for all pulses,
with a total fixation of 17.2±2.9 Tg N yr−1 for all grain
legumes during the period 1981–2016 on a global scale. Our estimates show
good agreement with some previous statistical estimates but are relatively
high compared to some estimates for pulses. This study highlights the
importance of accounting for legume N fixation process when modeling C–N
interactions in agricultural ecosystems, particularly when it comes to
accounting for the combined effects of climate and land-use change on the global
terrestrial N cycle.
Funder
Bundesministerium für Wirtschaftliche Zusammenarbeit und Entwicklung
Publisher
Copernicus GmbH
Reference132 articles.
1. Abu-shakra, S. S., Phillips, D. A., and Huffaker, R. C.: Nitrogen Fixation
and Delayed Leaf Senescence in Soybeans, Science, 199, 973–975, 1978. 2. Ainsworth, E. A. and Long, S. P.: What have we learned from 15 years of
free-air CO2 enrichment (FACE)? A meta-analytic review of the responses of
photosynthesis, canopy properties and plant production to rising CO2, New
Phytol., 165, 351–371, https://doi.org/10.1111/j.1469-8137.2004.01224.x, 2005. 3. Ainsworth, E. A., Rogers, A., Leakey, A. D. B., Heady, L. E., Gibon, Y.,
Stitt, M., and Schurr, U.: Does elevated atmospheric [CO2] alter diurnal C
uptake and the balance of C and N metabolites in growing and fully expanded
soybean leaves?, J. Exp. Bot., 58, 579–591, https://doi.org/10.1093/jxb/erl233, 2007. 4. Becker, M., Ladha, J. K., and Ali, M.: Green manure technology: Potential,
usage, and limitations. A case study for lowland rice, Plant Soil, 174,
181–194, 1995. 5. Boote, K. J., Mínguez, M. I., and Sau, F.: Adapting the CROPGRO legume
model to simulate growth of faba bean, Agron. J., 94, 743–756,
https://doi.org/10.2134/agronj2002.7430, 2002.
Cited by
12 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|