Grasslands

Dóra Hidy, Attila Machon, L. Haszpra, Z. Nagy, Krisztina Pintér, Galina Churkina, Balázs Grosz, L. Horváth, Z. Barcza

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

In this chapter, we examine the effects of site-specific environmental conditions and management activities on water, carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) fluxes of Hungarian grasslands using two process-based ecosystem models. Biome-BGC is used to simulate the CO2 budget, while DNDC is applied to simulate the CH4 and N2O budgets. Biome-BGC was originally developed to simulate the biogeochemical cycles of natural biomes; therefore,-extension of the model source code was needed to simulate management practices. Besides implementing management modules, the soil water and phenology submodels of Biome-BGC were developed. After the development and extension, the model was calibrated using a Bayesian approach by a novel iterative calibration method. DNDC model consists of two components: the first predicts soil temperature, moisture, alkalinity (pH), soil redox potential, and substrate concentration profiles based on ecological drivers; the other component calculates ammonia, nitrogen monoxide, nitrous oxide, and methane fluxes based on soil environmental conditions. DNDC handles several types of management activities. The simulation results of the models were validated using measured carbon dioxide and latent heat flux data from three Hungarian measurement sites, and also using N 2O and CH4 fluxes measured over Hungarian grasslands. The calibrated Biome-BGC model was used to simulate the long-term effect of different management practices.

Original languageEnglish
Title of host publicationAtmospheric Greenhouse Gases: The Hungarian Perspective
PublisherSpringer Netherlands
Pages229-251
Number of pages23
ISBN (Print)9789048199495
DOIs
Publication statusPublished - 2011

Fingerprint

biome
grassland
nitrous oxide
management practice
carbon dioxide
methane
environmental conditions
biogeochemical cycle
latent heat flux
redox potential
phenology
environmental management
soil temperature
alkalinity
ammonia
soil
soil water
moisture
calibration
substrate

Keywords

  • Bayesian calibration
  • grassland
  • management activities
  • Process-based modeling

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Hidy, D., Machon, A., Haszpra, L., Nagy, Z., Pintér, K., Churkina, G., ... Barcza, Z. (2011). Grasslands. In Atmospheric Greenhouse Gases: The Hungarian Perspective (pp. 229-251). Springer Netherlands. https://doi.org/10.1007/978-90-481-9950-1_10

Grasslands. / Hidy, Dóra; Machon, Attila; Haszpra, L.; Nagy, Z.; Pintér, Krisztina; Churkina, Galina; Grosz, Balázs; Horváth, L.; Barcza, Z.

Atmospheric Greenhouse Gases: The Hungarian Perspective. Springer Netherlands, 2011. p. 229-251.

Research output: Chapter in Book/Report/Conference proceedingChapter

Hidy, D, Machon, A, Haszpra, L, Nagy, Z, Pintér, K, Churkina, G, Grosz, B, Horváth, L & Barcza, Z 2011, Grasslands. in Atmospheric Greenhouse Gases: The Hungarian Perspective. Springer Netherlands, pp. 229-251. https://doi.org/10.1007/978-90-481-9950-1_10
Hidy D, Machon A, Haszpra L, Nagy Z, Pintér K, Churkina G et al. Grasslands. In Atmospheric Greenhouse Gases: The Hungarian Perspective. Springer Netherlands. 2011. p. 229-251 https://doi.org/10.1007/978-90-481-9950-1_10
Hidy, Dóra ; Machon, Attila ; Haszpra, L. ; Nagy, Z. ; Pintér, Krisztina ; Churkina, Galina ; Grosz, Balázs ; Horváth, L. ; Barcza, Z. / Grasslands. Atmospheric Greenhouse Gases: The Hungarian Perspective. Springer Netherlands, 2011. pp. 229-251
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