Calibration of a simple method for determining ammonia volatilization in the field - Comparative measurements in Henan Province, China

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • A. Pacholski
  • Gui-Xin Cai
  • Rolf Nieder
  • Julia Richter
  • X.-H. Fan
  • Z. Zhu
  • Marco Roelcke
The determination of ammonia volatilization with sufficient spatial and temporal resolution requires a simple and versatile in situ measurement technique, particularly in developing countries. Therefore, a simple chamber method for determining ammonia (NH3) volatilization in the field (Dräger-Tube Method; DTM) was calibrated by comparison with simultaneous measurements with a micrometeorological Integrated Horizontal Flux (IHF) method. Five field experiments were conducted following urea fertilization on summer maize and winter wheat plots (1998-1999) at Fengqiu Experimental Station, Central China. The simplicity of the chamber method allowed for measurements to be carried out by trained farmers. The measurements with both methods yielded very similar patterns of NH3 fluxes and similar differences between fertilization treatments. Cumulative NH3 losses determined by the IHF method ranged from 14.6 to 47.9% and from 0.6 to 17.9% of urea-N applied for surface broadcast and incorporated fertilization, respectively. As expected, cumulated NH3 losses were underestimated by the DTM as compared to the IHF by about one order of magnitude. A calibration equation was calculated by multiple linear regression which included NH3 flux data as well as temperature and wind speed values. The calibration model yielded a modelling efficiency c 2 of 0.86 resulting in an average estimation error of cumulative NH3 losses of 17%. The equation was validated by comparison of IHF measurements and DTM fluxes not considered in the derivation of the calibration formula. The calibration approach can be used under similar meteorological and field conditions irrespective of the soil characteristics or type of N fertilizer applied. © Springer 2006.
Original languageEnglish
JournalNutrient Cycling in Agroecosystems
Volume74
Issue number3
Pages (from-to)259-273
Number of pages15
ISSN1385-1314
DOIs
Publication statusPublished - 01.03.2006
Externally publishedYes

Bibliographical note

Funding Information:
This study was supported by the Deutsche For-schungsgemeinschaft (DFG Ri 269/42, Ni 311/3), the Gesellschaft für Technische Zusammenarbeit (GTZ VN 810 12 840) and the National Natural Science Foundation of China (NSFC). The authors particularly like to thank Dr. Hong Ding, Dr. Shunyao Zhuang and Mr. Yu Peng for their help and support during the measurements and Mr. Qiao Jiang, the manager of Fengqiu Experimental Station.

    Research areas

  • Management studies
  • Ammonia partial pressure, Chamber method, Integrated Horizontal Flux method, Nitrogen loss, Urea

Recently viewed

Publications

  1. Friction riveting of 3D printed polyamide 6 with AA 6056-T6
  2. New methods for the analysis of links between international firm activities and firm performance
  3. A transfer operator based numerical investigation of coherent structures in three-dimensional Southern ocean circulation
  4. Optimization and Validation of an LC Method for the Determination of Cefdinir in Dosage Form and Human Urine
  5. Zur Methodologie der ‘Fehleranalyse’ in der mathematikdidaktischen Forschung
  6. Case study on delivery time determination using a machine learning approach in small batch production companies
  7. A Robust Decoupling Estimator to Indentify Electrical Parameters for Three-Phase Permanent Magnet Synchronous Motors
  8. Self-regulated learning and self assessment in online mathematics bridging courses
  9. Anticipated imitation of multiple agents
  10. Increasing personal initiative in small business managers or owners leads to entrepreneurial success: A theory-based controlled randomized field intervention for evidence-based management
  11. Effects of tree diversity on canopy space occupation vary with tree size and canopy space definition in a mature broad-leaved forest
  12. Environmental performance, carbon performance and earnings management
  13. Dimension theoretical properties of generalized Baker's transformations
  14. Cascade MIMO P-PID Controllers Applied in an Over-actuated Quadrotor Tilt-Rotor
  15. Trade Dynamics, Trade Costs and Market Size: First Evidence from the Exporter and Importer Dynamics Database for Germany
  16. Motion-decoupled internal force control in grasping with visco-elastic contacts
  17. Nitrogen uptake by grassland communities
  18. Deliberative mapping of ecosystem services within and around Doñana National Park (SW Spain) in relation to land use change
  19. The role of the situation model in mathematical modelling
  20. Investigation of the deformation behavior of Fe-3%Si sheet metal with large grains via crystal plasticity and finite-element modeling
  21. Effects of Soil Properties, Temperature and Disturbance on Diversity and Functional Composition of Plant Communities Along a Steep Elevational Gradient on Tenerife
  22. PyFin-sentiment
  23. Green deserts, but not always
  24. Evidence on copula-based double-hurdle models with flexible margins
  25. Deep Rolling for Tailoring Residual Stresses of AA2024 Sheet Metals
  26. User experience predicts the effectiveness of a gamified recovery app
  27. A PD Fuzzy Control of a Nonholonomic Car-Like Robot for Drive Assistant Systems
  28. Land-use change differentially affects endemic, forest andopen-land butterflies in Madagascar
  29. Modeling of Friction-Induced Vibrations during Tightening of Bolted Joints