Application of the AquaCrop model to simulate the biomass of Miscanthus x giganteus under different nutrient supply conditions
Апстракт
There are conflicting opinions about the need to fertilize Miscanthus and, also, the question has been raised whether Miscanthus should be irrigated, especially if water resources are limited. Crop growth modeling can help answer such questions. In this article the FAO AquaCrop water-driven model was selected to simulate Miscanthus biomass under different nutrient and water supply conditions. The article reports the outcomes of 6-year experiments with Miscanthus on two locations in Serbia: Zemun, where three fertilizer treatments were applied (N-l - 100kgha(-1), N-opt 50kgha(-1) and N-f nonfertilized), and Ralja, where only N-l 100kgha(-1) was applied. Model calibration focused on the measured data (root depth, crop phenology, and the above-ground biomass by year of growth. Calibration results showed a very good match between measured and simulated values. The largest and only significant difference was noted in 2008, when the crop was establishing and exhibited uneven radication. The ...simulation results for the next 5years showed a variance from -4 to 5.7%, believed to be a very good match. A high coefficient of determination (R-2=0.995) and high Willmott index of agreement (0.998) were also indicative of a good match between simulated and recorded biomass yields. The measured and simulated results for validated datasets at both locations were good. The average RMSE was 2.89 Mgha(-1); when compared to the deviations noted at the test site itself, it was apparent that they were smaller in all the years of research except the first year. The index of agreement was 0.97 and the coefficient of determination R-2 0.947. The AquaCrop model can be used with a high degree of reliability in strategic planning of Miscanthus cultivation in new areas, under different nutrient and water supply and local weather and soil conditions.
Кључне речи:
AquaCrop / biomass / Miscanthus x giganteus / modeling / nutrient stress / water stressИзвор:
Global Change Biology Bioenergy, 2015, 7, 6, 1203-1210Издавач:
- Wiley, Hoboken
Финансирање / пројекти:
- Оцена утицаја климатских промена на водне ресурсе Србије (RS-MESTD-Technological Development (TD or TR)-37005)
DOI: 10.1111/gcbb.12206
ISSN: 1757-1693
WoS: 000362834200002
Scopus: 2-s2.0-84937498931
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Stričević, Ružica AU - Dzeletović, Zeljko AU - Djurović, Nevenka AU - Ćosić, Marija PY - 2015 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/3675 AB - There are conflicting opinions about the need to fertilize Miscanthus and, also, the question has been raised whether Miscanthus should be irrigated, especially if water resources are limited. Crop growth modeling can help answer such questions. In this article the FAO AquaCrop water-driven model was selected to simulate Miscanthus biomass under different nutrient and water supply conditions. The article reports the outcomes of 6-year experiments with Miscanthus on two locations in Serbia: Zemun, where three fertilizer treatments were applied (N-l - 100kgha(-1), N-opt 50kgha(-1) and N-f nonfertilized), and Ralja, where only N-l 100kgha(-1) was applied. Model calibration focused on the measured data (root depth, crop phenology, and the above-ground biomass by year of growth. Calibration results showed a very good match between measured and simulated values. The largest and only significant difference was noted in 2008, when the crop was establishing and exhibited uneven radication. The simulation results for the next 5years showed a variance from -4 to 5.7%, believed to be a very good match. A high coefficient of determination (R-2=0.995) and high Willmott index of agreement (0.998) were also indicative of a good match between simulated and recorded biomass yields. The measured and simulated results for validated datasets at both locations were good. The average RMSE was 2.89 Mgha(-1); when compared to the deviations noted at the test site itself, it was apparent that they were smaller in all the years of research except the first year. The index of agreement was 0.97 and the coefficient of determination R-2 0.947. The AquaCrop model can be used with a high degree of reliability in strategic planning of Miscanthus cultivation in new areas, under different nutrient and water supply and local weather and soil conditions. PB - Wiley, Hoboken T2 - Global Change Biology Bioenergy T1 - Application of the AquaCrop model to simulate the biomass of Miscanthus x giganteus under different nutrient supply conditions EP - 1210 IS - 6 SP - 1203 VL - 7 DO - 10.1111/gcbb.12206 ER -
@article{ author = "Stričević, Ružica and Dzeletović, Zeljko and Djurović, Nevenka and Ćosić, Marija", year = "2015", abstract = "There are conflicting opinions about the need to fertilize Miscanthus and, also, the question has been raised whether Miscanthus should be irrigated, especially if water resources are limited. Crop growth modeling can help answer such questions. In this article the FAO AquaCrop water-driven model was selected to simulate Miscanthus biomass under different nutrient and water supply conditions. The article reports the outcomes of 6-year experiments with Miscanthus on two locations in Serbia: Zemun, where three fertilizer treatments were applied (N-l - 100kgha(-1), N-opt 50kgha(-1) and N-f nonfertilized), and Ralja, where only N-l 100kgha(-1) was applied. Model calibration focused on the measured data (root depth, crop phenology, and the above-ground biomass by year of growth. Calibration results showed a very good match between measured and simulated values. The largest and only significant difference was noted in 2008, when the crop was establishing and exhibited uneven radication. The simulation results for the next 5years showed a variance from -4 to 5.7%, believed to be a very good match. A high coefficient of determination (R-2=0.995) and high Willmott index of agreement (0.998) were also indicative of a good match between simulated and recorded biomass yields. The measured and simulated results for validated datasets at both locations were good. The average RMSE was 2.89 Mgha(-1); when compared to the deviations noted at the test site itself, it was apparent that they were smaller in all the years of research except the first year. The index of agreement was 0.97 and the coefficient of determination R-2 0.947. The AquaCrop model can be used with a high degree of reliability in strategic planning of Miscanthus cultivation in new areas, under different nutrient and water supply and local weather and soil conditions.", publisher = "Wiley, Hoboken", journal = "Global Change Biology Bioenergy", title = "Application of the AquaCrop model to simulate the biomass of Miscanthus x giganteus under different nutrient supply conditions", pages = "1210-1203", number = "6", volume = "7", doi = "10.1111/gcbb.12206" }
Stričević, R., Dzeletović, Z., Djurović, N.,& Ćosić, M.. (2015). Application of the AquaCrop model to simulate the biomass of Miscanthus x giganteus under different nutrient supply conditions. in Global Change Biology Bioenergy Wiley, Hoboken., 7(6), 1203-1210. https://doi.org/10.1111/gcbb.12206
Stričević R, Dzeletović Z, Djurović N, Ćosić M. Application of the AquaCrop model to simulate the biomass of Miscanthus x giganteus under different nutrient supply conditions. in Global Change Biology Bioenergy. 2015;7(6):1203-1210. doi:10.1111/gcbb.12206 .
Stričević, Ružica, Dzeletović, Zeljko, Djurović, Nevenka, Ćosić, Marija, "Application of the AquaCrop model to simulate the biomass of Miscanthus x giganteus under different nutrient supply conditions" in Global Change Biology Bioenergy, 7, no. 6 (2015):1203-1210, https://doi.org/10.1111/gcbb.12206 . .