Blue and green water use in crop production in Cyprus; exploring pathways towards climate change adaptation A. Bruggeman 1, C. Zoumides 2, Stelios Pashiardis 3, Panos Hadjinicolaou 1, M.A. Lange 1 and Theodoros Zachariadis 2 1 Energy, Environment and Water Research Center, The Cyprus Institute 2 Dept of Environmental Science & Technology, Cyprus University of Technology 3 Cyprus Meteorological Service
Research objective To assess the effect of climate variability and changes in water supply on changes in agricultural land use, production and irrigation water demand in Cyprus Green and blue water resources in Cyprus Renewable water resourcesCrop water demand Oct 1980 – Sep 2009 Precipitation (mm) Green water (Mm3) – 440 Blue water (Mm3) – 219 Source WDD, 2002 Bruggeman et al, 2011
Methods: a daily soil water balance model, based on the FAO dual crop coefficient approach, was developed to compute the crop water use, originating from precipitation (green water) and from irrigation (blue water)
Methods: daily meteorological data from 34 stations and precipitation data from 70 gauges from the Cyprus Meteorological Service (Oct 1980 – Dec 2010)
Methods: soil physical data based on 1:250,000 soil map of Cyprus
Methods: crop area and production data for 87 different crops and 30 seasons (1979/ /09) from the Cyprus Agricultural Statistics
Methods: location of crops in 431 communities from the Agricultural Census (2003) and the Cyprus Agricultural Payment Organization
Results
Conclusions Crop production in Cyprus makes efficiently use of the precipitation, which may otherwise evaporate back to the atmosphere with little local benefit. Land use change, water policies and climate change may reduce national crop production by 46-49% for rain-fed crops and by 38-42% for irrigated crops, for , relative to Computations indicate that the value of crop production could range from 0.02 €/m 3 for alfalfa to 35 €/m3 for cucumbers. Research is ongoing to identify climate-resilient, environmentally-friendly, and economically-efficient crop production options for Cyprus and the Mediterranean region.
Allen, R.G., L.S. Pereira, D. Raes, and M. Smith Crop evapotranspiration - Guidelines for computing crop water requirements, Irrigation and Drainage Paper 56, FAO, Rome. Bos, M. G., R.A.L. Kselik, R.G. Allen, D. Molden Water requirements for irrigation and the environment. Springer, New York. Bruggeman, A., C. Zoumides, S. Pashiardis, P. Hadjinicolaou, M.A. Lange, and T. Zachariadis Effect of climate variability and climate change on crop production and water resources in Cyprus. Study for the Ministry of Agriculture, Natural Resources and Environment, led by the Agricultural Research Institute of Cyprus, June Cyprus Meteorological Service Cyprus average annual precipitation Cyprus Meteorological Service Monthly rainfall in Cyprus during the hydrometeorological year and Hadjiparaskevas, C Soil survey and monitoring in Cyprus. European Soil Bureau-Research Report 9, Statistical Service Census of agriculture Agricultural Statistics, Series I, Report 7. Republic of Cyprus Printing Office, Nicosia. Statistical Service Agricultural statistics Agricultural Statistics, Series II (individual reports for each year). Republic of Cyprus Printing Office, Nicosia. Water Development Department (WDD) Use and conservation of water in Cyprus. WDD, Ministry of Agriculture, Natural Resources and Environment. References
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