Abstract
The wheatbelt of Western Australia shows a distinct Mediterranean climate with most of the rainfall occurring in the winter months. The main factor limiting plant production in this region is rainfall. Due to clearing of native vegetation, dryland salinity is a major problem in south-west Australia. Since the mid 1970s the region has experienced a significant decrease in winter rainfall. Across nine sites, growing season rainfall (May to October) decreased by an average of 11% and the sum of rainfall in June and July (June + July) decreased by 20%. We used the ASPIM-Nwheat model in combination with historic climate data to study the impact of recent climate change on the hydrology and production of wheat based farming systems by comparing results for before and after 1975. Despite the large decline in rainfall, simulated yields based on the actual weather data did not fall. At the same time, simulated drainage decreased by up to 95% which will significantly reduce the spread of dryland salinity. These results were due to the rainfall changes mainly occurring in June and July, a period when rainfall often exceeds crop demand and large amounts of water are usually lost by deep drainage. The findings will have significant implications for estimates of future climate change impacts in this region with changes in rainfall causing non-proportional impacts on production and hydrological aspects, such as deep drainage and waterlogging, where proportionality is often presumed.
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Anderson GC, Fillery IRP, Dunin FX, Dolling PJ, Asseng S (1998) Nitrogen and water flows under pasture–wheat and lupin–wheat rotations in deep sands in Western Australia—2. Drainage and nitrate leaching. Aust J Agric Res 49:345–361
Asseng S, Van Herwaarden AF (2003) Analysis of the benefits to wheat yield from assimilates stored prior to grain filling in a range of environments. Plant Soil 256:217–229
Asseng S, Keating BA, Huth NI, Eastham J (1997) Simulation of perched watertables in a duplex soil. In: McDonald AD, McAleer M (eds) MODSIM ‘97 Proceedings of the international congress on modelling and simulation modelling and simulation society of Australia, vol 2. Canberra ACT, pp 538–543
Asseng S, Keulen H, Stol W, van Keulen H (2000) Performance and application of the APSIM Nwheat model in the Netherlands. Eur J Agron 12:37–54
Asseng S, Fillery IRP, Dunin FX, Keating BA, Meinke H (2001) Potential deep drainage under wheat crops in a Mediterranean climate. I. Temporal and spatial variability. Aust J Agric Res 52:45–56
Asseng S, Fillery IRP, Anderson GC, Dolling PJ, Dunin FX, Keating BA (1998a) Use of the APSIM wheat model to predict yield, drainage, and NO\(_{3}^{-1}\) leaching for a deep sand. Aust J Agric Res 49:363–377
Asseng S, Jamieson PD, Kimball B, Pinter P, Sayre K, Bowden JW, Howden SM (2004) Simulated wheat growth affected by rising temperature, increased water deficit and elevated atmospheric CO2. Field Crops Res 85:85–102
Asseng S, Keating BA, Fillery IRP, Gregory PJ, Bowden JW, Turner NC, Palta JA, Abrecht DG (1998b) Performance of the APSIM-wheat model in Western Australia. Field Crops Res 57:163–179
Belford RK, Dracup M, Tennant D (1991) Waterlogging limits crop growth on duplex soils. West. Aust J Agric 3:62–65
Carberry PS, Hochman Z, McCown RL, Dalgliesh NP, Foale MA, Poulton PL, Hargreaves JNG, Hargreaves DMG, Cawthray S, Hillcoat N, Robertson MJ (2002) The FARMSCAPE approach to decision support: farmers’, advisers’, researchers’ monitoring, simulation, communication and performance evaluation. Agric Syst 74:141–177
Fowler HJ, Blenkinsop S, Tebaldi C (2007) Linking climate change modelling to impacts studies: recent advances in downscaling techniques for hydrological modeling. Int J Clim 27:1547–1578
French RJ, Schultz JE (1984) Water use efficiency of wheat in a Mediterranean-type environment. I. The relation between yield, water use and climate. Aust J Agric Res 35:743–764
George R, McFarlane D, Nulsen B (1997) Salinity threatens the viability of agriculture and ecosystems in Western Australia. Hydrogeol J 5:6–21
Hamblin A, Kyneur G (1993) Trends in wheat yields and soil fertility in Australia. Australian Government Publishing Service, Canberra, Australia, p 141
Hochman Z, Van Rees H, Carberry PS, Holzworth D, Dalgliesh NP, Hunt J, Poulton PL, Brennan LE, Van Rees S, Huth NI, Peake AS, McCown RL (2008) Yield Prophet® an Internet-enabled simulation-based system to assist farmers reduce risk in Australia’s drought prone environments. J Exp Bot (in press)
Howden SM, Reyenga PJ, Meinke H (1999) Global change impacts on Australian wheat industry report to the Australian greenhouse office. CSIRO Sustainable Ecosystems, Canberra Australia
IOCI (2002) Indian Ocean climate initiative: climate change in south west western Australia. http://www.ioci.org.au/publications/pdf/IOCI_TechnicalReport02.pdf
IOCI (2005) IOCI reports key findings of recent research into south-western climate, bulletin no. 6. http://www.ioci.org.au/publications/pdf/IOCI_Bulletin6.pdf
John M, Pannell D, Kingwell R (2005) Climate change and the economics of farm management in the face of land degradation: dryland salinity in Western Australia. Can J Agric Econ 53:443–459
Keating BA, McCown RL, Cresswell HP (1995) Paddock-scale models and catchment-scale problems: the role for APSIM in the Liverpool Plains. In: Binning P, Bridgman H, Williams B (eds) MODSIM 95 Proceedings of the international congress on modelling and simulation modelling and simulation Society of Australia Inc., Canberra ACT, pp 158–165
Keating BA, Meinke H, Probert ME, Huth NI, Hills I (2001) NWheat: documentation and performance of a wheat module for APSIM. CSIRO Tropical Agriculture Technical Memorandum. Indooroopilly Queensland CSIRO Tropical Agriculture
Keating BA, Carberry PS, Hammer GL, Probert ME, Robertson MJ, Holzworth D, Huth NI, Hargreaves JNG, Meinke H, Hochman Z, McLean G, Verburg K, Snow V, Dimes JP, Silburn M, Wang E, Brown S, Bristow KL, Asseng S, Chapman S, McCown RL, Freebairn DM, Smith CJ (2003) An overview of APSIM, a model designed for farming systems simulation. Eur J Agron 18:267–288
Ludwig F, Asseng S (2006) Climate change impacts on wheat production in a Mediterranean environment in Western Australia. Agric Sys 90:159–179
Magrin GO, Travasso MI, Rodriguez GR (2005) Changes in climate and crop production during the 20th century in Argentina. Clim Chang 72:229–249
McFarlane DJ, Ruprecht J (2005) How salinity has changed Indian Ocean climate initiative climate note 11/05. http://www.ioci.org.au/publications/pdf/IOCIclimatenotes_11.pdf
McFarlane DJ, Williamson DR (2002) An overview of water logging and salinity in southwestern Australia as related to the ‘Ucarro’ experimental catchment. Agric Water Manag 53:5–29
McFarlane DJ, George RJ, Caccetta PA (2004) The extent and potential area of salt-affected land in Western Australia estimated using remote sensing and digital terrain models. In: 1st national salinity engineering conference, Perth, Western Australia, 9–12 November 2004
Meinke H, Stone R (2005) Seasonal and inter-annual climate forecasting: the new tool for increasing preparedness to climate variability and change in agricultural planning and operations. Clim Chang 70:221–253
Monteith JL (1988) Does transpiration limit the growth of vegetation or vice versa? J Hydrol 100:57–68
Power S, Sadler B, Nicholls N (2005) The influence of climate science on water management in Western Australia—lessons for climate scientists. Bull Am Meteorol Soc 86:839–844
Probert ME, Keating BA, Thompson JP, Parton WJ (1995) Modelling water, nitrogen, and crop yield for a long-term fallow management experiment. Aust J Exp Agric 35:941–950
Probert ME, Carberry PS, McCown RL, Turpin JE (1998) Simulation of legume–cereal systems using APSIM. Aust J Agric Res 49:317–327
Ritchie JT, Godwin DC, Otter-Nacke S (1995) CERES-wheat—a simulation module of wheat growth and development Michigan State University Agristars publication number: YM-U3-04442-JSC-18892
Semenov MA (2007) Development of high-resolution UKCIP02-based climate change scenarios in the UK. Agric For Meteorol 144:127–138
Semenov MA, Brooks RJ, Barrow EM, Richardson CW (1998) Comparison of the WGEN and LARS-WG stochastic weather generators for diverse climates. Clim Res 10:95–107
Smith IN, McIntosh P, Ansell TJ, Reason CJC, McInnes K (2000) Southwest Western Australian winter rainfall and its association with Indian Ocean climate variability. Int J Climatol 20:1913–1930
Turner NC, Ward PR (2002) The role of agroforestry and perennial pasture in mitigating water logging and secondary salinity: summary. Agric Water Manag 53:271–275
Turner NC, Asseng S (2005) Productivity, sustainability and rainfall-use efficiency in Australian rainfed Mediterranean agricultural systems. Aust J Agric Res 56:1123–1136
Van Ittersum MK, Howden SM, Asseng S (2003) Sensitivity of productivity and deep drainage of wheat cropping systems in a Mediterranean environment to changes in CO2, temperature and precipitation. Agric Ecosyst Environ 97:255–273
Ward PR, Dunin FX (2001) Growing season evaporation from duplex soils in south-western Australia. Agric Water Manage 50:141–159
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Ludwig, F., Milroy, S.P. & Asseng, S. Impacts of recent climate change on wheat production systems in Western Australia. Climatic Change 92, 495–517 (2009). https://doi.org/10.1007/s10584-008-9479-9
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DOI: https://doi.org/10.1007/s10584-008-9479-9