A Report On Climate Change Essays
Climate change will result in higher temperatures and higher evapotranspiration rates in winegrowing regions, putting additional pressure on already-limited water supplies and meaning that the irrigated viticulture sector needs to continue to improve water use efficiency.
The majority of winegrowing regions worldwide are located in semi-arid and arid regions with low rainfall, meaning that irrigation is required. Climate change will result in higher temperatures and higher evapotranspiration rates in these regions, putting additional pressure on limited water supplies for domestic use, industry and agriculture. Dwindling water supplies, increasing drought frequency and uncertainties associated with a changing climate mean that the irrigated agriculture sector needs to improve water efficiency. In the Murray-Darling region of Australia, there will be more periods of low water availability and irrigators will most likely need to use an increased proportion of higher-security allocations (at both higher risk and higher cost).
Trickle (‘drip’) irrigation, a widely utilised irrigation method in viticulture, involves application of water at a slow rate from regularly spaced point sources (or emitters) above the soil surface. It is a relatively efficient means of irrigation, however there remain opportunities for further efficiency gains – for example by improved scheduling, regulated deficit irrigation, partial rootzone drying, subsurface drip irrigation and…