Showing results for: Drought
This study presents estimates of how changes in climate might affect the value of European farmland. Based on data for over 41 000 farms, the results suggest that their economic value could drop by up to 32%, depending on the climate scenario considered. The models represent severe, moderate and mild outcomes, respectively. Farms in southern Europe are particularly sensitive to climate change and could suffer value losses of up to 9% per 1 °C rise.
This paper by researchers in the US and Australia reports the findings of a long-term field-trial-based investigation into the effect of elevated carbon dioxide concentrations (CO2) on soy yield and drought tolerance. Their findings challenge the widely-held belief that crop yield will be increased by elevated CO2 (the so-called CO2 fertilisation effect) both because of increased photosynthetic rate, and because of lower susceptibility to drought: it has long been assumed that in higher CO2 conditions, stomatal conductance will be lower, leading to slower water loss from the leaves, slower water uptake from the roots, and consequently more moisture remaining in the soil for longer, thereby sustaining crops in limited rainfall.
In Africa and Latin America, the production of beans (Phaseolus vulgaris) is highly vulnerable to climate change impacts, which include higher temperatures and more frequent drought. Climate modeling suggests that, over the next several decades, the area suited for this crop in eastern and central Africa could shrink up to 50% by 2050.
This report sets out new climate change projections for Australia. It was produced by Commonwealth Scientific and Industrial Research Organisation (CSIRO) and funded by the Australian Government Department of the Environment, CSIRO and the Australian Bureau of Meteorology. The key findings from the report are copied as follows: