Climate Change and Its Effects on Crop Yields

Over the past 100 years people have been increasingly paying attention to the effects of climate change on the planet. Until recently, many scientists believed that climate change does not harm plant life, because plants develop using carbon dioxide (CO 2), and carbon dioxide gas increases as the surface increases It is from. Climate change helps some aspects of the growth of crops, but now if creatures do not affect the climate, yield of crops will drop sharply, crop prices will rise, food shortages will be several tens of It will spread in years.

The impact of climate change on crop yield varies greatly depending on the region, the type of crop, the changes in the region's temperature and precipitation. For example, by the middle of the 21st century climate change could increase crop yields in East Asia and Southeast Asia by 20%, but production in Central Asia and South Asia decreased by 30%. Chain and interaction of economic, social and everyday environments is accompanied by long-term drought in rural areas. In Australia where drought was announced, drought-related concerns and psychological distress are rising, especially in areas suffering from losses of livelihoods and industries. Long-term drought is associated with an increase in the suicide rate of Australian male farmers

Process-based models are often used to analyze the impact of climate change on annual crop yields and analysis of many perennial crops often includes statistical models. Both crop variables (lowest temperature, highest temperature, precipitation etc.) of California's 10 major crops (wine, lettuce, almonds, strawberries, table grape, hay, orange, cotton, tomato, walnut, avocado, pistachio) Relationship was derived from the history of 1980-2003 using a regression model. These climate trends have various effects on crop yields of oranges, walnuts and avocados compared to other crops. Figure 10 shows how climate change is expected to affect production of almonds, walnuts, avocados, oranges, grapes by 2050. Due to climate change, the median forecast for wine grape production hardly changes in the coming century, but the other five crops show a moderate to large decline in yield.