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首页> 外文期刊>Agricultural Economics Research Review >Impact of Climate Change on Yields of Major Food Crops in India: Implications for Food Security
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Impact of Climate Change on Yields of Major Food Crops in India: Implications for Food Security

机译：气候变化对印度主要粮食作物单产的影响：对粮食安全的影响

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摘要

The study has analysed changes in climate variables, viz. temperature and rainfall during the period 1969-2005 and has assessed their impact on yields of important food crops. A significant rise was observed in mean monthly temperature, but more so during the post-rainy season. The changes in rainfall, however, were not as significant. While an increase in maximum temperature was found to have an adverse effect on the crop yields, a similar increase in minimum temperature had a favourable effect on yields of most crops, but it was not sufficient to fully compensate the damages caused by the rise in maximimi temperature. Pigeonpea, rice, chickpea and wheat were more vulnerable to rise in temperature. Rainfall had a positive effect on most crops, butit could not counterbalance the negative effect of temperature. The projections of climate impacts towards 2100 have suggested that with significant changes in temperature and rainfall, the rice yield will be lower by 15 per cent and wheat yield by 22 per cent. Coarse cereals will be affected less, while pulses will be affected more than cereals. If the changes in climate are not significant, damages to crops will be smaller. In the short-run too climate impacts will not be so severe.
机译：该研究分析了气候变量的变化，即。 1969-2005年期间的温度和降雨，并评估了它们对重要粮食作物单产的影响。观察到平均每月温度显着升高，但在雨后季节更是如此。然而，降雨的变化并不明显。虽然发现最高温度升高对作物单产有不利影响，但最低温度的相似升高对大多数农作物的单产也有有利影响，但不足以完全弥补由于最大产量增加而造成的损害。温度。木豆，大米，鹰嘴豆和小麦更容易受到温度升高的影响。降雨对大多数农作物有积极影响，但不能抵消温度的不利影响。对2100年气候影响的预测表明，随着温度和降雨的显着变化，大米的产量将降低15％，小麦的产量将降低22％。粗粮对谷物的影响较小，而豆类对谷物的影响大于谷物。如果气候变化不明显，对农作物的损害将较小。从短期来看，气候影响也不会那么严重。

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