1 . The world food safety could be in danger because of a number of food production shocks (冲击), according to an Australian study.

The researchers from the University of Tasmania found that there were 226 shocks in the area of food production across 134 nations and the frequency has been increasing over the past 50 years.

According to Cottrell, a researcher from the University of Tasmania, the main causes behind the shocks are different. For crops, extreme weather events such as floods and no rain for a long time play the biggest part. Weather also plays a role in livestock(家畜)production, but disease plays a bigger role. Disease also leads to aquaculture(水产业)shocks, while in the ocean most of the food shocks are caused by overfishing.

“When we look at the food production systems, covering crops, livestock, fisheries and aquaculture,” Cottrell said, “we find that crops and livestock are more easily affected than aquaculture. And some countries in South Asia are more frequently affected than others.”

The effects of production shocks reached far away from where they happened. When one means of food production is greatly reduced, it will cause unexpected results. “The India got a lot of food production shocks in crops and livestock, largely because of floods,” Cottrell explained. “If countries like India are shocked and the rice production is much smaller, they’ll probably send less goods to another country. And that shock suddenly starts to affect all the trade partners of the major producers as well.”

According to what Cottrell said, while the international community faces a great challenge to these problems, steps taken now can help fight against unexpected shocks in the future. “This can be done through measures such as food store systems so that they are better able to deal with the effect which is caused by problems such as climate change.” said Cottrell.

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