In 2015 FAO issued its first report on The Impact of Disasters on Agriculture and Food Security, exploring the negative effects of naturally-induced and climate-related disasters ona agriculture. Against the backdrop of increasingly pressing challenges, FAO has now expanded the report’s scope. The 2017 edition takes into consideration all threats facing agriculture today – from natural disasters in a changing climate to food chain crises and complex protracted crises, including civil conflict and war. This report shows that a staggering 22 percent of total damage and loss from natural disasters in developing countries was absorbed by the agriculture sector alone. 

(Taken from the Introduction). 

FAO – The impact of disasters and crises on agriculture and food security 2017
http://www.fao.org/resilience/resources/resources-detail/en/c/1106859/