In the main meteorological calamities , losses due to floods are the largest , and then followed by the losses that hailstorms and droughts caused 自然风险中的主要气象灾害风险，洪水造成的损失最大，然后依次是风雹灾和旱灾。
2.
The ten plagues from god on the king of egypt were the plagues of : blood , frogs , gnats , flies , livestock , boils , hail , locusts , darkness , death of first born 神降于埃及王法老的十灾包括:血灾,蛙灾,虱灾,蝇灾,畜疫之灾,疮灾,雹灾,蝗灾,黑暗之灾,杀头生之灾
3.
Landforms , soil , climate and characteristics of distribution in time and space in ningxia of draughts , disasters caused by wind and sand , floods and waterlodgging caused by hail , frost injury and earthquakes . the eighth chapter is on the relationships of environmental changing and the development of the agriculture and livestock husbandry in ningxia autonomous region which covers two sections : namely the historical processes of the human activities and the changing of the forests in ningxia , and the human activities and spreading of the deserts . the ninth chapter is a chapter that studies the regional divergence of the productivity level and the experiences and lessons of the development of agriculture and livestock husbandry 下篇是宁夏农牧业发展等因素与环境变迁的关系，这又包括三章：第七章是农牧业发展的自然条件，即地貌、土壤、气候，以及历史时期宁夏旱灾、风沙灾害、水涝灾害、雹灾、霜冻灾害、地震灾害的时空分布特征；第八章是宁夏农牧业发展等因素与环境变迁的关系，这包括人类活动与宁夏森林的变迁、人类活动与宁夏土地沙漠化的历史演进两部分；第九章是宁夏南、北农牧业生产力水平的地区差异及农牧业开发的经验教训。
