Risk Analysis Of Hydrological Disaster And Its Impact On Forestry And Fruit Farming In Urumqi

As one of the urban disasters affecting urban ecology,urban hydrological disaster restricts the ecological,economic and social benefits of the city forestry.Domestic and foreign scholars have done a lot of research on the risk assessment of urban hydrological disaster,and accumulated some theoretical basis.Taking Urumqi City as the research object,this paper,based on the risk assessment theory of integrated disasters in historical situations,risk assessment of Urumqi hydrological disaster hazard-affected body respectively,the vulnerability of hazard-affected bodies and environmental impact.By ArcGIS 10 and other software,we assess the hydrological disaster risk,bearing body vulnerability,environment sensitivity,and make the risk distribution map of Urumqi.The results are as follows:(1)Based on the historical hydrological data of Urumqi City,the time variation characteristics and evolution trend of hydrological disasters are analyzed,and the causes of hydrological disasters in Urumqi are analyzed.The results show that there is a great risk of snow disaster in November to March,and there is a great risk of flood disaster and drought risk during May to August.(2)Urumqi city hydrological disaster risk assessment body as follows:Urumqi city flood disaster risk,Urumqi City snow hazard of drought hazard in Urumqi City,Urumqi City,Urumqi City,hail disaster risk of frost hazard.The average interval of flood disaster in Urumqi is 1.71 a,and the occurrence cycle is 1.The average distance of snow disaster in Urumqi is 1.5,and that of a is 1 periods.Urumqi is likely to suffer floods and snowstorms during the next 15 a.(3)Urumqi city hydrological disaster hazard bearing body vulnerability assessment are as follows:Urumqi city hydrological disaster easily in the field of population casualties or cause damage to health personnel;easy to cause the development of various industries in the industrial field and the level of the national economy is damaged;Urumqi city disaster environmental sensitivity assessment are as follows: the comprehensive effect of hydrological disasters in Urumqi city Urumqi city environment consists of temperature,sunshine,elevation,topography,precipitation,forest resources,social and economic aspects.(4)Associated with the development of Urumqi city hydrological disaster and local fruit industry in Urumqi City,which has influence on the local drought hinder fruit crop yield,the impact of Urumqi City snow,hail,frost on the local forestry and fruit industry is not significant.