基于信息扩散的山东省日光温室风灾风险评估

doi:10.3969/j.issn.1673-503X.2018.05.019

Abstract

Abstract: Wind tunnel test was used to measure the surface wind pressure coefficient of solar greenhouse under different wind direction angles.The critical wind speed of each part of solar greenhouse leading to the occurrence of wind disaster was obtained and used to analyze wind disaster index.Using 120 auto-observed meteorological stations data of daily maximum wind speed,as well as the wind disaster index,the inter-annual variation and inter-monthly variation of occurring number of wind disaster from 2006 to 2015 were analyzed.Using ArcGIS spatial analysis module,spatial distribution of wind disaster was studied.Risk assessment of wind disaster of greenhouse in Shandong province was performed by calculating wind disaster risk probability of different levels for all regions based on information dissemination theory.The results show that the critical wind speed of solar greenhouse wind disaster is 18.9 m·s^-1.The main type of solar greenhouse wind disaster in Shandong province is light-level wind disaster during 2006 to 2015.Spring is the season with more disasters.The spatial distribution characteristic of wind disaster shows that more disasters occur in the East (North) while less in the West (South) of Shandong province.The wind disaster occurs mainly in the peninsula of Shandong province,the most part of north-west of Shandong province,the middle part in east of Shandong province,and some parts of south-east of Shandong province.The risk probability of wind disaster of these regions is more than 80.1%.Our study provides some helpful scientific advices for protecting solar greenhouse production.

Key words: Solar greenhouse, Wind disaster, Risk assessment, Information dissemination theory

CLC Number:

LI Nan, XUE Xiao-ping, LI Hong-yi. The risk assessment of wind disaster of greenhouse in Shandong province based on information dissemination theory[J]. Journal of Meteorology and Environment, 2018, 34(5): 149-155.

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http://www.jme1984.net.cn/EN/Y2018/V34/I5/149

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The risk assessment of wind disaster of greenhouse in Shandong province based on information dissemination theory

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