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遥感技术在农业保险病虫害定损中的应用——以双河农场稻瘟病为例 被引量:6
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作者 陈爱莲 朱玉霞 +2 位作者 孙伟 赵思健 张峭 《遥感信息》 CSCD 北大核心 2021年第6期44-50,共7页
针对农业保险中大范围、快速定损灾害难的问题,探索结合实测光谱和卫星影像建立灾害快速定损模型。以双河农场稻瘟病为例,采用ASD手持光谱仪进行光谱测量,发现受感染水稻在绿、红和近红外光处与正常水稻光谱差异较大。基于此现象,采用哨... 针对农业保险中大范围、快速定损灾害难的问题,探索结合实测光谱和卫星影像建立灾害快速定损模型。以双河农场稻瘟病为例,采用ASD手持光谱仪进行光谱测量,发现受感染水稻在绿、红和近红外光处与正常水稻光谱差异较大。基于此现象,采用哨兵2号卫星影像反演由这些波段参与的叶面积指数等五个作物生理参数,同时创建绿红光比值、归一化指数和差值标准化指数等三个稻瘟病指数,将这八个因子与实测损失率进行相关分析和逐步回归分析。结果表明:八个因子与损失率均呈显著负相关,相关系数最高达0.79;逐步回归筛选出两个因子的损失率模型,估算结果与实测灾害定损的回归系数R^(2)为0.69。尽管所建灾害定损模型不具有区域普适性,但可为当地保险理赔提供很好的参考信息。 展开更多
关键词 农业保险遥感 种植业保险遥感 稻瘟病 灾损估计 快速理赔
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Application of fuzzy theory on earthquake damage rate estimation of buildings
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作者 邵扬威 吴玉祥 +2 位作者 高士峰 黄麒然 张宽勇 《Journal of Central South University》 SCIE EI CAS 2014年第6期2454-2459,共6页
Variations between earthquakes result in many factors that influence post-earthquake building damage(e.g.,ground motion parameters,building structure,site information,and quality of construction).Consequently,it is ne... Variations between earthquakes result in many factors that influence post-earthquake building damage(e.g.,ground motion parameters,building structure,site information,and quality of construction).Consequently,it is necessary to develop an appropriate building damage-rate estimation model.The building damage survey data were recorded and constructed into files by the Architecture and Building Research Institute(ABRI),Taiwan for the 1999 Chi-Chi earthquake in the Nantou region as a basis for developing a building damage rate estimation model by applying fuzzy theory to express the fragility curves of buildings as a membership function.Empirical verification was performed using post-earthquake building damage data in the Taichung city that suffered relatively severe damage.Results indicate that fuzzy theory can be applied to predict building damage rates and that the estimated results are similar to actual disaster figures.Prediction of disaster damage using building damage rates can provide a reference for immediate disaster response during earthquakes and for regular disaster prevention and rescue planning. 展开更多
关键词 fuzzy theory membership function fragility curve earthquake damage rate
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