| 基于神经网络方法的湿地生态脆弱性评价 |
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| 引用本文： | 付博,姜琦刚,任春颖,谢振红.基于神经网络方法的湿地生态脆弱性评价[J].东北师大学报(自然科学版),2011,43(1):139-143. |
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| 作者姓名： | 付博 姜琦刚 任春颖 谢振红 |
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| 作者单位： | 付博,谢振红,FU Bo,XIE Zhen-hong(吉林大学地球探测科学与技术学院,吉林,长春,130026;吉林建筑工程学院测绘与勘查工程学院,吉林,长春,130118);姜琦刚,JIANG Qi-gang(吉林大学地球探测科学与技术学院,吉林,长春,130026);任春颖,REN Chun-ying(中国科学院东北地理与农业生态研究所,吉林,长春,130012) |
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| 基金项目： | 中国科学院知识创新工程重要方向项目，国家自然科学基金 |
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| 摘 要： | 应用BP神经网络模型对扎龙湿地的生态脆弱性进行了评价.采用7-2-4-1结构,以计算得到的各湿地类型样本栅格单元生态脆弱指数EⅥ值作为训练集,通过最大1 000次的误差反向传播训练,获得的最大误差是1.1%,最小误差0,成功实现了扎龙湿地7维评价指标变量到1维变量即扎龙湿地生态脆弱性指数的映射,得到了研究区全部栅格单元...
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| 关 键 词： | BP神经网络 地理信息系统 湿地 生态脆弱性 |
Ecological vulnerability assessment of wetland based on neural network |
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| FU Bo,JIANG Qi-gang,REN Chun-ying,XIE Zhen-hong.Ecological vulnerability assessment of wetland based on neural network[J].Journal of Northeast Normal University (Natural Science Edition),2011,43(1):139-143. |
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| Authors: | FU Bo JIANG Qi-gang REN Chun-ying XIE Zhen-hong |
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| Institution: | FU Bo1,2,JIANG Qi-gang1,REN Chun-ying3,XIE Zhen-hong1,2(1.College of Geoexploration Science and Technology,Jilin University,Changchun 130026,China,2.School of Surveying and Prospecting Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun 130118,3.Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130012,China) |
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| Abstract: | In the study of ecological vulnerability assessment in Zhalong Wet Ecosystem,a BP neural network model with 7-4-2-1 structure was established.It took the eco-environmental vulnerability index values of sample unit cells as training set,realized the mapping of the 7 dimensional evaluating indicator variable of Zhalong wet ecosystem to 1 dimensional variable namely EVI through 1 000 error back propagation trainings and received the EVI values of all unit cells.The classification map of frangibility indexes we... |
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| Keywords: | back-propagation neural network geographic information system wetland ecological vulnerability |
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