对湖北田歌的分布与田歌孕育的地理环境之间的关系进行了探究,以期为区域音乐的实证研究提供新的思路和方法.以湖北田歌为研究对象,选取1 248个田歌样本数据集,运用地理信息系统(geographic information system,GIS)对初步选定的田歌分...对湖北田歌的分布与田歌孕育的地理环境之间的关系进行了探究,以期为区域音乐的实证研究提供新的思路和方法.以湖北田歌为研究对象,选取1 248个田歌样本数据集,运用地理信息系统(geographic information system,GIS)对初步选定的田歌分布及音乐要素影响因子进行建库,基于随机森林及可解释性算法(shapley additive explanations,SHAP)构建田歌影响因子体系分析模型,通过受试者工作特性曲线(receiver operating characteristic curve,ROC)对模型的有效性进行评价,分析田歌的分布、音乐要素与地理环境之间的关系.研究结果表明:1)基于随机森林构建的田歌影响因子体系模型预测效果较好,其曲线下面积(area under the curve,AUC)的值为0.82;2)对田歌产生及音乐要素影响因子重要性排序得出,多年平均降雨量和多年平均气温是孕育湖北田歌的主要因子.其随机森林及SHAP算法,能在一定程度上预测湖北田歌分布格局,对区域音乐文化与地理关联性研究具有重要意义.展开更多
地质灾害精细化风险评价是提高镇域尺度下地质灾害防治效率、降低灾害风险的关键方法,基于精细化调查数据的镇域尺度风险评价技术研究已成为该领域的研究重点。衢州市全旺镇地质灾害具有类型多样、分布受地形和人类活动影响、季节性明...地质灾害精细化风险评价是提高镇域尺度下地质灾害防治效率、降低灾害风险的关键方法,基于精细化调查数据的镇域尺度风险评价技术研究已成为该领域的研究重点。衢州市全旺镇地质灾害具有类型多样、分布受地形和人类活动影响、季节性明显且潜在危害大的特点。但由于评估方法不够精细、数据不够精准全面以及技术手段存在局限等因素,所开展的灾害评估工作难以精确地量化地质灾害风险。顾及镇域尺度下地质环境背景和人类工程活动等因素,基于地理信息系统(Geographic Information System,GIS)空间分析技术和综合指数法,融合多源精细化地质灾害数据,构建了镇域尺度下地质灾害易损性和危险性精细化评价指标体系和评价方法。以全旺镇为研究区域,精细化评价了其地质灾害斜坡单元易发性,并通过增加大雨、暴雨、大暴雨、特大暴雨4种不同的降雨工况指标,以24小时内降雨量作为触发因素,分析了不同工况下斜坡单元发生灾害的失稳概率和空间强度,评价了4种不同降雨工况下全旺镇地质灾害的危险程度,得出了全旺镇的精细化风险性评价结果,划定了地质灾害风险区等级。所得结果与全旺镇滑坡地质灾害现状吻合,对镇域尺度下精细化地质灾害风险调查与评价具有一定的参考价值。展开更多
The land-use information system (LUIS) is a special geographical information system developed under the support of the geographical information system (GIS). It effectively combines the quantitative analysis with spac...The land-use information system (LUIS) is a special geographical information system developed under the support of the geographical information system (GIS). It effectively combines the quantitative analysis with space analysis, mixes the feature of the land-use data and figure de scription, achieves the mutual transfer of the data and figure, and provides some effective methods for the quantitative research and space analysis. The targets, methods and procedures of the overall design of LUIS and its structure function and characteristic are presented in this paper. It pro vides the guide and references for developing the special GIS suitable for the demand of land-use management.展开更多
By integrating the merits of the map overlay method and the geographic information system (GIS), a GIS based map overlay method was developed to analyze comprehensively the environmental vulnerability around railway a...By integrating the merits of the map overlay method and the geographic information system (GIS), a GIS based map overlay method was developed to analyze comprehensively the environmental vulnerability around railway and its impact on the environment, which is adapted for the comprehensive assessment of railway environmental impact and the optimization of railway alignments. The assessment process of the GIS based map overlay method was presented, which includes deciding the system structure and weights of assessment factors, making environmental vulnerability grade maps, and evaluating the alternative alignments comprehensively to obtain the best one. With the GIS functions of spatial analysis, such as overlay analysis and buffer analysis, and functions of handling attribute data, the GIS based map overlay method overcomes the shortcomings of the existing map overlay method and the conclusion is more reasonable. In the end, a detailed case study was illustrated to verify the efficiency of the method.展开更多
Geographic Information Systems(GIS) can be successfully introduced as a tool to manage water system infrastructures.This technology was taken into consideration after the local authorities’ estimation for almost 30%l...Geographic Information Systems(GIS) can be successfully introduced as a tool to manage water system infrastructures.This technology was taken into consideration after the local authorities’ estimation for almost 30%losses in the water distribution networks in cities.The major issue of water shortage in展开更多
With the actuality and characteristic and requirement of rural power enterprise distribution network management, this article introduced the function of geographic information system on the framework of distribution n...With the actuality and characteristic and requirement of rural power enterprise distribution network management, this article introduced the function of geographic information system on the framework of distribution network, in order to develop rural distribution network.展开更多
文章在常规TOPSIS(technique for order preference by similarity to ideal solution)模型的基础上提出空间TOPSIS模型,以安徽省休宁县为例,采用地理信息系统(geographic information system,GIS)技术对安徽省休宁县的滑坡易发性进行...文章在常规TOPSIS(technique for order preference by similarity to ideal solution)模型的基础上提出空间TOPSIS模型,以安徽省休宁县为例,采用地理信息系统(geographic information system,GIS)技术对安徽省休宁县的滑坡易发性进行评价。研究表明:基于GIS的空间TOPSIS模型的滑坡易发性评价,能够处理和分析滑坡评价因子以及滑坡易发性的空间变化特征;评价结果与休宁县境内已经发生滑坡的空间分布较为吻合,评价结果较好。基于GIS的空间TOPSIS模型在滑坡易发性评价中具有较好的适用性。展开更多
文摘对湖北田歌的分布与田歌孕育的地理环境之间的关系进行了探究,以期为区域音乐的实证研究提供新的思路和方法.以湖北田歌为研究对象,选取1 248个田歌样本数据集,运用地理信息系统(geographic information system,GIS)对初步选定的田歌分布及音乐要素影响因子进行建库,基于随机森林及可解释性算法(shapley additive explanations,SHAP)构建田歌影响因子体系分析模型,通过受试者工作特性曲线(receiver operating characteristic curve,ROC)对模型的有效性进行评价,分析田歌的分布、音乐要素与地理环境之间的关系.研究结果表明:1)基于随机森林构建的田歌影响因子体系模型预测效果较好,其曲线下面积(area under the curve,AUC)的值为0.82;2)对田歌产生及音乐要素影响因子重要性排序得出,多年平均降雨量和多年平均气温是孕育湖北田歌的主要因子.其随机森林及SHAP算法,能在一定程度上预测湖北田歌分布格局,对区域音乐文化与地理关联性研究具有重要意义.
文摘地质灾害精细化风险评价是提高镇域尺度下地质灾害防治效率、降低灾害风险的关键方法,基于精细化调查数据的镇域尺度风险评价技术研究已成为该领域的研究重点。衢州市全旺镇地质灾害具有类型多样、分布受地形和人类活动影响、季节性明显且潜在危害大的特点。但由于评估方法不够精细、数据不够精准全面以及技术手段存在局限等因素,所开展的灾害评估工作难以精确地量化地质灾害风险。顾及镇域尺度下地质环境背景和人类工程活动等因素,基于地理信息系统(Geographic Information System,GIS)空间分析技术和综合指数法,融合多源精细化地质灾害数据,构建了镇域尺度下地质灾害易损性和危险性精细化评价指标体系和评价方法。以全旺镇为研究区域,精细化评价了其地质灾害斜坡单元易发性,并通过增加大雨、暴雨、大暴雨、特大暴雨4种不同的降雨工况指标,以24小时内降雨量作为触发因素,分析了不同工况下斜坡单元发生灾害的失稳概率和空间强度,评价了4种不同降雨工况下全旺镇地质灾害的危险程度,得出了全旺镇的精细化风险性评价结果,划定了地质灾害风险区等级。所得结果与全旺镇滑坡地质灾害现状吻合,对镇域尺度下精细化地质灾害风险调查与评价具有一定的参考价值。
文摘The land-use information system (LUIS) is a special geographical information system developed under the support of the geographical information system (GIS). It effectively combines the quantitative analysis with space analysis, mixes the feature of the land-use data and figure de scription, achieves the mutual transfer of the data and figure, and provides some effective methods for the quantitative research and space analysis. The targets, methods and procedures of the overall design of LUIS and its structure function and characteristic are presented in this paper. It pro vides the guide and references for developing the special GIS suitable for the demand of land-use management.
文摘By integrating the merits of the map overlay method and the geographic information system (GIS), a GIS based map overlay method was developed to analyze comprehensively the environmental vulnerability around railway and its impact on the environment, which is adapted for the comprehensive assessment of railway environmental impact and the optimization of railway alignments. The assessment process of the GIS based map overlay method was presented, which includes deciding the system structure and weights of assessment factors, making environmental vulnerability grade maps, and evaluating the alternative alignments comprehensively to obtain the best one. With the GIS functions of spatial analysis, such as overlay analysis and buffer analysis, and functions of handling attribute data, the GIS based map overlay method overcomes the shortcomings of the existing map overlay method and the conclusion is more reasonable. In the end, a detailed case study was illustrated to verify the efficiency of the method.
文摘Geographic Information Systems(GIS) can be successfully introduced as a tool to manage water system infrastructures.This technology was taken into consideration after the local authorities’ estimation for almost 30%losses in the water distribution networks in cities.The major issue of water shortage in
基金Science and Technology Research Instruction Project of Heilongjiang Province Education Department (9553032)
文摘With the actuality and characteristic and requirement of rural power enterprise distribution network management, this article introduced the function of geographic information system on the framework of distribution network, in order to develop rural distribution network.
文摘文章在常规TOPSIS(technique for order preference by similarity to ideal solution)模型的基础上提出空间TOPSIS模型,以安徽省休宁县为例,采用地理信息系统(geographic information system,GIS)技术对安徽省休宁县的滑坡易发性进行评价。研究表明:基于GIS的空间TOPSIS模型的滑坡易发性评价,能够处理和分析滑坡评价因子以及滑坡易发性的空间变化特征;评价结果与休宁县境内已经发生滑坡的空间分布较为吻合,评价结果较好。基于GIS的空间TOPSIS模型在滑坡易发性评价中具有较好的适用性。
