项目名称: 基于多源数据的冲沟参数提取及空间尺度转换研究
项目编号: No.41471223
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 地质学
项目作者: 王涛
作者单位: 鲁东大学
项目金额: 80万元
中文摘要: 针对多源数据融合和空间尺度转换在冲沟信息提取研究中存在的不足,本项目拟以区域数据集成平台为支撑,以3S 技术和数学建模为技术手段,以冲沟参数提取方法研究为主线,以冲沟参数提取的空间尺度转换模型构建为核心,研究多源数据融合的冲沟参数提取方法,构建冲沟参数提取的空间尺度统计转换模型和分形连续尺度转换模型,并在不同区域进行精度检验与适用性评价。主要内容:(1)探讨三维地形数据与二维遥感数据的融合技术;(2)综合运用目视解译和面向对象图像分析技术,建立基于多源数据融合的冲沟参数提取方法;(3)分析遥感数据和地形数据在冲沟参数提取中的空间尺度效应,确定冲沟参数提取的适宜性尺度。(4)建立冲沟参数提取的空间尺度统计转换模型和分形连续尺度转换模型,并在不同区域对所建立的模型进行检验与评价。本研究对开拓沟蚀研究方法、提高沟蚀研究精度有重要理论与现实意义。
中文关键词: 沟道侵蚀;多源数据;参数提取;空间尺度转换
英文摘要: According to the deficiency of multi-source data fusion and spatial scaling on the study of gully erosion parameter extraction, the project intend to take the regional data integration platform as the support, use 3S technology and mathematical modeling techniques, follow the main line of the gullies erosion parameter extraction method, focuse on the spatial scaling model building of gully parameters. It tries to establish the gully parameters extraction method under the fusion of multi-source data, building spatial scale statistical transformation model and fractal continuous scaling model of gully parameters extraction, carry out accuracy test and applicability evaluation of the spatial scaling model in different regions. Main points: (1) Investigate the fusion technology of 3D terrain data and two-dimensional remote sensing data. (2) Establish the gully parameters extraction method from multi-source data based on the visual interpretation and object-oriented image analysis technology. (3) Analyze the space scale effect of gully parameters extraction from the remote sensing data and the terrain data to make sure of the suitability scale of gully parameter extraction. (4) Build the spatial scaling model of gully parameters based on intelligent digital elevation model and gully erosion thresholds terrain model,carry out accuracy test and applicability evaluation of the spatial scaling model in different regions. This project will play a significant role in expanding gully erosion study methods and enhancing the accuracy of gully erosion.
英文关键词: gully erosion;multi-source data;parameter extraction;spatial scaling