项目名称: 海岸带空间利用模式挖掘与时空分异分析
项目编号: No.41271409
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 苏奋振
作者单位: 中国科学院地理科学与资源研究所
项目金额: 75万元
中文摘要: 海岸带是生态脆弱带,也是高生产力带,其空间利用模式研究对于海岸带脆弱性、适应性和可持续发展研究有重要意义。目前空间利用模式的定量研究采用面积比较或景观学分析为多,为了考察地类间的空间关系,近年发展了关联规则提取空间利用模式的方法。面对海岸带海陆交互不易达、利用方式时间变化快、沿岸和垂向方向空间尺度分异突出的特点,该方法存在3方面不足,即模型依赖全解译专题数据,没有充分考虑海岸带方向尺度分异,同时空间关联规则方法的支持度和可信度依赖于主观的取值,客观性值得探讨。针对以上3点,本研究基于沿海岸作垂线抽样解译的方式,采用粗糙集约简算法,利用概率置信度方式确定空间模式的支持度和可信度,从而构造海岸带空间利用模式挖掘模型,并基于该挖掘模型,利用遥感数据,获取我国30年4个时期的海岸带空间利用模式,开展区域对比和时间对比分析,探寻30年我国海岸带空间利用模式的时间、空间分异和时空分异规律。
中文关键词: 海岸带;空间利用模式;挖掘模型;顺序模式;
英文摘要: Coastal zone is a special area with ecological vulnerability and high productivity. The spatial landuse mode research is important to the coastal vulnerability, adaptability and sustainability. Mostly, the landuse spatial mode is analyzed by the method of area contrast or landscape index. Recently, a method of spatial association rule has been developed. According to the characters of sea-land interaction without accessibility, fast change on the landuse spatial mode and the direction of heterogeneity along the coastline, the above methods have some disadvantages which are based on the whole-Interpretation data, without taking the heterogeneity into account and the support and confidence of association rule depends on the subject. This proposal will provide a data mining model to extract the coastal landuse spatial modes. The first step is to interpretation the landuse from remote sensing data along the sample lines which are perpendicular to the coastline. The second is to reduce the candidate table with rough set. The third step is to decide the support and confidence of rule by the probability and select the association rules. Especially, the research will use this data mining model to extract the coastal landuse spatial modes of China coastal zone and analyze the distribution of these spatial modes along th
英文关键词: Coastal zone;Pattern of coastal use;Mining model;Order pattern;