| 石振杰.云南会泽铅锌矿玄武岩与碳酸盐岩区景观格局分析[J].地质与勘探,2016,52(3):543-550 |
| 云南会泽铅锌矿玄武岩与碳酸盐岩区景观格局分析 |
| Analyzing landscape patterns of the basalt and carbonate rock area in the Huize lead-zinc mine, Yunnan Province |
| 投稿时间：2015-11-13 修订日期：2016-03-04 |
| DOI： |
| 中文关键词: 玄武岩 碳酸盐岩 面向对象 景观格局 主成分分析 |
| 英文关键词: basalt and carbonate rocks, object-oriented, landscape pattern, principal component analysis |
| 基金项目:国家自然科学基金联合基金（U1133602）、国家自然科学基金（41101343）和云南省高技术产业发展项目计划资助。 |
|
| 摘要点击次数: 1979 |
| 全文下载次数: 147 |
| 中文摘要: |
| 玄武岩与碳酸盐岩是岩浆岩和沉积岩的典型代表，两大岩类之间的差异性决定了两者具有不同的形状特征和抗风化能力。本文以会泽铅锌矿区为例，研究如何以定量方式表达这种差异。基于5m分辨率的RapidEye遥感影像，利用面向对象分类技术分离玄武岩和碳酸盐岩图斑，计算出代表斑块形态特征和破碎化信息的10个景观指数，并引用主成分分析法消除指数之间的信息冗余，更合理地表达指数意义。结果显示，面向对象分类技术分离出的裸岩斑块可单独计算景观指数，分析效果良好；景观指数分析和主成分分析结果一致，显示出玄武岩破碎度较高，形状呈不规则块状或团块状，碳酸盐岩破碎度比玄武岩低，形状呈现条带状，分析结果与两者的岩性特征以及遥感影像图形特征相符。研究对于岩浆岩和沉积岩的岩性自动识别有一定的指导作用。 |
| 英文摘要: |
| Basalt and carbonate rocks are typical representatives of igneous and sedimentary rocks, of which the distinct shape features and anti-weathering abilities depend on the differences of the two main types. With the Huize lead-zinc mine area of Yunnan Province as an example, this work attempted to characterize such differences by a quantitative manner. Based on RapidEye remote sensing imagery with 5m resolution, the map patches of basalt and carbonate rocks were extracted using the object-oriented classification technology. Then ten landscape indices representing the patch shape and fragmentation information were calculated, and principal component analysis was performed to eliminate redundant information between indices to express the meaning of indices more reasonably. The results show that for the bare rock patches separated by the object-oriented classification technology, the landscape indices can be calculated independently, which achieve good results. Results of landscape index and principal component analyses were consistent, indicating that the fragmentation degree of basalt is higher than carbonate rocks, and basalt patch shape exhibits blocks of irregular or massive shapes, while carbonate rock has a strip-like form. The analysis results are consistent with lithologic features and graphic characteristic in imagery of the two rocks. The study results would be helpful fo lithology identification of igneous and sedimentary rocks. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
