| 基于植被胁迫光谱的高光谱遥感植被元素富集信息提取 |
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| 引用本文： | 帅琴,黄爽,李志忠,陈圣波,徐守礼.基于植被胁迫光谱的高光谱遥感植被元素富集信息提取[J].地球科学,2015,40(8):1319-1324. |
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| 作者姓名： | 帅琴 黄爽 李志忠 陈圣波 徐守礼 |
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| 作者单位： | 1.中国地质大学材料与化学学院, 湖北武汉 430074 |
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| 基金项目： | 国家自然科学基金项目41402293国家高技术研究发展计划(863计划)项目2008AA121100国家高技术研究发展计划(863计划)项目2012AA12A308 |
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| 摘 要： | 含矿层中成矿元素的迁移富集可胁迫影响上覆植物光谱, 因此, 利用植物响应特征提取成矿元素富集信息可指示潜在的矿床位置.以内蒙古西乌旗草原覆盖区为例, 采集典型植物光谱并测试元素含量, 分析红边和吸收深度对不同成矿元素的敏感性, 并进行模型显著性参数检验, 建立了基于植物吸收深度的Co和W元素响应模型, 应用于示范区的Hyperion影像, 圈定了Co和W元素富集信息.结合野外实地采样验证, 富集点元素含量均高于背景值.该研究可为植被覆盖区的高光谱遥感地质调查提供新的思路.
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| 关 键 词： | 成矿元素 胁迫光谱 红边位置 遥感 吸收深度 |
| 收稿时间： | 2015-03-19 |
The Metal Element Information Extraction from Hyperion Data Based on the Vegetation Stress Spectra |
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| Abstract: | The migration enrichment of metallogenic elements in the bearing bed can cause changes of the spectrum of overlying vegetation. Therefore, the metallogenic elements enrichment information which is extracted by using vegetation spectral response characteristics can be used to indicate the underlying mineral deposits. In this paper, Xi Ujimqin Qi grassland in Inner Mongolian was taken as an example. The spectra of the vegetation was collected and Nine metal elements in the vegetation were measured. The influence of red edge and absorption depth on the sensitivity of different metallogenic elements were analyzed. The significance of model parameters was verified and the element-response model based on absorption depth was established to detect W and Co elements, which was applied to hyperspectral data(Hyperion). Combined with the field work, the element contents of enriched samples are testified to be higher than the background values. This research shall provide new perspective for mineral investigation and prediction of hyperspectral remote sensing in vegetated area. |
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