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首页> 外文期刊>International journal of remote sensing >Fraction images derived from Terra Modis data for mapping burnt areas in Brazilian Amazonia
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Fraction images derived from Terra Modis data for mapping burnt areas in Brazilian Amazonia

机译：来自Terra Modis数据的分数图像用于映射巴西亚马逊地区的烧毁区域

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摘要

The objective of this paper is to present a method for mapping burnt areas in Brazilian Amazonia using Terra MODIS data. The proposed approach is based on image segmentation of the shade fraction images derived from MODIS, using a non-supervised classification algorithm followed by an image editing procedure for minimizing misclassifications. Acre State, the focus of this study, is located in the western region of Brazilian Amazonia and undergoing tropical deforestation. The extended dry season in 2005 affected this region creating conditions for extensive forest fires in addition to fires associated with deforestation and land management. The high temporal resolution of MODIS provides information for studying the resulting burnt areas. Landsat 5 TM images and field observations were also used as ground data for supporting and validating the MODIS results. Multitemporal analysis with MODIS showed that about 6500 km2 of land surface were burnt in Acre State. Of this, 3700 km2 corresponded to the previously deforested areas and 2800 km2 corresponded to areas of standing forests. This type of information and its timely availability are critical for regional and global environmental studies. The results showed that daily MODIS sensor data are useful sources of information for mapping burnt areas, and the proposed method can be used in an operational project in Brazilian Amazonia.
机译：本文的目的是提供一种使用Terra MODIS数据绘制巴西亚马逊地区烧伤区域的地图的方法。所提出的方法基于从MODIS导出的阴影分数图像的图像分割，使用非监督分类算法，然后是用于最小化错误分类的图像编辑过程。这项研究的重点是英亩州（Acre State），它位于巴西亚马逊河的西部地区，正在经历热带森林砍伐。 2005年干旱季节的延长影响了该地区，除了与森林砍伐和土地管理相关的大火之外，还为大范围的森林大火创造了条件。 MODIS的高时间分辨率为研究燃烧区域提供了信息。 Landsat 5 TM图像和现场观测也被用作地面数据，以支持和验证MODIS结果。 MODIS的多时相分析表明，英亩州约6500 km2的土地被烧毁。其中，3700平方公里对应于先前被砍伐的森林，2800平方公里对应于原始森林的面积。此类信息及其及时可用性对于区域和全球环境研究至关重要。结果表明，每日MODIS传感器数据是绘制燃烧区域的有用信息，该方法可用于巴西亚马逊地区的一个运营项目。

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  • 来源
    《International journal of remote sensing》 |2009年第6期|1537-1546|共10页
  • 作者

    Y. E. SHIMABUKURO; V. DUARTE; E. ARAI; R. M. FREITAS; A. LIMA; D. M. VALERIANO; I. F. BROWN; M. L. R. MALDONADO;

  • 作者单位

    Instituto National de Pesquisas Espaciais (INPE), Av. dos Astronautas, 1758, Sao Jose dos Campos, SP, 12227-010, Brazil;

    Instituto National de Pesquisas Espaciais (INPE), Av. dos Astronautas, 1758, Sao Jose dos Campos, SP, 12227-010, Brazil;

    Instituto National de Pesquisas Espaciais (INPE), Av. dos Astronautas, 1758, Sao Jose dos Campos, SP, 12227-010, Brazil;

    Instituto National de Pesquisas Espaciais (INPE), Av. dos Astronautas, 1758, Sao Jose dos Campos, SP, 12227-010, Brazil;

    Instituto National de Pesquisas Espaciais (INPE), Av. dos Astronautas, 1758, Sao Jose dos Campos, SP, 12227-010, Brazil;

    Instituto National de Pesquisas Espaciais (INPE), Av. dos Astronautas, 1758, Sao Jose dos Campos, SP, 12227-010, Brazil;

    Woods Hole Research Center and Universidade Federal do Acre (UFAC), Parque Zoobotanico, Rio Branco, Acre, 69915-900, Brazil;

    Woods Hole Research Center and Universidade Federal do Acre (UFAC), Parque Zoobotanico, Rio Branco, Acre, 69915-900, Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
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