利用LANDSAT 7 ETM+图像绘制比奥科岛(赤道几内亚)植被图:非洲山地地貌的特殊性

Q3 Agricultural and Biological Sciences

Darwiniana Pub Date : 2012-10-29 DOI:10.14522/DARWINIANA.2014.502.433

R. Cerrillo, M. C. Muñoz, Nicholas A. Kasimis, E. P. Cedrés, Esteban Hernández Bermejo, E. Fernández, A. Ferrer

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引用次数: 5

摘要

可持续森林管理需要适当的制图资料。在这项工作中，我们基于Landsat 7 ETM +的监督分类，绘制了比奥科岛(赤道几内亚)当前植被的地图，并绘制了非洲山地森林的地图，包括非洲李生长的数据分布、地表和森林类型。在几内亚-刚果森林和非洲山地森林以及不同的非洲山地次生地层之间，我们提出了六种新的过渡性植被类型。比奥科植被图Kappa系数为0.69。在将次等低地森林与几内亚-刚果森林和非洲山地森林之间的过渡区分开时遇到了困难。当第二次分类仅限于岛上的非洲山地植被(海拔1400米)时，精度得到了极大的提高，Kappa系数为0.81。我们的结果对森林管理具有适当的准确性，表明遥感是制图开发的有用来源，特别是在难以进入的热带地区。

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CARTOGRAFÍA DE LA VEGETACIÓN DE LA ISLA DE BIOKO (GUINEA ECUATORIAL) MEDIANTE EL USO DE IMÁGENES LANDSAT 7 ETM+: PARTICULARIZACIÓN DEL PISO AFROMONTANO

Sustainable forest management requires appropriate mapping information. In this work we developed a mapping of the current vegetation of Bioko island (Equatorial Guinea) based on supervised classification of a Landsat 7 ETM +, and a mapping of Afromontane forests, including data distribution, surface and forest types where Prunus africana occurs. We propose six new types of transitional vegetation between Guinean-Congolese forest and Afromontane forests and different secondary Afromontane formations. The vegetation map of Bioko had a Kappa coefficient of 0.69. Difficulties were encountered in separating secondary lowland forest classes from transition zones between Guineo-Congolian and Afromontane forests. Accuracy was highly improved when a second classification was restricted to the island’s Afromontane vegetation (>1400 m a.s.l.), yielding a Kappa coefficient of 0.81. Our results have appropiate accuracy for forest management demonstrating that remote sensing is a useful source for mapping development, especially in tropical areas with difficult access.

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来源期刊

Darwiniana Agricultural and Biological Sciences-Plant Science

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

26 weeks

期刊介绍： Darwiniana is a half-yearly botanic publication of the Darwinion Botanic Institute, National Counseling of Scientific and Technical Researches (CONICET) - National Acadamey of Exact, Physical and Natural Sciences. Its mission is to publish original scientific papers and reviews from different areas of the botanical issue with the exception of those which nature are agronomical and applied botanical research (of direct transfer). Main articles are usually included in the following sections: Structure and Development; Reproductive Biology; Ecology and Phytogeography; Etnobotany; Genetics; Systematics and Taxonomy of Vascular Plants; Systematics and Taxonomy of non Vascular Plants.