A novel approach in monitoring land-cover change in the tropics: oil palm cultivation in the Niger Delta, Nigeria

Stanley U. Okoro, Udo Schickhoff, Jürgen Böhner, Uwe A. Schneider

Abstract


The increasing demand for palm oil and bioenergy has promoted the expansion of tropical farmland covered with oil palms (Elaeis guineensis), resulting in increased competition with food production as well as environmental degradation. Moreover, oil palm cultivation may have increased greenhouse gas (GHG) emissions through deforestation. The overall impact estimation of oil palm related land-use change requires spatiotemporal land-use maps. So far, the Roundtable on Sustainable Palm Oil (RSPO) has not established guidelines on how to measure and evaluate oil palm related land-cover change. While remote sensing methods are suitable in general, the use of Landsat images in the tropics for the monitoring and modeling of land-cover changes has been restricted due to the influence of cloud cover. This study presents a novel approach for mapping tropical land-cover change ­using the Google Earth Engine (GEE) cloud-based platform and the System for Automated Geoscientific Analysis (SAGA) GIS. Spatiotemporal land-use and land-cover changes in relation to oil palm cultivation are assessed using a median pixel composite mosaic of Landsat 5, 7 and 8 image scenes for the time periods 1999-2005 and 2009-2015. The proposed approach yields an overall accuracy and kappa coefficient of 70.33 % and 0.62 for the first image composite period, and 84.5 % and 0.80 for the second image composite period respectively

Keywords


Oil palm mapping, Google Earth Engine, SAGA GIS, Landsat image, land use/land cover

Full Text:

PDF

Refbacks

  • There are currently no refbacks.



If a manuscript is accepted for publication, the authors will be asked to pay an Article Publication Fee to cover publications costs.

Die ERDE charges the authors a page fee of € 25.– (no VAT required) for accepted and published articles to cover a part of the production costs.

This fee includes full open access to contents, no additional fee is necessary to allow everybody to access the PDF of the published paper. This means: you can freely distribute the final PDF, present it on your homepage and make links to the PDF from other web sites. In detail, Die ERDE uses the following copyright license:

Creative Commons License Articles published in Die ERDE are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

In April 2018 the Editorial Manager has changed. Please address all inquiries and correspondence to Dr. Verena Sandner Le Gall, sandner[AT]geographie.uni-kiel.de.



Archive

Since 2011 all issues are openly accessible via this link
Older issues (back as far as 1833) are also open-access available – via www.digizeitschriften.de