کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4459147 1621278 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantifying forest cover loss in Democratic Republic of the Congo, 2000–2010, with Landsat ETM + data
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات کامپیوتر در علوم زمین
پیش نمایش صفحه اول مقاله
Quantifying forest cover loss in Democratic Republic of the Congo, 2000–2010, with Landsat ETM + data
چکیده انگلیسی

Forest cover and forest cover loss for the last decade, 2000–2010, have been quantified for the Democratic Republic of the Congo (DRC) using Landsat time-series data set. This was made possible via an exhaustive mining of the Landsat Enhanced Thematic Mapper Plus (ETM +) archive. A total of 8881 images were processed to create multi-temporal image metrics resulting in 99.6% of the DRC land area covered by cloud-free Landsat observations. To facilitate image compositing, a top-of-atmosphere (TOA) reflectance calibration and image normalization using Moderate Resolution Imaging Spectroradiometer (MODIS) top of canopy (TOC) reflectance data sets were performed. Mapping and change detection was implemented using a classification tree algorithm. The national year 2000 forest cover was estimated to be 159,529.2 thousand hectares, with gross forest cover loss for the last decade totaling 2.3% of forest area. Forest cover loss area increased by 13.8% between the 2000–2005 and 2005–2010 intervals, with the greatest increase occurring within primary humid tropical forests. Forest loss intensity was distributed unevenly and associated with areas of high population density and mining activity. While forest cover loss is comparatively low in protected areas and priority conservation landscapes compared to forests outside of such areas, gross forest cover loss for all nature protection areas increased by 64% over the 2000 to 2005 and 2005 to 2010 intervals.


► Forest cover and loss from 2000 to 2010 have been quantified using Landsat data.
► We used an automatic image processing system to create multi-temporal metrics.
► Forest cover loss was analyzed at the national level and within protected areas.
► Gross forest cover loss from 2000 to 2010 totaling 2.3% of year 2000 forest area.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Remote Sensing of Environment - Volume 122, July 2012, Pages 106–116
نویسندگان
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