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Forest cover change detection using Geographic Information Systems and remote sensing techniques: a spatio-temporal study on Komto Protected forest priority area, East Wollega Zone, Ethiopia
Environmental Systems Research Pub Date : 2020-01-21 , DOI: 10.1186/s40068-020-0163-z
Milkessa Dangia Negassa , Demissie Tsega Mallie , Dessalegn Obsi Gemeda

Background Forest plays an important role in climate regulation and carbon sequestration. Komto Forest is one of the remnant natural forests found in Guto Gida district of East Wollega zone, Ethiopia, has been supporting the local community for construction, energy and household furniture. Currently, influenced by land use land cover change (LULCC), this forest has been declining at an alarming rate. Detecting LULCC and understanding the driving forces has important for supporting decision making processes. We examine variation in forest cover dynamics over the period 1991–2012 using Landsat TM image of 1991, ETM + of 2002 and OLI-TIRS of 2019. Results The LULCC detection results show that a dramatic increase of agricultural land from (24.78%) in 1991 to (33.5%) in 2019 with annual expansion rate (23.68%) per annum, where forest cover declined by 20.1% in 1991 and 37.38% in 2019 with annual decreasing rate of 4.18% per annum. Our finding indicates the increment of agricultural land, grassland, and settlement, while the dense and open forest cover shows a declining trend. The declining of forest coverage is likely to cause unpleasant environment and affects human wellbeing. Conclusions The massive declined in forest cover change are often associated with agricultural expansion in the periphery of the forest. Timber exploitation and charcoal production are other problems that contribute for the declining of forest coverage. Overall, our results suggest the need of participatory forest management and public awareness creation to sustain the Komto remnant forest.

中文翻译:

使用地理信息系统和遥感技术检测森林覆盖变化:埃塞俄比亚东沃勒加区 Komto 森林保护优先区的时空研究

背景森林在气候调节和固碳方面发挥着重要作用。科姆托森林是埃塞俄比亚东沃莱加区古托吉达区发现的残余天然林之一,一直为当地社区提供建设、能源和家用家具的支持。目前,受土地利用土地覆盖变化(LULCC)的影响,这片森林以惊人的速度减少。检测 LULCC 并了解驱动力对于支持决策过程很重要。我们使用 1991 年的 Landsat TM 图像、2002 年的 ETM + 和 2019 年的 OLI-TIRS 检查了 1991-2012 年期间森林覆盖动态的变化。 1991 年至 2019 年(33.5%),年增长率(23.68%),其中森林覆盖率1991年下降20.1%,2019年下降37.38%,年均下降4.18%。我们的发现表明农业用地、草地和聚居地增加,而茂密和开阔的森林覆盖率呈下降趋势。森林覆盖率的下降很可能会造成不愉快的环境并影响人类福祉。结论 森林覆盖变化的大规模下降通常与森林外围的农业扩张有关。木材开采和木炭生产是导致森林覆盖率下降的其他问题。总的来说,我们的结果表明需要参与式森林管理和提高公众意识来维持 Komto 残余森林。我们的发现表明农业用地、草地和聚居地增加,而茂密和开阔的森林覆盖率呈下降趋势。森林覆盖率的下降很可能会造成不愉快的环境并影响人类福祉。结论 森林覆盖变化的大规模下降通常与森林外围的农业扩张有关。木材开采和木炭生产是导致森林覆盖率下降的其他问题。总的来说,我们的结果表明需要参与式森林管理和提高公众意识来维持 Komto 残余森林。我们的发现表明农业用地、草地和聚居地增加,而茂密和开阔的森林覆盖率呈下降趋势。森林覆盖率的下降很可能会造成不愉快的环境并影响人类福祉。结论 森林覆盖变化的大规模下降通常与森林外围的农业扩张有关。木材开采和木炭生产是导致森林覆盖率下降的其他问题。总的来说,我们的结果表明需要参与式森林管理和提高公众意识来维持 Komto 残余森林。森林覆盖率的下降很可能会造成不愉快的环境并影响人类福祉。结论 森林覆盖变化的大规模下降通常与森林外围的农业扩张有关。木材开采和木炭生产是导致森林覆盖率下降的其他问题。总的来说,我们的结果表明需要参与式森林管理和提高公众意识来维持 Komto 残余森林。森林覆盖率的下降很可能会造成不愉快的环境并影响人类福祉。结论 森林覆盖变化的大规模下降通常与森林外围的农业扩张有关。木材开采和木炭生产是导致森林覆盖率下降的其他问题。总的来说,我们的结果表明需要参与式森林管理和提高公众意识来维持 Komto 残余森林。
更新日期:2020-01-21
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