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首页> 外文期刊>Journal of Sustainable Development >Assessing Land Use and Land Cover Changes in the Murchison Bay Catchment of Lake Victoria Basin in Uganda
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Assessing Land Use and Land Cover Changes in the Murchison Bay Catchment of Lake Victoria Basin in Uganda

机译：评估乌干达维多利亚湖盆地默奇森湾流域的土地利用和土地覆盖变化

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The Murchison Bay catchment in the northern shoreline of Lake Victoria basin is a high valued ecosystem because of the numerous human-related activities it supports in Uganda. The catchment has undergone tremendous human-induced land use/cover changes, which have not been quantified. This study aimed at quantifying the land use/cover changes as well as the rate at which these changes occurred over the last three decades in the catchment. This was achieved using remote sensing techniques and Geographic Information System (GIS) to analyse and contextualize the changes. To that effect, images of Landsat satellites MSS, TM, ETM+ and OLI were interpreted using supervised image classification technique to determine the land use/land cover changes from 1984 to 2015. The obtained results indicated that the catchment has undergone huge land use and land cover transformations over the last three decades attributable to rapid population growth and urbanization. The prevailing changes in footprint between 1984 and 2015 were expansions of built–up land (20.58% to 49.59%) and open water bodies (not detected in 1984 to 1.74%), and decreases in the following sectors: agricultural lands (from 43.88% to 26.10%), forestland (from 23.78% to 17.49%), and wetlands (from 11.76% to 5.08%). The changes pose a threat to the environment and water quality of the Murchison Bay and consequently increases National Water and Sewerage Corporation water treatment costs. Therefore, there is the need to take critical and practical measures to regulate and police land use, water use rights and conserve the environment especially wetlands.
机译：维多利亚湖盆地北部海岸线的默奇森湾流域是一个价值很高的生态系统，因为它在乌干达支持许多与人类有关的活动。流域经历了人为引起的巨大土地利用/覆盖变化，目前尚未量化。这项研究旨在量化流域过去三十年的土地利用/覆盖变化以及这些变化发生的速度。这是通过使用遥感技术和地理信息系统（GIS）来分析和关联变化来实现的。为此，使用有监督的图像分类技术对Landsat卫星MSS，TM，ETM +和OLI的图像进行了解释，以确定1984年至2015年的土地利用/土地覆盖变化。所得结果表明，该流域经历了巨大的土地利用和土地涵盖了由于人口快速增长和城市化而导致的过去三十年的转型。 1984年至2015年期间，主要的足迹变化是建成土地（20.58％至49.59％）和开放水域（1984年未检测到1.74％）的扩张，以及以下领域的减少：农业用地（从43.88％到26.10％），林地（从23.78％到17.49％）和湿地（从11.76％到5.08％）。这些变化对Murchison湾的环境和水质构成了威胁，因此增加了美国国家供水和污水处理公司的水处理成本。因此，有必要采取关键和实际的措施来规范和管理土地使用，水的使用权并保护环境，特别是湿地。

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