沿海动态及其对喀麦隆图贝沿岸地区渔业社区发展的影响

Oben Alexander Tataw, W. Mvo, N. R. Akoh, Kang Edwin Mua
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引用次数: 0

摘要

世界上的海岸线为大多数社区的生计提供了重要的发展利益。由于社区靠近海岸线,因此不需要通过捕鱼和运输来开发水资源。鉴于海岸线受到变化的影响,本研究打算调查沿海动态及其对图贝沿岸地区渔业社区发展的影响。采用描述性研究设计,样本量为300名受访者,采用随机抽样技术。数据收集自第一手资料和第二手资料,使用算术平均值和ArcGIS 10.2进行定性和定量分析。利用海岸线GPS路径点,与1984年、2000年和2017年的Landsat图像相匹配,观察了1984年至2017年的沿海动态。结果表明,海平面上升引起的长期反冲过程引起了海岸侵蚀和岸线群落的淹没。结果显示,从1984年到2017年,图贝的海岸线以每年9.56米的速度退缩。沿图贝海岸线的退缩率同样变化,表明1984年至2017年,Cap海岸线退缩了452.4米,而1984年至2017年,Itiekot-Chekiri和小图贝海岸线分别退缩了254.87米和239.61米。这些沿海渔业社区容易受到海岸侵蚀、定居点淹没、渔棚被毁、人民流离失所和沿海活动中断的影响,造成巨大的社会经济损失。该研究选择通过使用沙袋、海堤和建立红树林缓冲区来稳定海岸线,以减少渔业社区对Toube海岸动态强度的暴露。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Coastal Dynamics and Implication for Development of the Fishing Communities Along the Shoreline Region of Toube, Cameroon
The world’s coastlines provide essential development benefits to most communities for livelihood sustenance. The proximity of communities to coastlines elects the need to exploit the water resources through fishing and transportation. Given that coastlines are subjected to changes, this study intends to investigate coastal dynamics and implication for development of the fishing communities along the shoreline region of Toube. A descriptive research design was adopted with a sample size of 300 respondents which employed a random sampling technique. Data was collected from both primary and secondary sources and was analyzed qualitatively and quantitatively by the use of arithmetic mean and ArcGIS 10.2. The coastal dynamics between 1984 and 2017 were observed using shoreline GPS Way Point that was matched by Landsat images of 1984, 2000 and 2017. Findings showed that prolonged backwash process caused by sea level rise provoked coastal erosion and submergence of shoreline communities. The results revealed that between 1984 and 2017, the shoreline of Toube has been retreating at a rate of 9.56 m per year. The retreat rate equally varies along Toube coastlines revealing that Cap shoreline has retreated some 452.4 m between 1984 and 2017 while Itiekot-Chekiri and Small Toube retreated by 254.87 m and 239.61 m respectively between 1984 and 2017. These coastal fishing communities are vulnerable to coastal erosion, settlement submergence, destruction of fishing barns, displacement of people and disruption of coastal activities with huge socio-economic losses. The study opts for the stabilization of the shorelines through the use of sand bags, sea walls and the creation of buffer zone with mangrove trees in order to reduce the exposure of the fishing communities to the intensity of the coastal dynamics in Toube.
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