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Mangrove cover and cover change analysis in the transboundary area of Kenya and Tanzania during 1986–2016
Journal of the Indian Ocean Region Pub Date : 2019-05-04 , DOI: 10.1080/19480881.2019.1613868
Fredrick Mungai 1 , James Kairo 2 , John Mironga 1 , Bernard Kirui 3 , Mwita Mangora 4 , Nico Koedam 5
Affiliation  

ABSTRACT Mangrove forests are among the most threatened ecosystems on earth. Some of these forests traverse national boundaries complicating their management due to differences in governance structures between countries. To improve the management of transboundary species regular monitoring is essential. Remotely sensed data were used to estimate forest cover and analyze conditions of mangroves in the proposed transboundary conservation area (TBCA) between Kenya and Tanzania. Image analysis was performed using unsupervised and supervised classification methods. The transboundary mangroves cover an estimated 11,906 ha; 55% being in Kenya, 45% in Tanzania. Ceriops tagal, Avicennia marina, and Rhizophora mucronata species co-dominate the mangroves of the transboundary area. The hotspot for loss and degradation of mangrove in the TBCA is Vanga in Kenya with a loss of 27 ha/yr. Harvesting of mangrove wood products have contributed to the loss of mangroves in the transboundary area. TBCA formation could play a critical role in ensuring sustainable mangrove resources utilization.

中文翻译:

1986-2016年肯尼亚和坦桑尼亚跨界地区红树林覆盖率和覆盖率变化分析

摘要红树林是地球上受威胁最严重的生态系统之一。由于国家间治理结构的差异,其中一些森林跨越国界,使其管理复杂化。为了改善跨界物种的管理,定期监测是必不可少的。遥感数据用于估计肯尼亚和坦桑尼亚之间拟建的跨界保护区 (TBCA) 的森林覆盖率和分析红树林的状况。使用无监督和监督分类方法进行图像分析。跨界红树林面积估计为 11,906 公顷;55% 在肯尼亚,45% 在坦桑尼亚。Ceriops tagal、Avicennia marina 和 Rhizophora mucronata 物种共同占据了跨境区域的红树林。TBCA 中红树林损失和退化的热点是肯尼亚的万加,每年损失 27 公顷。红树林木制品的采伐导致了跨界地区红树林的消失​​。TBCA 的形成可以在确保可持续利用红树林资源方面发挥关键作用。
更新日期:2019-05-04
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