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首页> 外文期刊>Wetlands >Spatio-Temporal Impacts of Lake Victoria Water Level Recession on the Fringing Nyando Wetland, Kenya
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Spatio-Temporal Impacts of Lake Victoria Water Level Recession on the Fringing Nyando Wetland, Kenya

机译：维多利亚湖水位衰退对边缘Nyando湿地，肯尼亚的时空影响

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摘要

Nyando is the second largest and one of the most economically important wetland ecosystems fringing Lake Victoria, Kenya. Lake level fluctuations and a range of anthropogenic activities degrade its ecological integrity, reduce its area and the quality of goods and services it provides. This study investigated the impacts of spatio-temporal variations in the lake's water levels on the wetland. Satellite images, ground truthing and semi-structured questionnaires were used to collect data on land use and community perceptions respectively. Results indicate that the shoreline receded significantly (t-stat=5.5328; p-value0.0052) with the wetland area decreasing by 31% between 1984 and 2010. Lake level recession exposed 752ha of new land at an annual rate of 29ha/year. The vulnerability of the wetland is worsened by the majority of respondents (60%) being unable to associate the lake level recession with the wetland degradation. Eighty-six percent cultivate the exposed land for agricultural production with only 4% of the respondents considering the land as ecologically sensitive and thus needing conservation. Development of a comprehensive and participatory wetland management plan, diversification of agricultural and fisheries production and introduction of ecologically sensitive alternative livelihood activities are recommended to ensure sustainable management.
机译：Nyando是肯尼亚维多利亚湖边缘的第二大湿地生态系统，也是第二大最重要的湿地生态系统。湖泊水位的波动和一系列人为活动降低了其生态完整性，减少了其面积以及提供的商品和服务的质量。这项研究调查了湖水位的时空变化对湿地的影响。卫星图像，地面实况调查和半结构化问卷分别用于收集土地使用和社区知觉的数据。结果表明，在1984年至2010年之间，海岸线明显下降（t-stat = 5.5328； p值<0.0052），湿地面积减少了31％。湖泊水平面的衰退以每年29ha /年的速度暴露了752ha新土地。大多数受访者（60％）无法将湖泊水位的衰退与湿地退化联系在一起，从而加剧了湿地的脆弱性。 86％的人将裸露的土地用于农业生产，只有4％的受访者认为这片土地具有生态敏感性，因此需要保护。建议制定一项全面的参与性湿地管理计划，实现农业和渔业生产的多样化，并引入对生态敏感的替代生计活动，以确保可持续管理。

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  • 来源
    《Wetlands》 |2018年第6期|1107-1119|共13页
  • 作者

    Okotto-Okotto Joseph; Raburu Phillip O.; Obiero Kevin O.; Obwoyere Gilbert O.; Mironga John M.; Okotto Lorna G.; Raburu Elizabeth A.;

  • 作者单位

    Lake Basin Dev Author, POB 1516-40100, Kisumu, Kenya;

    Univ Eldoret, Sch Nat Resource Management, Dept Fisheries & Aquat Sci, POB 1125-30100, Eldoret, Kenya;

    Kenya Marine & Fisheries Res Inst, Sangoro Res Stn, POB 136-40111, Kisumu, Kenya;

    Egerton Univ, Dept Nat Resources Management, POB 536-20115, Njoro, Kenya;

    Egerton Univ, Dept Geog, POB 536-20115, Njoro, Kenya;

    Jaramogi Oginga Odinga Univ Sci & Technol, Sch Spatial Planning & Nat Resource Management, POB 210-40610, Bondo, Kenya|Jaramogi Oginga Odinga Univ Sci & Technol, Ctr Res Innovat & Technol, Div Res Innovat & Outreach, POB 210-40610, Bondo, Kenya;

    Univ Eldoret, Sch Environm Studies, Dept Appl Environm Social Sci, POB 1125-30100, Eldoret, Kenya;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nyando Wetland; Lake water levels recession; Wetland degradation; Land use change;

    机译：Nyando湿地;湖水位衰退;湿地退化;土地利用变化;

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