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首页> 外文期刊>International journal of ecohydrology and hydrobiology >Ecological conditions and ecosystem services of wetlands in the Lake Tana Area, Ethiopia
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Ecological conditions and ecosystem services of wetlands in the Lake Tana Area, Ethiopia

机译：埃塞俄比亚塔纳地区湿地生态条件与生态系统服务

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摘要

Although wetlands are known to provide vital ecosystem services, the current state of wetlands in Ethiopia in terms of their ecosystem service components remains poorly understood. Wetlands located in the UNESCO Lake Tana Biosphere Reserve have been highly degraded, but possess highly valuable resources. Therefore, this study sought to assess the major ecological states and identify the main ecosystem services (ESs), along with local people's perceptions of wetland management. Nine wetlands were selected from pristine/reference, agricultural and urban land uses of the Lake Tana area. Numerous ESs were identified, categorized into four main ecosystem services, analyzed using a conceptual model adopted for this purpose, and their ecological conditions were assessed using a range of methods. The results revealed that the provisioning and cultural services were found to surpass the regulatory and supporting services of wetlands in agricultural and urban types, as compared to wetlands located in pristine areas. Although most of the local residents positively viewed wetland regulation and supporting services, weak policy and decision support such as wetland use planning, investment interventions and communal land ownership, and poor development of diversified livelihood were found to pose major challenges to sustainable utilization of wetland resources. The range of plant species diversity among the impaired wetlands was observed to be related to the degree of disturbance, with urban and agricultural wetlands being highly degraded as compared to pristine wetlands. Moreover, these impaired wetlands were found to be invaded by upland and exotic weeds, out-competing the socioeconomically and ecologically important native species. (C) 2018 The Author. Published by Elsevier B.V. on behalf of European Regional Centre for Ecohydrology of the Polish Academy of Sciences.
机译：虽然已知湿地提供重要的生态系统服务，但埃塞俄比亚的当前湿地的现状在其生态系统服务部件方面仍然很清楚。位于联合国教科文组织塔纳生物圈储备的湿地已经缓解，但具有高度宝贵的资源。因此，这项研究试图评估主要生态国家，并确定主要的生态系统服务（ESS）以及当地人民对湿地管理的看法。九湿地选自塔纳地区的原始/参考，农业和城市土地利用。确定了许多ESS，分为四个主要生态系统服务，使用为此目的采用的概念模型进行分析，并且使用一系列方法评估其生态条件。结果表明，与位于原始地区的湿地相比，该拨款和文化服务将超越农业和城市类型湿地的监管和支持服务。虽然大多数当地居民在积极地看待湿地监管和支持服务，弱势政策和决策支持，如湿地使用规划，投资干预和公共土地所有权，以及多元化的生计的差，对湿地资源的可持续利用产生重大挑战。观察到湿地受损湿地之间的植物物种多样性与扰动程度有关，与原始湿地相比，城市和农业湿地具有高度退化。此外，发现这些受损的湿地被高地和异国情调的杂草侵入，竞争社会经济和生态重要的天然物种。 （c）2018年作者。由elsevier b.v出版。代表欧洲区域科学科学院生态学学中心。

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