Gidey Tesfay, Hagos Daniel, Juhar Hagos Mohammedseid, Solomon Negasi, Negussie Aklilu, Crous-Duran Josep, Oliveira Tânia Sofia, Abiyu Abrham, Palma Joao Hn
Department of Plant Science, College of Agriculture and Environmental Sciences, University of Adigrat, P.O. Box 50, Adigrat, Ethiopia.
Department of Natural Resources Management, College of Agriculture and Environmental Sciences, University of Adigrat, P.O. Box 50, Adigrat, Ethiopia.
Heliyon. 2020 Oct 3;6(10):e05139. doi: 10.1016/j.heliyon.2020.e05139. eCollection 2020 Oct.
woodland provides considerable economic, ecological and socio-cultural benefits in the drylands of Ethiopia. However, its populations are in rapid decline due to human pressure and environmental degradation. As a consequence, the species is now considered being endangered, demanding an urgent conservation intervention to sustain its existence. This study was carried out in the Abergele district, northern Ethiopia, with objectives to characterize the current population structure of and prioritize its potential conservation intervention alternatives using Analytical Hierarchy Process (AHP) modelling techniques. The woody species related data were collected from 33 sample plots randomly established in the study area. Data related to the potential intervention alternatives and their evaluating criteria were collected from experts, personal experiences and intensive literature reviews, and then validated using stakeholders' focus group discussion. Four candidate alternatives were then considered for the AHP: 1) free grazing with no tapping resting period (FGNTR), 2) free grazing with a rotational tapping (FGRT), 3) area exclosure with medium tapping resting period (AEMTR), and 4) area exclosure with long tapping resting period (AELTR). The results showed that the population structure of is unstable and is characterized by low density (266 trees ha), absence of regeneration and saplings (DBH<10 cm) due to different interrelated disturbances such as overgrazing, over tapping, pests, agricultural expansion and poor managements. The overall priority ranking value of all stakeholders using the AHP techniques also indicated that AEMTR (with overall rank value of 0.352) and AELTR (0.294) as the best alternatives strategies, respectively, for sustainable woodland conservation. For the success of these strategies, their economic impacts at their early implementation stages (5-10 years) should be minimized by collecting different non-timber forest products from the woodland. Continuous capacity building training on sustainable utilizations and managements of woodland should also be provided for all relevant stakeholders.
在埃塞俄比亚的干旱地区，林地带来了可观的经济、生态和社会文化效益。然而，由于人类压力和环境退化，其数量正在迅速减少。因此，该物种现在被认为处于濒危状态，迫切需要进行保护干预以维持其生存。本研究在埃塞俄比亚北部的阿贝盖勒地区开展，目的是描述[具体树种]的当前种群结构，并使用层次分析法（AHP）建模技术确定其潜在保护干预方案的优先级。与木本物种相关的数据是从研究区域内随机设立的33个样地收集的。与潜在干预方案及其评估标准相关的数据是从专家、个人经验和深入的文献综述中收集的，然后通过利益相关者焦点小组讨论进行验证。然后为层次分析法考虑了四个候选方案：1）无砍伐休耕期的自由放牧（FGNTR），2）轮伐砍伐的自由放牧（FGRT），3）中等砍伐休耕期的区域封禁（AEMTR），4）长砍伐休耕期的区域封禁（AELTR）。结果表明，[具体树种]的种群结构不稳定，其特征是密度低（每公顷266棵树），由于过度放牧、过度砍伐、病虫害、农业扩张和管理不善等不同相互关联的干扰，缺乏更新和幼树（胸径<10厘米）。使用层次分析法技术的所有利益相关者的总体优先级排序值还表明，AEMTR（总体排名值为0.352）和AELTR（0.294）分别是[具体树种]林地可持续保护的最佳替代策略。为了这些策略的成功实施，应通过从林地收集不同的非木材林产品，在其早期实施阶段（5 - 10年）尽量减少其经济影响。还应为所有相关利益者提供关于[具体树种]林地可持续利用和管理的持续能力建设培训。
