阿姆哈拉地区人工林:挑战和未来改善的最佳措施

W. Tadesse, A. Gezahgne, T. Tesema, B. Shibabaw, B. Tefera, H. Kassa
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引用次数: 13

摘要

埃塞俄比亚人工林的总面积估计为972 000公顷。就物种而言,桉树在目前的人工林中占主导地位,覆盖率超过90%。阿姆哈拉地区人工林的总面积估计为684 000公顷,其中工业人工林为44 600公顷,非工业小型私人人工林为639 400公顷。在埃塞俄比亚,不同树种种植期间和种植后适当的造林措施的应用并不发达。因此,本文的目的是确定阿姆哈拉民族地区邦的有效种植做法,这些做法可以推广到该国其他类似的农业生态地区。该研究于2013年9月至2015年10月期间在阿维区Fagta Lekoma区和南贡德区Lay Gayent区的ANRS进行。采用多阶段抽样方法选取样本家庭。小农种植实践的最佳范例分别是Fagita Lekoma地区以金合欢为基础的小农种植园,以及Lay Gayent地区和Mecha地区以金合欢和金合欢为基础的小农种植园。在选择树种时考虑了适应性、生长率、与其他土地利用的相容性和对植树目标的适宜性。在确定最佳人工林做法时考虑了人工林的造林管理,特别是造林间距、种植技术和抚育作业。在人工林生态影响方面,135人(75.4%)认为山竹人工林对邻近农田的土壤、作物生产力和水资源有不利影响。在公认的造林管理差距中,区域专家和农民评价狭窄的间距是主要的制约因素。经济问题,如缺乏足够的附加值,缺乏分类和产品多样化已被确定为重大的挑战。在埃塞俄比亚种植园项目中适当实施最佳种植园管理实践将显著改善该国的森林覆盖率,并增加林业部门对地方和国家经济的贡献。
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Plantation Forests in Amhara Region: Challenges and Best Measures for Future Improvements
The total area of plantation forests in Ethiopia is estimated at 972,000 ha. Species wise, eucalyptus dominates the current plantation forests, covering more than 90%. The total area of plantation forests in Amhara region is estimated at 684,000 ha, of which Industrial Plantations are 44, 600 ha and Non-industrial Small-scale Private Plantations are 639,400 ha. The application of appropriate silvicultural practice during and after planting of different plantation species is not well developed in Ethiopia. Therefore, the objective of this paper was to identify effective plantation practices in the Amhara National Regional State that can be scaled out in other similar agro ecological areas of the country. The study was conducted between September 2013 and October 2015 in ANRS in Fagta Lekoma District of Awi zone and Lay Gayent District of South Gonder Zone. Multistage sampling technique was used to select sample households. The best example of smallholder plantation practices are Acacia decurrens based smallholder plantations in Fagita Lekoma District and E. globulus and E. camaldulensis based plantation in Lay Gayent District and Mecha District, respectively. Adaptability, growth rate, compatibility to the other land uses and suitability to the objective of tree planting were considered in selecting the tree species for planting. Silvicultural management of the plantation especially those of spacing, planting techniques and tending operations were considered in identifying the best plantation practices. In regard to ecological impacts of plantation 135 respondents (75.4%) agreed that plantation of E. camaldulensis have adverse effect on the soil, crop productivity of the adjacent farm land and water resources. Among recognized silvicultural management gaps, narrow spacing has been evaluated as the major constraint by regional experts and farmers. Economic issues like lack of adequate value addition, lack of assortment and product diversification has been identified as significantly important challenges. Proper implementation of best plantation management practices in Ethiopian plantation programs will significantly improve the forest cover of the country and increase the contribution of the forestry sector to the local and national economies.
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