以净初级生产力作为埃塞俄比亚土地恢复次级指标的土地生产力动态:对实现可持续发展目标的启示15

Tamirat Teshome, Girma Kabtamu
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引用次数: 0

摘要

土地生产力被描述为作为食物、纤维和燃料来源以维持人类需求的土地的生物生产能力。土地退化是我们这个时代的全球性挑战之一,由于缺乏不适当的土地使用计划和管理做法,导致粮食不安全和人口迁移。可持续森林景观恢复干预措施可以提高土地生产力,从而实现可持续发展目标15。利用《联合国防治荒漠化公约》(UNCCD) Praise-3门户下全球地球趋势观测的二次数据,以净初级生产为指标,分析了2001-2015年6个土地利用和覆被类别的土地生产力动态。埃塞俄比亚总面积为1,119,715.5平方公里。分析了从2000年基准年到2015年目标年6个不同土地利用和土地覆盖类别的土地生产力净初级生产动态。2000-2015年土地生产力变化分析表明,土地面积有204,462.9 km2(占18.26%)改善,土地面积有328,213 km2(占29.31%)退化,土地面积有555,726.8 km2(占49.63%)保持稳定。结果表明:森林覆盖面积最大,为85,126.99km2,人工土地面积最小,为95.40 km2;草地稳定地面积最大,为97,547.88 km2,水体稳定地面积最小,为184.90km2。草地受胁迫最大,为97,547.88 km2,水体受胁迫最小,为184.90km2。草地退化面积最大,为37936.88 km2,人工土地退化面积最小,为98.88km2。即使;埃塞俄比亚通过可持续的森林/土地管理进行了渐进式土地恢复干预,改善土地的比例为18.26%,远低于比例退化面积的29.31%。随着人口的急剧增长,农村地区城市化趋势迅速发展,由于土地退化,大片地区面临压力,这意味着需要更多的努力来扭转土地退化,提高生产力,以增加土地的生物和经济回报。因此;需要制定更多的可持续森林管理战略和方案,使更多土地的生产力得到提高,以实现埃塞俄比亚到2030年实现土地退化零增长的国家目标;最终扭转土地退化和防治荒漠化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
DYNAMICS OF LAND PRODUCTIVITY IN TERMS OF NET PRIMARY PRODUCTION AS SUB-INDICATOR FOR LAND RESTORATION IN ETHIOPIA: IMPLICATION FOR IMPLEMENTATION OF SUSTAINABLE DEVELOPMENT GOAL-15
Land productivity is described as biological productive capacity of a land used as source of food, fiber and fuel to sustain human needs. Land degradation is one of global challenges of our time resulting to food insecurity and migration of people due to lack of inappropriate land use plan and management practices.  Sustainable forest land scape restoration interventions can improve land productivity in meeting for Sustainable Development Goal-15. Study was conducted to analyze dynamics of land productivity in terms of net primary production on six land use and cover class from 2001-2015 using secondary information from Global Earth Trend Observation under Praise-3 portal of UNCCD.  Ethiopia has total land mass of 1,119,715.5 km2. The dynamics of land productivity net primary production on six different land use and land cover class were analyzed from baseline year 2000 to target year 2015. The analyses of land productivity change from 2000-2015 showed that a land mass 204,462.9 km2 accounting 18.26% was improved, while, 328,213 km2  accounting 29.31% was degraded and land mass of 555,726.8 km2 accounting  49.63% was remained stable. Result indicated that specifically tree-covered area exhibited the highest productive land by 85,126.99km2, while the least land improvement was exhibited on artificial land by 95.40 km2. Similarly, grass land exhibited the highest stable land by 97,547.88 km2, while the least was exhibited on water bodies by 184.90km2. On the other hand, grass land exhibited the highest stressed land by 97,547.88 km2, while the least was exhibited by water body 184.90km2. Grass land exhibited the highest declined land by 37,936.88 km2, while the least was exhibited on artificial land by 98.88km2. Even though; Ethiopia has made progressive land restoration intervention through sustainable forest/land management, the proportion of improved land is 18.26% which is much lower than the area proportionally degraded by 29.31%. There was  fast trend of urbanization in rural area with drastic population growth  where large area  is being under pressure due to degradation which implies more efforts is needed in reversing land degradation and increase the productivity for increasing the biological and economic return from land.  Therefore; additional sustainable forest management strategies and programs are needed to be put in place to bring more land under improved in productivity in line with meeting the national land degradation neutrality targets of Ethiopia by 2030; that ultimately reverse land degradation and combat desertification.
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