评估土地退化中性,以指导埃塞俄比亚的可持续土地管理实践

Q2 Environmental Science
Wolde Mekuria , Rediet Girma
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引用次数: 0

摘要

自2015年《联合国防治荒漠化公约》会议提出以来,土地退化中性(LDN)概念一直指导着各国为实现可持续的社会经济和环境效益而恢复土地的努力。LDN旨在平衡土地质量的下降与恢复退化土地的举措。然而,由于预算限制,解决所有退化土地的问题是不可行的,因此需要就在何处投资资源作出战略决策。本研究以埃塞俄比亚为例,旨在:(i)评估长期(1995 - 2024)土地退化趋势,(ii)确定土地净损失或收益的区域,(iii)优先考虑解决土地退化问题的区域和行动,以及(iv)评估埃塞俄比亚景观管理举措对土地退化问题的影响。不同农业生态区的土地利用价值变化和景观变化分析结果不一。虽然一些地区,如干燥的科拉和干燥的韦纳德加地区,情况有所改善,但其他地区,包括干燥的德加和德尔贝哈地区,情况继续恶化。这些变化影响了LDN的三个主要目标:健康的生态系统、粮食安全和人类福祉。在土地利用价值变化的推动下,景观正在发生变化,这凸显出需要采取更全面的战略来缓解进一步退化和恢复受影响的土地。我们关于LDN轨迹的研究结果表明,通过多样化的可持续土地管理(SLM)实践,国家LDN的实施对于实现国家LDN目标至关重要,例如2010年至2024年间退化土地减少了6%。然而,受环境条件、土地利用做法和社会经济因素差异的影响,埃塞俄比亚农业生态区的LDN结果各不相同。这突出了定制解决方案的必要性,了解不同的恢复潜力,有针对性的资源分配,并重点关注最脆弱的地区。此外,记录埃塞俄比亚恢复工作的成功和挑战,提高其景观管理举措的有效性,并确保其SLM实践的长期可持续性对于实现LDN至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of land degradation neutrality to guide Sustainable Land Management practices in Ethiopia
Since its introduction at the 2015 UN Convention to Combat Desertification Conference, the concept of land degradation neutrality (LDN) has guided countries' efforts to restore land for sustainable socio-economic and environmental benefits. LDN aims to balance reductions in land quality with initiatives to rehabilitate degraded land. However, due to budget constraints, it is not feasible to address all degraded land, necessitating strategic decisions about where to invest resources. This study, using Ethiopia as a case study, aimed to: (i) assess the long-term (1995 - 2024) land degradation trends, (ii) identify areas of net land loss or gain, (iii) prioritize regions and actions for addressing LDN, and (iv) evaluate the impact of Ethiopia's landscape management initiatives on LDN. The analysis of LULC changes and the observed landscape transformation across diverse agroecological zones yielded mixed results. While some areas, such as the dry Kolla and dry Weyna Dega regions, showed improvement, others, including the dry Dega and der Berha zones, experienced continued degradation. These variations affected the three main objectives of LDN: healthy ecosystems, food security, and human well-being. The ongoing landscape transformation, driven by LULC changes, underscores the need for more comprehensive strategies to mitigate further degradation and restore affected lands. Our findings regarding LDN trajectories, such as a 6 % reduction in degraded land between 2010 and 2024, suggest that national LDN implementation, through diverse Sustainable Land Management (SLM) practices, is essential for achieving the country's LDN goals. However, LDN outcomes varied across Ethiopia's agroecological zones, influenced by differences in environmental conditions, land use practices, and socio-economic factors. This highlights the necessity for tailored solutions, an understanding of varying restoration potentials, targeted resource allocations, and a focus on prioritizing the most vulnerable areas. Additionally, documenting both the successes and challenges of Ethiopia's restoration efforts, enhancing the effectiveness of its landscape management initiatives, and ensuring the long-term sustainability of its SLM practices are critical for achieving LDN.
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来源期刊
Environmental Challenges
Environmental Challenges Environmental Science-Environmental Engineering
CiteScore
8.00
自引率
0.00%
发文量
249
审稿时长
8 weeks
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