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A framework for investigating the land degradation neutrality – Disaster risk reduction nexus at the sub-national scales
Journal of Arid Environments ( IF 2.6 ) Pub Date : 2021-09-21 , DOI: 10.1016/j.jaridenv.2021.104635
Mario J. Al Sayah 1, 2 , Chadi Abdallah 1 , Rita Der Sarkissian 3 , Mohammad Abboud 4
Affiliation  

Specific guidelines are needed to overcome dichotomous classifications of lands into degraded or not for leveraging the Land Degradation Neutrality (LDN) concept. Overlooking degrading lands or those at risk of degradation can block LDN. Therefore, this paper proposes a detailed land classification method, and complements LDN with an indicator α (wildfires, landslides and insights on aridity). Indicator α taps the rarely studied LDN-natural hazards nexus. For separating degrading, degraded and non-degraded lands, twelve categories were defined, and indicators were then established. Subsequently, a land potential-hazard informed LDN intervention was planned. These methods target sub-national scales via the Lebanese/Mediterranean Aley district. Findings first revealed that Aley's land cover developed without considering land potential or hazard potentiality. Second, land status categories are distributed as 65% stable (of which 20.18 are lightly used), 8.14% non-degraded (adequately used, recovered and improving), 13.67% degraded, and 13.13% at risk of degradation. However, the district risks shifting towards less healthy land states due to unplanned development and natural hazards inconsideration. Accordingly, the LDN intervention targeted the stable/lightly used, at risk of degradation-/lightly used, overused and lightly used lands for optimization. This approach shifted 33.33% of Aley to adequately used lands, increasing the latter from 8.05% to 41.38%.



中文翻译:

调查土地退化中性的框架——在次国家尺度上减少灾害风险的关系

为了利用土地退化中性 (LDN) 概念,需要具体的指导方针来克服将土地分为退化或未退化的二分法。忽视退化土地或面临退化风险的土地可能会阻碍 LDN。因此,本文提出了一种详细的土地分类方法,并用指标 α(野火、滑坡和干旱见解)补充 LDN。指标 α 挖掘了很少被研究的 LDN 与自然灾害的关系。划分退化土地、退化土地和非退化土地,定义了十二个类别,然后建立了指标。随后,计划进行土地潜在危险告知 LDN 干预。这些方法通过黎巴嫩/地中海 Aley 区针对次国家级规模。调查结果首先表明,Aley' 未考虑土地潜力或危险潜力而开发的土地覆盖。其次,土地状况类别分布为 65% 的稳定(其中 20.18 个轻度使用)、8.14% 未退化(充分利用、恢复和改善)、13.67% 退化和 13.13% 有退化风险。然而,由于计划外的开发和对自然灾害的忽视,该地区有可能转向不太健康的土地状态。因此,LDN 干预针对稳定/轻度使用、面临退化风险-/轻度使用、过度使用和轻度使用的土地进行优化。这种方法将 Aley 的 33.33% 转移到充分利用的土地上,将后者从 8.05% 增加到 41.38%。恢复和改善),13.67% 退化,13.13% 有退化风险。然而,由于计划外的开发和对自然灾害的忽视,该地区有可能转向不太健康的土地状态。因此,LDN 干预针对稳定/轻度使用、面临退化风险-/轻度使用、过度使用和轻度使用的土地进行优化。这种方法将 Aley 的 33.33% 转移到充分利用的土地上,将后者从 8.05% 增加到 41.38%。恢复和改善),13.67% 退化,13.13% 有退化风险。然而,由于计划外的开发和对自然灾害的忽视,该地区有可能转向不太健康的土地状态。因此,LDN 干预针对稳定/轻度使用、面临退化风险-/轻度使用、过度使用和轻度使用的土地进行优化。这种方法将 Aley 的 33.33% 转移到充分利用的土地上,将后者从 8.05% 增加到 41.38%。

更新日期:2021-09-21
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