无人机如何发现土地退化热点和恢复希望点?埃尔贡山地区与社区认知的综合方法

IF 3.2 2区 环境科学与生态学 Q2 ENVIRONMENTAL STUDIES Land Pub Date : 2023-12-19 DOI:10.3390/land13010001
H. Opedes, Shafiq Nedala, C. A. Mücher, J. Baartman, F. Mugagga
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引用次数: 0

摘要

在埃尔贡山等生物多样性地区,人类造成的土地退化威胁着重要的生态系统。本研究利用无人机测绘和社区洞察力来评估乌干达埃尔贡山的土地利用变化、退化和恢复情况。无人机监测(2020-2023 年)覆盖六个地点,并辅以家庭调查(n = 499)、焦点小组讨论(FDGs)和访谈。无人机图像显示,农业和人工林是主要的土地利用类型,逐渐取代了热带高山森林、灌木林和草地。无人机图像结果显示,小农自给农作导致并加剧了土地退化。六个地点中有三个发现了山体滑坡和侵占公园的情况。沟渠是采用最多的水土保持(SWC)措施。沟渠的采用因地点和作物类型而异,尤其是在埃尔冈、纳比奥科和希特卡,沟渠的采用创造了恢复潜力。访谈和专题小组讨论会表明,沟渠、草带和植树造林是土地退化的补救措施。上马纳夫瓦流域的土地利用、退化和小流域综合管理措施之间存在着复杂的相互作用,这凸显了解决山体滑坡和侵占森林问题的紧迫性。以社区为基础的倡议对于小流域综合管理实践培训至关重要,并强调长期效益。政府、当地社区和非政府组织之间的合作对于实施保护和恢复可持续森林管理至关重要,而鼓励多样化的收入来源则可以减少对土地的依赖并降低退化风险。
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How Can Drones Uncover Land Degradation Hotspots and Restoration Hopespots? An Integrated Approach in the Mount Elgon Region with Community Perceptions
Human-induced land degradation in biodiverse regions like Mount Elgon threatens vital ecosystems. This study employs drone mapping and community insights to assess land use changes, degradation, and restoration in Mount Elgon, Uganda. Drone monitoring (2020–2023) covered six sites, complemented by household surveys (n = 499), Focus Group Discussions (FDGs), and interviews. Drone imagery shows agriculture and planted forest as dominant land use types, gradually replacing tropical high forest, bushland, and grassland. Drone image results showed that smallholder subsistence farming is leading to and enhancing degradation. Landslides and encroachment into the park were detected in three of the six sites. Trenches were the most adopted Soil and Water Conservation (SWC) measure. The trench adoption varied by location and crop type, creating restoration potential, notably in Elgon, Nabyoko, and Shiteka. Interviews and FGDs revealed adoption of trenches, grass strips, and afforestation as remedies to land degradation. Complex interactions exists among land use, degradation, and SWC measures in the upper Manafwa watershed, underscoring the urgency of addressing landslides and encroachment into the forest. Community-based initiatives are vital for hands-on SWC training, emphasizing long-term benefits. Collaboration among government, local communities, and NGOs is crucial to enforce conservation and restore MENP, while encouraging diversified income sources can reduce land dependency and mitigate degradation risks.
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来源期刊
Land
Land ENVIRONMENTAL STUDIES-Nature and Landscape Conservation
CiteScore
4.90
自引率
23.10%
发文量
1927
期刊介绍: Land is an international and cross-disciplinary, peer-reviewed, open access journal of land system science, landscape, soil–sediment–water systems, urban study, land–climate interactions, water–energy–land–food (WELF) nexus, biodiversity research and health nexus, land modelling and data processing, ecosystem services, and multifunctionality and sustainability etc., published monthly online by MDPI. The International Association for Landscape Ecology (IALE), European Land-use Institute (ELI), and Landscape Institute (LI) are affiliated with Land, and their members receive a discount on the article processing charge.
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