Contextualizing land‐use and land‐cover change with local knowledge: A case study from Pokot Central, Kenya
Contextualizing land‐use and land‐cover change with local knowledge: A case study from Pokot Central, Kenya
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DOI：
10.1002/ldr.3961
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发表时间：
2020-10
影响因子：
4.7
通讯作者：
M. Petersen;Christoph Bergmann;Paul J. Roden;M. Nüsser
中科院分区：
文献类型：
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作者：
M. Petersen;Christoph Bergmann;Paul J. Roden;M. Nüsser
撒哈拉以南非洲干旱地区的农村社区主要依靠其自然资源基础维持生计。过去几十年来，这些环境发生了前所未有的变化，今后可能会加剧，土地使用者需要制定可持续的适应战略。本研究旨在通过整合当地知识和遥感，确定1986年至2017年撒哈拉以南干旱地区土地利用和土地覆盖（LULC）变化及其驱动因素。当地知识和环境感知被用作定义LULC类别以及培训和验证变化检测的基础。这项研究发现显着的LULC的变化，在41%的调查面积，并确定灌木侵入前牧场的主要LULC变化与林地增加了39%，草地减少了74%。当地受访者认为这一过程是严重退化，并与不断变化的管理制度和不可靠的降雨模式有关。森林砍伐和林地稀疏占检测到的变化的44%，可以追溯到增加居住和农业，尽管当地社区也确定木炭生产是一个驱动因素。遥感与当地知识的结合提供了对肯尼亚中部Pokot土地利用/土地利用变化的整体看法，并为旱地可持续发展道路所需的针对具体地点和以行为者为中心的管理方法提供了坚实的基础。我们的研究结果强调，在制定旱地适应战略和管理准则时，需要包括当地行为者。
Rural communities in the drylands of sub‐Saharan Africa (SSA) derive their livelihoods primarily from their natural resource base. Unprecedented changes in these environments over the past few decades are likely to intensify in the future and land users need to develop sustainable adaptation strategies. This study aims to identify land‐use and land‐cover (LULC) changes and their drivers in a sub‐Saharan dryland, between 1986 and 2017, by integrating local knowledge and remote sensing. Local knowledge and environmental perception are used as the basis for defining LULC classes and for training and validation of change detection. This study detects significant LULC changes in 41% of the investigated area, and identifies bush encroachment into former pastures as the dominant LULC change with an increase of woodland by 39% and a decrease of grassland by 74%. This process is perceived as severe degradation by local respondents and is linked to changing management regimes and unreliable rainfall patterns. Deforestation and woodland thinning account for 44% of the detected changes, and can be traced back to increased habitation and farming, although the local community also identifies charcoal production as a driving factor. The integration of remote sensing and local knowledge provides a holistic view on LULC change in Pokot Central, Kenya and offers a solid base for site‐specific and actor‐centred management approaches necessary for sustainable pathways of drylands. Our results emphasize the need to include local actors in the development of adaptation strategies and management guidelines for drylands.