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Dynamics of land use land cover and its impact on carbon stocks in Sub-Saharan Africa: an overview
Environment, Development and Sustainability ( IF 4.7 ) Pub Date : 2021-05-17 , DOI: 10.1007/s10668-021-01484-z
Idowu Ezekiel Olorunfemi , Ayorinde Akinlabi Olufayo , Johnson Toyin Fasinmirin , Akinola Adesuji Komolafe

Land use land cover change (LULCC) is a global environmental trend that plays a key role in worldwide environmental change and sustainable development. Substantial disturbance resulting from natural and anthropogenic activities has been witnessed in sub-Sahara Africa (SSA) over the last four decades, which is mostly due to the increasing population being experienced in Africa. One-third of emitted greenhouse gases (GHG) are attributable to LULCC and agricultural activities most especially deforestation. Soil carbon sequestration has been considered as a possible strategy to counterbalance carbon dioxide (CO2) emissions and mitigate global climate change, driven by rising concentrations of GHG in the atmosphere and global increase in temperature. The role of tropical Africa's forests in mitigating climate change has been widely acknowledged under the global treaties' Reducing Emissions from Deforestation and Degradation (REDD) initiatives. More than two-thirds of the SSA population rely on forests and woodlands for their livelihoods. Despite the importance of forests, Sub-Saharan Africa, and even the entire African continent, is experiencing an acceleration in deforestation, leading to diminished ecosystem resilience. Subsistence and commercial agriculture accounted for 10% of total forest land loss in Africa (approximately 75 million ha) between 1990 and 2010. As a result, agricultural expansion alone accounts for 70–80% of Africa's total forest loss. The challenges of implementing a policy to reduce emissions from deforestation and forest degradation, and foster conservation, sustainable management of forests, and enhancement of forest carbon stocks (REDD +) in the SSA includes interactions between a number of anthropogenic-induced factors and challenges. These factors, which are of various types (economic, institutional, etc.), cause loss of forest and forest degradation; and the challenges arising from finance, institutional and technical expertise hinder the appropriate design and implementation of national forest monitoring schemes. These challenges must be adequately addressed in order to accurately quantify the carbon budgets and implement an appropriate forest and carbon monitoring system for REDD + in SSA. Therefore, in meeting the REDD + initiatives in SSA, integrated land use management approach that enhances soil carbon sequestration potential should be given considerable systematic and scientific attention. In addition, political, socioeconomic and institutional factors that hinder sustainable forest management and land use system management must be addressed collectively.



中文翻译:

撒哈拉以南非洲土地利用土地覆盖的动态及其对碳储量的影响:概述

土地利用土地覆被变化(LULCC)是一种全球环境趋势,在全球环境变化和可持续发展中起着关键作用。在过去的四十年中,撒哈拉以南非洲地区(SSA)目睹了自然和人为活动造成的严重干扰,这主要是由于非洲人口的增加。三分之一的温室气体(GHG)归因于低碳国家和农业活动,尤其是森林砍伐。固碳被认为是抵消二氧化碳(CO 2)排放和缓解全球气候变化,这是由于大气中温室气体浓度不断上升以及全球温度升高所致。在全球条约的“减少森林砍伐和退化造成的排放”倡议中,热带非洲森林在缓解气候变化中的作用得到了广泛认可。SSA人口的三分之二以上依靠森林和林地为生。尽管森林非常重要,但撒哈拉以南非洲乃至整个非洲大陆的森林砍伐速度都在加快,导致生态系统的复原力下降。在1990年至2010年之间,生活和商业农业占非洲林地总损失的10%(约7500万公顷)。结果,仅农业扩张就占非洲总林地的70-80%。森林的总损失。在SSA中实施减少森林砍伐和森林退化造成的排放,促进养护,森林的可持续管理以及增加森林碳储量(REDD +)的政策所面临的挑战包括许多人为因素与挑战之间的相互作用。这些因素具有各种类型(经济的,制度的等),导致森林损失和森林退化;资金,机构和技术专长所带来的挑战阻碍了国家森林监测计划的适当设计和实施。必须正确应对这些挑战,以便准确量化碳预算,并为SSA中的REDD +实施适当的森林和碳监测系统。因此,为了满足SSA中的REDD +倡议,提高土壤碳固存潜力的综合土地利用管理方法应得到相当系统和科学的重视。此外,必须集体解决阻碍可持续森林管理和土地利用系统管理的政治,社会经济和体制因素。

更新日期:2021-05-17
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