Biophysical and Economic Assessment of Carbon Dynamics in the Itajaí-Açu Valley Basin in Southern Brazil.

IF 8.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Fernanda Dal Bosco, Julio Cesar Refosco, Everton Vogel
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Abstract

The aim of this study is to conduct a biophysical and economic assessment of carbon stocks associated with changes in land use and cover (LULC) in the Itajaí-Açu Valley Basin (IVB). The IVB is immersed in the Atlantic rainforest, considered one of the most diverse, as well as one of the most threatened forests on the planet. The Valley is also home to important urban and industrial centres located along the riverbanks. Since its colonisation in the second half of the 19th century, the region has constantly suffered from natural disasters, such as floods and landslides. With the expected escalation in extreme weather events in the near future due to climate change, these natural disasters may increase in intensity and frequency. Maps of LULC and the InVEST program were used to quantify and value the carbon stock and sequestration for three periods. The results show that between 2000 and 2020, there was an increase in forestry (354.64%), mosaic (57.43%) and pasture (43.08%) areas in the IVB, while a decrease was observed for Natural Forest (-4.38%), non-forest natural formation (-69.56%) and agriculture (-68.69%). The carbon stock values were 259,328,452 Mg C in 2000, 265,079,768 Mg C in 2010 and 262,577,960 Mg C in 2020. The carbon sequestration in the period 2000-2010 represented an economic benefit of US$138 million. Conversely, between 2010 and 2020, there was net carbon emissions equivalent to US$60 million. Over the entire period analysed, there was a gain of US$78 million in ecosystem services related to carbon stocks. Targeted policies, such as Payment for Ecosystem Services programs, market-based incentives for carbon credits, and public investments in forest conservation and restoration, can bring economic, social, and ecological benefits, ensuring the continued provision of ecosystem services in the region.

巴西南部Itajaí-Açu河谷盆地碳动态的生物物理和经济评价。
本研究的目的是对Itajaí-Açu流域(IVB)与土地利用和覆盖(LULC)变化相关的碳储量进行生物物理和经济评估。IVB沉浸在大西洋雨林中,被认为是地球上最多样化的森林之一,也是最受威胁的森林之一。河谷也是沿河岸的重要城市和工业中心的所在地。自19世纪下半叶被殖民以来,该地区不断遭受自然灾害,如洪水和山体滑坡。由于气候变化,预计在不久的将来极端天气事件将会增加,这些自然灾害的强度和频率可能会增加。利用LULC地图和InVEST项目对三个时期的碳储量和固碳量进行了量化和评估。结果表明:2000 - 2020年,流域内林地面积(354.64%)、花叶林面积(57.43%)和牧场面积(43.08%)增加,天然林面积(-4.38%)、非森林自然形成面积(-69.56%)和农业面积(-68.69%)减少;2000年碳储量为259,328,452 Mg C, 2010年为265,079,768 Mg C, 2020年为262,577,960 Mg C。2000-2010年期间的碳固存产生了1.38亿美元的经济效益。相反,在2010年至2020年期间,净碳排放量相当于6000万美元。在整个分析期间,与碳储量有关的生态系统服务增加了7800万美元。有针对性的政策,如生态系统服务付费计划、基于市场的碳信用激励措施以及对森林保护和恢复的公共投资,可以带来经济、社会和生态效益,确保该地区生态系统服务的持续提供。
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来源期刊
Integrated Environmental Assessment and Management
Integrated Environmental Assessment and Management ENVIRONMENTAL SCIENCESTOXICOLOGY&nbs-TOXICOLOGY
CiteScore
5.90
自引率
6.50%
发文量
156
期刊介绍: Integrated Environmental Assessment and Management (IEAM) publishes the science underpinning environmental decision making and problem solving. Papers submitted to IEAM must link science and technical innovations to vexing regional or global environmental issues in one or more of the following core areas: Science-informed regulation, policy, and decision making Health and ecological risk and impact assessment Restoration and management of damaged ecosystems Sustaining ecosystems Managing large-scale environmental change Papers published in these broad fields of study are connected by an array of interdisciplinary engineering, management, and scientific themes, which collectively reflect the interconnectedness of the scientific, social, and environmental challenges facing our modern global society: Methods for environmental quality assessment; forecasting across a number of ecosystem uses and challenges (systems-based, cost-benefit, ecosystem services, etc.); measuring or predicting ecosystem change and adaptation Approaches that connect policy and management tools; harmonize national and international environmental regulation; merge human well-being with ecological management; develop and sustain the function of ecosystems; conceptualize, model and apply concepts of spatial and regional sustainability Assessment and management frameworks that incorporate conservation, life cycle, restoration, and sustainability; considerations for climate-induced adaptation, change and consequences, and vulnerability Environmental management applications using risk-based approaches; considerations for protecting and fostering biodiversity, as well as enhancement or protection of ecosystem services and resiliency.
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