干旱区生态环境知识资源中心(Arid): Drought variability and land degradation in the Amazon River basin

Arid

DOI	10.3389/feart.2022.939908
	Drought variability and land degradation in the Amazon River basin
	Paredes-Trejo, Franklin; Barbosa, Humberto; Giovannettone, Jason; Kumar, T. V. Lakshmi; Kumar Thakur, Manoj; Buriti, Catarina De Oliveira
通讯作者	Paredes-Trejo, F
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2022
卷号	10
英文摘要	The Amazon River Basin (ARB) plays an essential role in global climate regulation. Recent studies have revealed signs of increasing drought conditions in different parts of the basin. Although human activities have degraded large areas, little work has been done to assess whether prolonged drought may exacerbate land degradation. Among different methods for monitoring land degradation, the Sustainable Development Goal (SDG) indicator 15.3.1 adopted by the United Nations Convention to Combat Desertification (UNCCD) allows a comprehensive assessment of the impacts of land degradation due to its multi-factor nature and scalability. The aims of this study are twofold: 1) to assess the status of land degradation using the SDG indicator 15.3.1 from 2001 to 2020 in the Amazon basin; and 2) to explore the relationship between the detectability of land degradation using the UNCCD approach and long-term drought severity. The Standardized Precipitation Index (SPI), Standardized Precipitation-Evapotranspiration Index (SPEI), and self-calibrating Palmer Drought Severity Index (scPDSI) were used as drought indices. The results revealed 757,704 km(2) (12.67% of the basin) as degraded land, which was reflected by a downward trend in land productivity dynamics followed by the combined downward trend in land productivity, Soil Organic Carbon (SOC) degradation, and land cover degradation. The largest land degradation hotspot was identified along the southwestern boundary of the Amazon River Basin. Furthermore, there was strong evidence that the detection of land degradation through SDG indicator 15.3.1 is sensitive to long-term drought, particularly when applied to rainfed croplands.
英文关键词	Amazonia drought Amazon River basin land degradation land-use change standardized precipitation index spatiotemporal droughts
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000844662000001
WOS关键词	BRAZILIAN AMAZON ; SPATIOTEMPORAL VARIABILITY ; USE EFFICIENCY ; CLIMATE ; DEFORESTATION ; AGREEMENT ; DYNAMICS ; PATTERNS ; EXTREMES ; RAINFALL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392691
推荐引用方式 GB/T 7714	Paredes-Trejo, Franklin,Barbosa, Humberto,Giovannettone, Jason,et al. Drought variability and land degradation in the Amazon River basin[J],2022,10.
APA	Paredes-Trejo, Franklin,Barbosa, Humberto,Giovannettone, Jason,Kumar, T. V. Lakshmi,Kumar Thakur, Manoj,&Buriti, Catarina De Oliveira.(2022).Drought variability and land degradation in the Amazon River basin.FRONTIERS IN EARTH SCIENCE,10.
MLA	Paredes-Trejo, Franklin,et al."Drought variability and land degradation in the Amazon River basin".FRONTIERS IN EARTH SCIENCE 10(2022).