干旱区生态环境知识资源中心(Arid): Impact of Drought on Land Productivity and Degradation in the Brazilian Semiarid Region

Arid

DOI	10.3390/land12050954
	Impact of Drought on Land Productivity and Degradation in the Brazilian Semiarid Region
	Paredes-Trejo, Franklin; Barbosa, Humberto Alves; Daldegan, Gabriel Antunes; Teich, Ingrid; Garcia, Cesar Luis; Kumar, T. V. Lakshmi; Buriti, Catarina de Oliveira
通讯作者	Paredes-Trejo, F
来源期刊	LAND
EISSN	2073-445X
出版年	2023
卷号	12 期号:5
英文摘要	The Brazilian semiarid region (BSR) has faced severe drought over the last three decades, which has led to a significant decline in land productivity, posing a considerable threat to food security and the local economy and communities. The United Nations Convention to Combat Desertification (UNCCD) has proposed the use of Earth observation-derived vegetation indices for monitoring land degradation across regions. In this study, we aim to evaluate three comprehensive UNCCD-recommended land productivity dynamic (LPD) approaches in the BSR by utilizing the standardized precipitation-evapotranspiration index (SPEI) at 12-month time scales as a benchmark drought index obtained from ground-based measurements. Our findings indicate that the LPD methods utilizing residual trends analysis (RESTREND), Trends.Earth (TE), and the Food and Agricultural Organization's World Overview of Conservation Approaches and Technologies (FAO-WOCAT) are best suited for identifying degraded land areas in the BSR region compared to other approaches. However, it is advisable to use these methods with caution, since they do not fully capture the impact of drought on vegetation and may result in underestimating the extent of degraded areas. The RESTREND-based LPD, TE, and FAO-WOCAT estimate that the BSR region reached 213,248 km(2), 248,075 km(2), and 246,783 km(2) of degraded land, respectively, between 2001 and 2015. These findings may be valuable for decision-makers involved in land management and conservation efforts in the Sertao region of Brazil.
英文关键词	land degradation desertification land use cover change remote sensing NDVI
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:000998226800001
WOS关键词	RESIDUAL TREND ANALYSIS ; NORTHEAST BRAZIL ; RAINFALL VARIABILITY ; TIME-SERIES ; EVAPOTRANSPIRATION ; NEUTRALITY ; DYNAMICS ; MATRIX
WOS类目	Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397657
推荐引用方式 GB/T 7714	Paredes-Trejo, Franklin,Barbosa, Humberto Alves,Daldegan, Gabriel Antunes,et al. Impact of Drought on Land Productivity and Degradation in the Brazilian Semiarid Region[J],2023,12(5).
APA	Paredes-Trejo, Franklin.,Barbosa, Humberto Alves.,Daldegan, Gabriel Antunes.,Teich, Ingrid.,Garcia, Cesar Luis.,...&Buriti, Catarina de Oliveira.(2023).Impact of Drought on Land Productivity and Degradation in the Brazilian Semiarid Region.LAND,12(5).
MLA	Paredes-Trejo, Franklin,et al."Impact of Drought on Land Productivity and Degradation in the Brazilian Semiarid Region".LAND 12.5(2023).