干旱区生态环境知识资源中心(Arid): EXTREME RAINFALL EVENTS CLASSIFICATION ON AREA AFFECTED BY SANDIZATION PROCESSES IN SOUTHWESTERN OF RIO GRANDE DO SUL STATE, BRAZIL

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	EXTREME RAINFALL EVENTS CLASSIFICATION ON AREA AFFECTED BY SANDIZATION PROCESSES IN SOUTHWESTERN OF RIO GRANDE DO SUL STATE, BRAZIL
	Binda, Andrey Luis; Verdum, Roberto
通讯作者	Binda, AL
来源期刊	GEOGRAPHIA-UFF
ISSN	1517-7793
出版年	2019
卷号	21 期号:47 页码:97-114
英文摘要	Sand spots are remarkable features in the landscape of the southern Brazil grasslands. Although initially treated as deserts, the genesis of the sand deposits is due to the current humid climate, mainly from the action of torrential rains as a triggering element of the sandization processes. These processes are highly dynamic in the time and the space scales, so that the sand deposits presents expansion/retraction, depending substantially on the rainfall regime (excess, reduction or absence). In this sense, the objective of this paper is to present the importance of the classification of the standard-years/months as a basis for the recognition of extreme rainfall events on an area affected by sandization processes in the southwestern of Rio Grande do Sul State, Brazil. The results indicate that the standard-years classification are categorically associated of the increase in the number of rainy days. which induce the increase/reduction of annual totals. Over the years, there have been successions of rainy/dry standard-years, characterizing periods markedly related to the increase/reduction of total precipitation. Rainfall also presents high variability on a monthly basis. However, rainy and dry standard-months occurred more frequently, demonstrating that intensification may occur in the sandization processes. This occurs when a dry standard-month is followed by a rainy one, interfering mostly in the herbaceous vegetation on the surface formations and soils of grassland.
英文关键词	standard-years classification standard-months classification rainy days rainfall variability
类型	Article
语种	葡萄牙语
收录类别	ESCI
WOS记录号	WOS:000516829200009
WOS类目	Geography
WOS研究方向	Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334116
作者单位	[Binda, Andrey Luis] Univ Fed Fronteira Sul, Geog, Av Fernando Machado 108E, BR-89802112 Chapeco, SC, Brazil; [Verdum, Roberto] Univ Fed Rio Grande do Sul, Dept Geog, Av Bento Concalves 9500 Predio 43136-216 Agron, BR-91540000 Porto Alegre, RS, Brazil
推荐引用方式 GB/T 7714	Binda, Andrey Luis,Verdum, Roberto. EXTREME RAINFALL EVENTS CLASSIFICATION ON AREA AFFECTED BY SANDIZATION PROCESSES IN SOUTHWESTERN OF RIO GRANDE DO SUL STATE, BRAZIL[J],2019,21(47):97-114.
APA	Binda, Andrey Luis,&Verdum, Roberto.(2019).EXTREME RAINFALL EVENTS CLASSIFICATION ON AREA AFFECTED BY SANDIZATION PROCESSES IN SOUTHWESTERN OF RIO GRANDE DO SUL STATE, BRAZIL.GEOGRAPHIA-UFF,21(47),97-114.
MLA	Binda, Andrey Luis,et al."EXTREME RAINFALL EVENTS CLASSIFICATION ON AREA AFFECTED BY SANDIZATION PROCESSES IN SOUTHWESTERN OF RIO GRANDE DO SUL STATE, BRAZIL".GEOGRAPHIA-UFF 21.47(2019):97-114.