Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.5935/1806-6690.20170029 |
Land use impact on soil erosion at different scales in the Brazilian semi-arid | |
Neves dos Santos, Julio Cesar1; de Andrade, Eunice Maia2; Augusto Medeiros, Pedro Henrique3; Simas Guerreiro, Maria Joao4; de Queiroz Palacio, Helba Araujo5 | |
通讯作者 | Neves dos Santos, Julio Cesar |
来源期刊 | REVISTA CIENCIA AGRONOMICA
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ISSN | 1806-6690 |
出版年 | 2017 |
卷号 | 48期号:2页码:251-260 |
英文摘要 | Erosion and sediment transport processes are strongly dependent on the spatial scale and land use. The objective of this study is to analyse the effects of slash and burn of vegetation followed by grass cultivation for grazing, on the hydrological and sedimentological behaviour at different spatial scales in a semiarid region in Brazil. Rainfall, runoff and soil loss were measured during three years (total of 116 rainfall-runoff events) at three spatial scales: 1 m(2) and 20 m(2) plots and 2.8 ha watershed. During the first year (2009) the native dry tropical forest/Caatinga vegetation was maintained, whereas on the following years (2010 and 2011) the original vegetation was cleared using slash and burn techniques to grow pasture (Andropogon gayanus Kunt). Annual runoff coefficient is highest at the 20 m(2) plot among the investigated scales. Runoff presented the same trend in all years. Sediment yield was strongly influenced by the land cover. Slash, burn and pasture cultivation strongly impacted sediment yield: the first two events after the land cover change yielded roughly ten times more sediment than similar events in the years with native cover and after grass development. The change was most noticeable at the catchment scale due to erosion along the stream, redefining the drainage network. |
英文关键词 | Hydrological and sedimentological behaviour Soil loss Scale effect |
类型 | Article |
语种 | 英语 |
国家 | Brazil ; Portugal |
收录类别 | SCI-E |
WOS记录号 | WOS:000394168400004 |
WOS关键词 | SHEET EROSION ; INTERRILL EROSION ; SEDIMENT YIELD ; RUNOFF ; MODEL ; RATES ; VARIABILITY ; CATCHMENT ; PATTERNS ; EUROPE |
WOS类目 | Agriculture, Multidisciplinary |
WOS研究方向 | Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/202080 |
作者单位 | 1.IFTM, Fazenda Sobradinho S-N,Caixa Postal 592, BR-38400974 Uberlandia, MG, Brazil; 2.Univ Fed Ceara, Ctr Ciencia Agr, Dept Engn Agr, Fortaleza, Ceara, Brazil; 3.Inst Fed Educ Ciencia & Tecnol Ceara, Maracanau, CE, Brazil; 4.Univ Fernando Pessoa, Oporto, Portugal; 5.Inst Fed Educ Ciencia & Tecnol Ceara, Iguatu, CE, Brazil |
推荐引用方式 GB/T 7714 | Neves dos Santos, Julio Cesar,de Andrade, Eunice Maia,Augusto Medeiros, Pedro Henrique,et al. Land use impact on soil erosion at different scales in the Brazilian semi-arid[J],2017,48(2):251-260. |
APA | Neves dos Santos, Julio Cesar,de Andrade, Eunice Maia,Augusto Medeiros, Pedro Henrique,Simas Guerreiro, Maria Joao,&de Queiroz Palacio, Helba Araujo.(2017).Land use impact on soil erosion at different scales in the Brazilian semi-arid.REVISTA CIENCIA AGRONOMICA,48(2),251-260. |
MLA | Neves dos Santos, Julio Cesar,et al."Land use impact on soil erosion at different scales in the Brazilian semi-arid".REVISTA CIENCIA AGRONOMICA 48.2(2017):251-260. |
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