Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/esp.1676 |
Erosion and terrace failure due to agricultural land abandonment in a semi-arid environment | |
Lesschen, J. P.; Cammeraat, L. H.; Nieman, T. | |
通讯作者 | Lesschen, J. P. |
来源期刊 | EARTH SURFACE PROCESSES AND LANDFORMS
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ISSN | 0197-9337 |
出版年 | 2008 |
卷号 | 33期号:10页码:1574-1584 |
英文摘要 | Agricultural land abandonment is currently widely spread in Mediterranean countries and a further increase is expected. Previous research has shown that abandoned fields in semi-arid areas are more vulnerable to gully erosion. The absence of ploughing and slow vegetation recovery cause the formation of soil crusts with low infiltration rates, resulting in increased runoff and gully erosion risk. The objective of our study was to assess the extent and causes of erosion and terrace failure on abandoned fields and to discuss options for mitigation. The study was carried out in the Carcavo basin, a semi-arid catchment in southeast Spain. At catchment scale all abandoned fields were surveyed and characteristics of each field were described. Additionally we surveyed abandoned and cultivated terraces and used statistical analyses to determine the factors that induce terrace failure. At field scale we constructed a detailed digital elevation model (DEM) for an abandoned terrace field in order to calculate sediment losses since time of abandonment. The results revealed that more than half the abandoned fields had moderate to severe erosion and the statistical analysis showed that these fields had significantly steeper slopes, were terraced and had cereals as previous land use. Factors that increase the risk of terrace failure were land abandonment, steeper terrace slope, loam texture, valley-bottom position and shrubs on the terrace wall. The reconstructed erosion rate (87 ton ha(-1) year(-1)) confirmed the importance of gully erosion on these abandoned terrace fields. Potential soil and water conservation practices to mitigate soil erosion after abandonment are: (1) maintenance of terrace walls, as a result more water is retained, which increases vegetation cover and consequently decreases erosion. (2) Revegetation with indigenous grass species on spots with concentrated flow, especially near terrace walls. Copyright (C) 2008 John Wiley & Sons, Ltd. |
英文关键词 | land abandonment gully erosion terrace failure revegetation southeast Spain |
类型 | Article |
语种 | 英语 |
国家 | Netherlands |
收录类别 | SCI-E |
WOS记录号 | WOS:000259713800007 |
WOS关键词 | SOUTHEAST SPAIN ; GULLY EROSION ; SOIL-EROSION ; SE SPAIN ; FARMLAND ABANDONMENT ; SPANISH PYRENEES ; MOUNTAIN AREAS ; VEGETATION ; RUNOFF ; IMPACT |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/157017 |
作者单位 | Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, NL-1018 WV Amsterdam, Netherlands |
推荐引用方式 GB/T 7714 | Lesschen, J. P.,Cammeraat, L. H.,Nieman, T.. Erosion and terrace failure due to agricultural land abandonment in a semi-arid environment[J],2008,33(10):1574-1584. |
APA | Lesschen, J. P.,Cammeraat, L. H.,&Nieman, T..(2008).Erosion and terrace failure due to agricultural land abandonment in a semi-arid environment.EARTH SURFACE PROCESSES AND LANDFORMS,33(10),1574-1584. |
MLA | Lesschen, J. P.,et al."Erosion and terrace failure due to agricultural land abandonment in a semi-arid environment".EARTH SURFACE PROCESSES AND LANDFORMS 33.10(2008):1574-1584. |
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