DOI: 10.1016/j.envres.2020.109160
论文题名: Validation of RUSLE K factor using aggregate stability in contrasted mediterranean eco-geomorphological landscapes (southern Spain)
作者: Martínez-Murillo J.F. ; Remond R. ; Ruiz-Sinoga J.D.
刊名: Environmental Research
ISSN: 139351
出版年: 2020
卷: 183 语种: 英语
英文关键词: Aggregate stability
; K factor
; Landscape dynamic
; Mediterranean mountains
; Soil erodibility
Scopus关键词: soil organic matter
; aggregate stability
; geomorphology
; land use change
; Mediterranean environment
; model validation
; mountain region
; organic matter
; Revised Universal Soil Loss Equation
; soil degradation
; soil erosion
; vegetation cover
; watershed
; annual plant
; Article
; bulk density
; controlled study
; environmental factor
; forest
; geomorphology
; global change
; grazing
; humidity
; land use
; landscape
; orchard
; permeability
; priority journal
; rangeland
; scrub
; seasonal variation
; semiarid climate
; shrub
; soil aggregation
; soil analysis
; soil degradation
; soil erosion
; Spain
; tillage
; vegetation
; vineyard
; watershed
; Spain
英文摘要: Mediterranean mountains are facing great environmental and socioeconomic challenges in the current framework of Global Change. One of these is soil degradation, which is one of the major threats in those territories. Soil degradation is more dramatic where eco-geomorphology and land uses with less vegetation cover promote soil erosion. Soil erosion is influenced by soil erodibility, which can be assessed by different methodologies, e.g. RUSLE K factor and aggregate stability of soils. This study deals with the validation of RUSLE K factor by means of soil aggregate stability analysed in two-contrasted watersheds from one Mediterranean mountainous region in South of Spain, under sub-humid and semiarid climatic conditions. In both of them, landscape dynamic from 1956 to 2016 was analysed in order to characterize the modifications in land uses. A total of 361-soil samples was also taken covering all land uses for analysing aggregate stability of soils as well as those soil properties needed to calculate the RUSLE K factor. The results indicated that: i) landscape dynamic was influenced by changes in land uses contributing mainly to an increment in vegetation cover in the rainiest watershed; ii) the analysed soil properties showed very few significant differences between watersheds and between land uses, especially regarding organic matter content; and iii) the validation of K Factor using aggregate stability was better in the rainiest watershed and, within this one, in the natural land uses and irrigated cultivations, meaning where the biotic factors were more influential. These results implicated more researches are necessary, principally, focussed on the validation of the RUSLE K parameter using different fractions of aggregates as well as considering other eco-geomorphological parameters. © 2020 Elsevier Inc. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158456
Appears in Collections: 气候变化与战略
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作者单位: Departamento de Geografía, Universidad de Málaga, Campus de Teatinos s/n, Málaga, 29071, Spain; Instituto de Geomorfología y Suelos, Universidad de Málaga, Ampliación Campus de Teatinos, Málaga, 29071, Spain; Departamento de Geografía, Universidad de La Habana, Calle L No. 353 e/ 21 y 23, VedadoLa Habana, Cuba
Recommended Citation:
Martínez-Murillo J.F.,Remond R.,Ruiz-Sinoga J.D.. Validation of RUSLE K factor using aggregate stability in contrasted mediterranean eco-geomorphological landscapes (southern Spain)[J]. Environmental Research,2020-01-01,183