IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2018  > Vol15 No.3
Assessing conservation practices in Amalacaxco Gorge (Izta-Popo National Park, Central Mexico) using fallout 137Cs and Optically Stimulated Luminescence (OSL)
MUÑOZ-SALINAS E; CASTILLO M
Corresponding AuthorMUÑOZ-SALINAS E
2018-03
Source PublicationJournal of Mountain Science
ISSN1672-6316
EISSN1672-6316
Volume15Issue:3Pages:447-460
Subtype期刊论文
AbstractThis study aims to assess conservation practices in Izta-Popo National Park (Central Mexico) by evaluating the mechanisms of sediment transfer. We applied a methodology based on fallout 137Cs and optically stimulated luminescence (OSL) analysis. This was tested in the upper catchment of Amalacaxco Gorge, selected for being one of the sectors of the park in which man-made actions have been implemented in last decades to favor forest growth in the alpine grassland and to reduce the effect of water runoff. We quantified the 137Cs activity using gamma and beta spectrometry of fine sediment grains extracted from the surface of parcels of 0.4 m2 in areas of natural forest, natural alpine grassland, alpine grassland with conservation practices, ravines and trails. In general, 137Cs values increases as local slope decreases as it was expected. The natural forest is the most stable area in terms of soil erosion and sediment accumulation and, mean 137Cs activity was taken as reference to assess cumulative zones, with higher 137Cs values and erosive, with lower. We found that trails are accumulative surfaces but in other areas, erosion predominates. Man-made ditches, trenches and afforestation in the alpine grassland have higher 137Cs values than the natural grassland, which indicates that conservation practices are limiting the sediment transfer from hillslopes to channels, however, soil retention is less than in the natural grassland. Additionally, we evaluated the luminescence (OSL) values obtained from samples extracted from the sediment transported in ravines that are cutting into different sectors of the study area to assess the grade of resetting of fluvial materials. These luminescence results indicated that the sediment transported in ravines that are cutting into the natural forest and alpine grassland is bleached more efficiently than the sediment transported in the alpine grassland with conservation practices. Results of fallout 137Cs and luminescence strongly suggest that man-made actions in this part of the Izta-Popo National Park are dramatically modifying the natural mechanisms of sediment transfer and favoring soil erosion. We conclude that made ditches, trenches and afforestation are not an effective conservation practice in Amalacaxco Gorge because they are promoting soil erosion instead of reducing it.
KeywordSediment transfer Soil erosion Natural protected areas Alpine grassland Caesium-137 Optically stimulated luminescence
MOST Discipline Catalogue允许多值(多值间使用英文分号分隔)
WOS Headings允许多值(多值间使用英文分号分隔)
DOI10.1007/s11629-017-4635-1
Indexed BySCIE
Language英语
Quartile4区
TOP
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23164
CollectionJournal of Mountain Science _Journal of Mountain Science-2018_Vol15 No.3
Affiliation1 Departamento de Geología Regional, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico; 2 Laboratorio Nacional de Geoquímica y Mineralogía, Ciudad Universitaria, Ciudad de México, Mexico
First Author Affilication1 Departamento de Geología Regional, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico
Corresponding Author Affilication1 Departamento de Geología Regional, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico
Recommended Citation
GB/T 7714
MUÑOZ-SALINAS E,CASTILLO M. Assessing conservation practices in Amalacaxco Gorge (Izta-Popo National Park, Central Mexico) using fallout 137Cs and Optically Stimulated Luminescence (OSL)[J]. Journal of Mountain Science,2018,15(3):447-460.
APA MUÑOZ-SALINAS E,&CASTILLO M.(2018).Assessing conservation practices in Amalacaxco Gorge (Izta-Popo National Park, Central Mexico) using fallout 137Cs and Optically Stimulated Luminescence (OSL).Journal of Mountain Science,15(3),447-460.
MLA MUÑOZ-SALINAS E,et al."Assessing conservation practices in Amalacaxco Gorge (Izta-Popo National Park, Central Mexico) using fallout 137Cs and Optically Stimulated Luminescence (OSL)".Journal of Mountain Science 15.3(2018):447-460.
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