Response of Pinus sylvestris roots to sheet-erosion exposure: an anatomical approach
| Autor: | Juan M Rubiales, Bodoque, Jm, Ballesteros, Ja |
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| Přispěvatelé: | Departamento de Silvopascicultura, Escuela Técnica Superior de Ingenieros de Montes, Departamento de Ingeniería Geológica y Minera, Facultad de Ciencias del Medio Ambiente, Departamento de Investigación y Prospectiva Geocientífica, EGU, Publication |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere lcsh:GE1-350 [SDU.OCEAN] Sciences of the Universe [physics]/Ocean Atmosphere Biología lcsh:QE1-996.5 lcsh:Geography. Anthropology. Recreation [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces environment lcsh:TD1-1066 lcsh:Geology lcsh:G [SDU.STU] Sciences of the Universe [physics]/Earth Sciences lcsh:Environmental technology. Sanitary engineering [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment lcsh:Environmental sciences |
| Zdroj: | ResearcherID Natural Hazards and Earth System Sciences, ISSN 1561-8633, 2008-03, Vol. 8, No. 2 Andrés Díez-Herrero Natural Hazards and Earth System Sciences, Vol 8, Iss 2, Pp 223-231 (2008) Scopus-Elsevier Natural Hazards and Earth System Sciences Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2008, 8 (2), pp.223-231 Archivo Digital UPM instname |
| ISSN: | 1684-9981 1561-8633 |
| Popis: | International audience; Anatomical changes of exposed tree roots are valuable tools to date erosion events, but the responses of diverse species under different types of erosion need still to be studied in detail. In this paper we analyze the histological changes that occur in roots of Scots pine (Pinus sylvestris L.) subjected to continuous denudation. A descriptive and quantitative study was conducted in the Senda Schmidt, a popular trail located on the northern slope of the Sierra de Guadarrama (Central Iberian System, Spain). Measurement of significant parameters allowed the moment of exposure of the roots to be identified. These parameters were: a) width of the growth ring; b) number of cells per ring; c) percentage of latewood and d) diameter of cellular light in earlywood. A one-way analysis ANOVA was also carried out in order to establish statistically significant differences between homogeneous groups of measurements in pre-exposed and exposed roots. Based on these analyses, Scots pine roots show a remarkable anatomical response to sheet-erosion exposure. Increased growth in the ring is accompanied by a slight reduction of the cell lumina of the earlywood tracheids. At the end of the ring, several rows of thick-walled tracheids define latewood tissue and visible annual borders very clearly. Furthermore, resin ducts often appear in tangential rows, increasing resin density in the tissue. All of these indicators made it possible to determine with precision the first year of exposure and to estimate precisely sheet erosion rates. |
| Databáze: | OpenAIRE |
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