Abiotic factors related to the incidence of the Austrocedrus chilensis disease syndrome at a landscape scale

FOREST ECOLOGY AND MANAGEMENT

卷:256

Article

La Manna, L.^1,2,3  Matteucci, S. D.^3,4  Kitzberger, T.^3,5 

[1] CIEFAP, Lab Suelos, RA-9200 Esquel, Chubut, Argentina

[2] Univ Nacl Patagonia San Juan Bosco, RA-9200 Esquel, Chubut, Argentina

[3] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

[4] Univ Buenos Aires, Grp Ecol Paisaje & Medio Ambiente, RA-1428 Buenos Aires, DF, Argentina

[5] Univ Nacl Comahue, CRUB, Lab Ecotono, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

关键词: spatial distribution;    soil;    site;    habitat model;    Mal del cipres;    Phytophthora austrocedrae;    patagonia;   

DOI  :  10.1016/j.foreco.2008.06.023

来源: Elsevier

【 摘 要 】

In this paper, the incidence of the A. chilensis disease syndrome in the 16 de Octubre Valley (Chubut, Argentinean Patagonia) was related to landscape climatic, topographic and eclaphic attributes, using remote sensing, geographic information systems and statistical methods. A strong relationship between the occurrence and incidence of the A. chilensis disease syndrome and site variables related to poor soil drainage was found. Non-allophanized soils with fine textures on flat and wavy soil phases, geomorphologies associated to alluvial processes, and low elevations and gentle slopes were positively related to the incidence of the disease. These relationships at a landscape scale agree with previous studies carried out at the stand level. A logistic predictive model of diseased occurrence was developed for the study area considering aspect, elevation, slope, mean annual precipitation and soil phase (classified according to predominant slopes). (C) 2008 Elsevier B.V. All rights reserved.

【 授权许可】

Free