dsi – -Translation – Keybot Dictionary

Spacer TTN Translation Network TTN TTN Login Deutsch Français Spacer Help
Source Languages Target Languages
Keybot      2'450 Results   314 Domains   Page 9
  4 Hits cfs.nrcan.gc.ca  
Show textShow cached sourceOpen source URL
Le rapport entre la défoliation et les survie-temps a été capturé dans un modèle proportionnel de risque de Cox avec un index d'effort de défoliation (DSI), le diamètre (DBH), la classe de couronne (CCL), un effet de stand, un Bt-traitement, et un nombre aléatoires d'années d'exposition aux défoliations de tenir-niveau (DYEAR) comme prédiseurs.
Compare text pagesCompare HTM pagesOpen source URLOpen target URLDefine scf.rncan.gc.ca as primary domain
Mortality and defoliation (DF%) in 987 white spruce (Picea glauca (Moench) Voss) trees were followed from 1992 to 2003 during an outbreak of the spruce budworm Choristoneura fumiferana (Clem.) in 15 white-spruce-dominated uneven-aged stands in the Fort Nelson Forest District near Prince George, British Columbia. Four stands were aerially sprayed with Bacillus thuringiensis (Bt). Defoliation and mortality levels were elevated in non-sprayed stands. The relationship between defoliation and survival-times was captured in a Cox proportional hazard model with a defoliation stress index (DSI), diameter (DBH), crown class (CCL), a random stand effect, Bt-treatment, and number of years of exposure to stand-level defoliations (DYEAR) as predictors. The DSI, optimized for discrimination between surviviors and non-survivors, is the discounted sum of five lagged DF% values. Survival probabilities were predicted with a maximum error of 0.02. Hazard rates increased by 0.06 for every one point increase in DSI, CCL and random stand effects were highly significant. Bt-treatment effects were fully captured by DSI, CCL, and DYEAR.
1 2 3 4 5 6 7 8 9 10 Arrow