Fifteen year phenological plant species and meteorological trends in central Italy

摘要: The present study was carried out in a phenological garden central Italy that contains vegetative clones of shrubs and trees common to several international gardens, such as Cornus sanguinea L.; Corylus avellana Ligustrum vulgare Robinia pseudoacacia Salix acutifolia Willd. Sambucus nigra L. Vegetative plant growth monitoring weekly using keys: BBCH07, bud break leaf unfolding; BBCH19, young unfolded leaf; BBCH91, adult leaves; BBCH93, beginning colouring. dates thus obtained provide model the development for these different species relation 15-year period observation (1997-2011). From meteorological point view, temperature precipitation trends were studied, with highest anomalies during recorded first 2 months year (January, February). There relative invariance manifestation open phase contemporary advance leaves phase, particularly from 2006. This accompanied by shortening opening period, which appeared due more rapid spring increases over last few years. tendency BBCH91 showed summer weeks fully green foliage monitored long time. Generally, autumn colouring tended remain constant, exception nigra, which, on other hand, phases be most likely influenced photoperiod.