introduction climate change happens due to abnormal changes of climate within the earth’s atmosphere and their consequences. one of the most significant effects of climate change is the irreversible damage to some floral species and forest ecosystems. tree species reflect the impact of climate changes on their ring width. generally, tree rings vary in size each year depending upon the environme...

In this study, an individual tree crown ratio (CR) model was developed with a data set from a total of 3134 Mongolian oak (Quercus mongolica) trees within 112 sample plots allocated in Wangqing Forest Bureau of northeast China. Because of high correlation among the observations taken from the same sampling plots, the random effects at levels of both blocks defined as stands that have different ...

A newly recognized, late-season leaf disease of Quercus macrocarpa (bur oak) has become increasingly severe across Iowa and in neighboring states since the 1990s. Vein necrosis and leaf death may occur over the whole crown or only on the lower branches. Symptoms typically intensify year-to-year in individual trees, and there appears to be substantial variation in susceptibility. Distinctive con...

Volume increment is one of the main concerns in forestry practice. The aim our study was to examine impact factors influencing periodic annual oak. To meet objective, we used measurement data from national forest inventory Poland 2005 2019 for oak-dominated stands. Our 1464 sample plots with dominant oak species (Quercus sessilis Ehrh. ex Schur and Quercus robur L.) measured within Poland. We d...

Oaks (Quercus) are economically important, and their seed (acorns) a valuable food for many animals. Thus, forest managers must consider potential tradeoffs between oak growth acorn production. I used 13 years of dbh 17 trapping data on 195 trees five common eastern species to compare stand-level production closed canopy mature (M) recent shelterwood with reserves regeneration harvests (SW) (BA...

A field-integrated methodology using 3D ultrasonic tomography supported by close range photogrammetry (CRP) has been developed and evaluated as a tool to detect the presence patterns of decay forms in living adult holm oak (Quercus ilex L.) an urban green area city Cagliari, Sardinia, Italy. Close was used compute high resolution model studied tree, texturized with natural colors. Moreover, fol...