GLOBAL ECOPOTENTIAL OF DENDROCHRONOLOGYD. Rumyantsev
Drought is a meteorological phenomenon that has influenced the life of human society for ages and still has a great impact on it. This phenomenon can be divided into a group of sub-phenomena, e.g. soil and air droughts, winter droughts, etc.â¦ From a physiological point of view, drought may have different consequences in different periods of a growing season. It seems however difficult to describe quantitative characteristics of a physiologically important drought using any meteorological parameters because within an ecosystem the results of the interaction of ecological factors may change the way plants respond to a certain limited number of values of meteorological parameters. Photosynthesis and transpiration characteristics predetermine that the function modelling annual tree ring variability will always and under any conditions have a variable that will depend on drought. The objective of dendroclimatic studies can be either to separate a drought-associated climatic signal from the tree ring chronology or, on the contrary, to search a chronology with a âclearâ and easily detected drought-associated signal. Having retrospective aspects, Dendroclimatic studies show considerable promise for the evaluation of droughts including those that have an impact on crop yields. Such studies can give further information for crop yield forecasts.