期刊名称：Studia Universitatis Moldaviae: Stiinte Sociale
印刷版ISSN：1814-3199
电子版ISSN：2345-1017
出版年度：2007
卷号：1
期号：1
页码：61-69
出版社：Moldova State University
摘要：To date an unprecedented, rapid change in environmental conditions is observed, which is likely to override the adaptive potential of plants, especially that of tree species with their long reproductive cycles. These environmental changes mainly originate from anthropogenic activities, which have caused air and soil pollution, acid precipitation, soil degradation, salinity, increasing UV-B radiation, climate change, etc. Some of these stress factors may fluctuate signifi-cantly in intensity and duration on time scales of hours, days, seasons, or years; others may change slowly and gradually affect plant growth conditions
