Abstract: Based on 25 years  phenological observation data, the spatiotemporal characteristics of woody plants phenology in Northeast China were analyzed, and the effects of regional climate warming on the plant phenology were explored. In 1980-2005, the initial stage of leaf-developing of the woody plants in Northeast China advanced 0.23 d·a^-1, but that of leaf-yellowing postponed 0.19 d·a^-1. Consequently, the growth season prolonged 0.30 d·a^-1. Spatially, the phenological characteristics of five widespread woody plants (Salix matsudana, Prunus armeniaca, Populus simonii, Ulmus pumila, and Syringa oblata) were significantly different, i.e., with an average increase of 1° of latitude, the initial stage of leaf-developing tended to be postponed 3 d, that of leaf-yellowing advanced 1.35 d, and the growth season tended to be shortened 4.41 d. The initial stage of leaf-developing of these plants was significantly negatively correlated with the air temperature in February, March, and April (P<0.05), and the air temperature in April had the greatest effect, with the initial stage of leaf-developing advanced 2.35 d·℃^-1 on average. On the contrary, the air temperature in February had the least effect, with the average tendency being 1.18 d·℃^-1.

Key words: Marine fishery, Geographic information system, Spatio-temporal dynamic