关键词: 景观结构, 景观优势度, 景观破碎度

Abstract: According to the principle of landscape ecology,and with the help of technology of Mapinfor,the patch density,marginal density,landscape dominance index were analyzed. Meanwhile the stand type of forest landscape,origin and distribution were discussed. The results showed that the three indexes (patch density,marginal density,landscape dominance index)in hillside was higher than sand land and Mandian area,but the landscape diversity in hillside was lower than sand land and Mandian area. The forest land had the relative dominance.Deciduous coniferous forest landscapes had the largest area,38306.7hm²,followed by broad-leaved forest and evergreen coniferous forest,16470.5hm²,9455.5hm²,shrub and mixed forests were the smallest ones. The Mandian area,deciduous coniferous forest landscape had the highest advantage,and the better part was pure larch stands. The forest structure was simple. Hillside area,coniferous and broad-leaf deciduous forest landscape dominance index was higher,which is mostly natural secondary broad-leaved forest. The main part was Populus and the rest was birch trees. In sand land,deciduous forest and evergreen coniferous forest coniferous dominance is higher,and most evergreen coniferous forest is artificial pine forest in sand land.

Key words: landscape structure, landscape dominance, landscape fragment