The Ornamental And Timber Value Evaluation Of Willow Excellent Clones In Beijing

Willow is an important ornamental and fast-growing timber species, the growth speed, ecological broad adaptability, resistance is strong. Willow resources are rich in china,development and application prospect. At present, both ornamental and fast-growing timber in Beijing region, for the application of salix plants are less. So the appropriate the willow tree species of ornamental and fast-growing timber in Beijing, has great economic and social benefits. This study is on the10annual arbor willow clones in the Beijing area based on the study of the adaptability and application of analytic hierarchy process (ahp) to evaluate the ornamental value of eight clone, evaluate the three clones of material value, to recommend several kinds of ornamental and timber forest tree species in Beijing. The main results were as follows:(1) Through the cutting survival rate of10trees willow clones, phenological period, disease resistance and winter survival rate of the investigation and study found10trees willow clones all are adapt to the climate environment in the area of Beijing.T(2) By using AHP method to establish trees willow clones ornamental value evaluation index system, Into the target layer (T):Suitable willow clones ornamental value evaluation; Guidelines layer (M):Tree (Ml), leaf (M2), chandelier (A3); Factor layer (N):Height (N1), Shuzi (N2), crown (N3), leaf area (N4), leaf shape (N5), whether the Autumn Leaves (N6), twig color (N7), branching angle (N8). Willow clones ornamental value evaluation results show that, Artemisia willow, Artemisia willow, qu6, bamboo willow composite scores were higher than native plants, the willows in the Beijing area is worth promoting.(3) Willow material value evaluation index system by applying the method of MHP, into the target layer (P):suitable willow clones material value evaluation; Rule layer (P):the trunk annual growth (C1), dry (C2), wood properties (C3); Factor layer (D), plant height (D1), base diameter (D2), the crown (D3), number of branches (D4), moisture content (D5), basic density (D6). Willow clones material value evaluation results show that, Bamboo willow, Su Liu799is suitable for application as timber forest tree species in Beijing area.