The Forest Tree Germplasm Resources’s Survey And Current Situation Analysis Of Yashan

Tree germplasm resources as the carrier of genetic diversity is Important basis for biodiversity and ecosystem diversity,and It is also an important basis for the current and future breeding of new varieties, the development of new tree species and the solution of forest trees. Yashan is located in Qixia, located in the central part of Yanta, Shandong province. It belongs to the Department of Laoshan mountains part of Changbai Mountain. Zonal vegetation is a warm temperate deciduous broad-leaved forest. It has mixed forest natural growth. It also has a domestic most representative of natural Pinus densiflora forest, coniferous and broad-leaved mixed forest and large area of Robinia pseudoacacia, walnut forest, fir forest plantation. Its germplasm resources are very rich. We through to five villages in two towns and Yashan forest belongs within the scope of the teeth mountains of wild forest resources, planting trees, ancient and famous trees and rare and endangered species to carry out the forest germplasm resources investigation, and the results show that:(1) Yashan has 158 species of woody plants belonging to 48 families and 94 genera. They are gymnosperm belong to 4 families, 8 genera and 13 species(including 1 cultivar) angiosperms belonging to 44 families, belonging to 86 genera, 145 species(including nine variants, a variant, the four cultivated varieties and 2 Variation). There are 12 species of evergreen woody plants, 146 species of deciduous woody plants. There are 1 species are new records in Shandong Province, 8 species are new record species in the range yashan.(2) Yashan has a total of wild woody plants 102 species(including 6 varieties and two variants), they belong to 34 families and 65 genera, including 43 species of arbor, 45 species of shrubs, lianas 14. There are 56 species(including 3 varieties, 1 varieties, 4 cultivated variation) in the cultivation of woody plants of Yashan. They belong to 27 genera and 43 families(Table 5). Yashan has a rare and endangered plant species, which included in the national protection of 4 species, included in Shandong Province, the survey of rare and endangered species of 13 species. It has trees less species, a total of 11 strains, including 1 strains of pine trees, there are 10 strains of traditional chestnut.(3) According to Mr. Wu Zhengyi partition of Chinese seed plants flora in the areal types, wild woody plants with Yashan 66 genera can be divided into 12 kinds of geographical distribution types, and dominated by temperate and temperate distribution types of most pan tropical elements of 10 genera, in a variety of points distributed area types after North Temperate distribution, and East Asia North America disjunct distribution were in second place. These results indicate that the plant flora of Yashan has the characteristics of typical temperate flora, and has some tropical affinities.