湖南针叶林的区系特征及地理分布

对湖南针叶林的区系特征及地理分布进行分析研究,结果表明,湖南针叶树种资源丰富,其区系计有6科19属37个种和变种。其中构成现代森林的属种有松科的松属(4种)、铁杉属(2种),冷杉属(2种),以及银杉和黄杉;杉科的杉木和柳杉;柏科的柏木和福建柏;罗汉松科的竹柏和红豆杉科的穗花杉等。表明湖南是我国针叶树特有属、单型属、少型属和残遗森林群落的重要保存中心。起源亦很古老。必须采取措施加以保护。

FLORISTIC CHARACTERISTICS AND GEOGRAPHIC DISTRIBUTION OF CONIFEROUS FORESTS IN HUNAN PROVINCE

The floristic characteristics and geographic distribution of the edifi cators of coniferous forests in Hunan have been studied. The results indicate that the province is rich in conifer resources with 37 species and varieties belonging to 6 families and 19 genera, among which are Pinus(4), Tsuga (2), Abies(2), Cathaya and Pseudotsuga of pinaceae, Cunninghamia and Cryptomeria of Taxodiaceae, Cupressus and Fokienia of Cupressaceae, Podocarpus of podocarpaceae, and Amentotaxus of Taxaceae, and that Hunan conifers are one of the chief survival centers of chinese endemic genera, monotypic genera, oligotypic genera and relict phytocommunities. The flora is also of very ancient origin. Effective measures must be taken to conserve it.