秦岭田峪河流域兰科植物资源调查及其保护策略

秦岭田峪河流域内有兰科植物17种,分隶于17属,大多数种类可作为观赏植物,部分种类还具有较高的药用价值。兰科植物在该区植被类型中的分布量为落叶阔叶林>针叶林>亚高山灌丛和次生灌丛,并对其分布特点及环境因素的影响关系进行了详细的讨论。该区的兰科植物对环境条件的要求较为严格,而生境条件的退化和无节制的采挖,已造成野生种群的日益减少。建议有关部门加强该区兰科植物的保护性研究,走开发与保护相结合的路子。

Investigation of Orchidaceae plants and protective tactics in Tianyuhe River-Valley in Qinling Mountains

There are 17 species in 17 genera of Orchidaceae plants in Tianyuhe River-Valley in Qinling Mountains.Most of them can be used as ornamental plants and some also have value of medicine production.The distribution amount of Orchidaceae plants in different vegetation types in the area decreases progressively from the deciduous broad-leaved forest,the coniferous forest,the sub-alpine and the regenerative shrub,and its distribution character and influences of environmental factors were discussed in detail.However,their growth need more severe environmental conditions.Orchid species were gradually getting less and less because of environmental problems and the development of wild germplasm resources without control.Thus,the author suggested that the management,development and utilization of these resources be concerned by governments.