【作者】 苏维词；

【Author】 SU Weici (Geography Department of Chongqing Normal University,Chongqing 400047; Institute of Mountain Resources,Guizhou Academy of Sciences,Guiyang 550001)

【机构】 贵州科学院山地资源研究所； 重庆师范大学地理系；

【摘要】 贵州山区是我国一个植物多样性较丰富的地区,仅野生观赏植物(含园林及行道绿化、美化树种)就有三百多种,其中有一百二十多种属珍稀受危观赏物种。本文着重对36种主要珍稀濒危观赏植物的分布、生境、濒危类型、程度等进行了分析,并从观赏植物本身的生理生态习性、贵州山区生境本底的严酷性(如土壤瘠薄、可有效利用的地表水匮乏等)、人类不合理干扰活动(如过度采收、盗伐、毁林垦荒、森林破坏和片段化、水土流失及石漠化、酸雨危害等)等方面探讨了该地区观赏植物多样性的受危原因。在此基础上,结合目前西部大开发中生态建设的要求,提出了该地区受危观赏植物的保护对策。更多还原

【Abstract】 Guizhou is located in Southwest China where the diversity of plants is considerably rich.Field survey and previous studies have indicated that there are about 300 species(containing varieties) belonging to rare ornamental plants,among which more than 120 species belong to rare and endangered plants.In this paper,we took 36 kinds of rare and endangered ornamental plants in the Guizhou as examples,analyzed their original ecological conditions and current regional distributions,ornamental value and endangered degrees (types),and explored the endangered causes of these plants due to adverse mountain habitats(such as lean soil and shortage of surface water) and irrational human activities such as over-gathering,denudation,forest destruction and fragmentation,serious soil and water erosion and acid rain,besides organisms’ habits and characteristics of rare and endangering ornamental plants.Based on these analyses and requirements of eco-environmental construction during the"West Development of China",the corresponding protective countermeasures for the rare and endangered ornamental plants in the Guizhou mountain areas were suggested.更多还原