三峡库区陆生植物迁地保存初报

PRELIMINARY STUDY ON THE EX-SITU CONSERVATION OF LAND PLANTS IN THE THREE GORGES RESERVOIR AREA

三峡植物物种多样性保护,重点在珍稀濒危植物,但对建群种和有实用价值的种也进行收集保存。7年来试验站保存三峡库区植物200余种,迁移成活率93%,有8种未成功。(1)到2002年已有30余种植物正常开花结实(其中木本植物24种),可以选择繁殖试验,以达到保存的目的;(2)选择了8种植物,进行生长观测,在人为控制下,生长速度满意;(3)进行了部份种类的扦插繁殖和孢子繁殖,获得了相关结果;(4)少数种类收集遇到极大困难,需要继续努力。三峡库区生物多样性研究与保护,存在一些问题与困难,如漏项问题、库区物种问题、外来种问题、隔离对生物多样性的影响问题、生物多样性的功能问题等需要进一步研讨,从而使库区物种得以保存,环境得以优化,生物资源得到持续利用。

The conservation of plant species diversities in the Three Gorges reservoir area was carried out by collection and conservation of dominant species of communities and species of practical value, with emphasis on rare and threatened plants. More than 200 species in the Three Gorges reservoir area have been planted in experiment stations since 1996, the survival percentage was 93%, while 8 species failed to success. By 2002, more than 30 species (including 24 wood plants) developed flowers and set fruits normally; 8 species were selected to record their growth process; Several species were cuttage reproduced and spore propagated; Collection of some species faced great difficulty. There are some problems and difficulties in the study and conservation of biodiversity in the Three Gorges reservoir area, for example, the missing items, the species list of Three Gorge district, the invasive species, effect of isolation on biodiversity, and function of biodiversity, etc., which need further concern and studies.