云南野生苏铁分布与濒危原因分析

Reason Analysis and Suggested Strategies of Endangered Situation of Wild Sago Palm of Yunnan Province

云南野生苏铁主要分布在元江中下游河谷、澜沧江下游河谷、南盘江流域、金沙江流域及支流河谷等地区 ,包括南齿苏铁、宽叶苏铁、多歧苏铁、南盘江苏铁、绿春苏铁等种类 ,但数量较少 ,分布区狭窄 ,人为破坏严重 ,加之缺乏更新苗以及生殖力、抗逆性和适应力的衰竭等因素 ,造成云南野生苏铁已处于濒危状态 ,如不采取有效的解危对策 ,势必导致云南野生苏铁走向灭绝。

Wild sago palm endemic to Yunnan was mainly distributed in the valleys of middle_lower reaches of Yuanjiang River, the valleys of lower reaches of Lancangjiang River, the valleys of Nanpanjiang River and Jinshajiang River. The species founded were Cyras pectinata, C balansae warburg, C multipinnata,C guizhouensis,C tanqingensis etc. The limited plant amount, narrow distribution area, human disturbance and damage, short of regeneration seedlings, low propagation capacity, undesirable stress resistance and decline of adaptability, caused the endangered situation of wild sago palm of Yunnan. Effective strategies were urgently needed to release the undesirable situation of wild sago palm of Yunnan.