三峡库区再度发现荷叶铁线蕨野生种群|成人A片产无码免费视频奶头软件
中新网宜昌11月20日电 (秦明硕)据三峡集团长江经济带生态环境国家工程研究中心20日消息，该中心科研团队在重庆万州、石柱等地野外调查时，再次发现极危植物——荷叶铁线蕨。这是继2023年4月后第二次在野外发现荷叶铁线蕨种群，也是该团队目前发现的面积最大的荷叶铁线蕨野生种群。
荷叶铁线蕨是三峡库区特有植物，多生长于库区沿岸砂页岩或石灰岩崖壁薄土层中，对生境湿度、通风性及光照条件要求严格。其分布范围狭窄、个体数量稀少，且受人类活动影响大，已被列入国家Ⅰ级重点保护野生植物名录，被国际自然保护联盟(IUCN)评估为“极危”(CR)等级。2023年4月，科研人员在重庆市万州区首次发现零星分布的荷叶铁线蕨野生种群。
此次调查，科研人员历时多日对三峡库区典型区域进行系统踏查，最终在重庆万州区新乡镇、武陵镇、燕山乡等地发现3个荷叶铁线蕨野生种群，共计100余株，均分布于人迹罕至的崖壁与峡谷阴湿处。调查人员在多个分布点均发现幼嫩且独立生长的个体，初步判定为孢子自然繁殖而成。
科研团队负责人表示，此次发现为荷叶铁线蕨野生种群分布提供了最新数据，后续将结合调查数据，深入研究荷叶铁线蕨的种群结构特征和生境适应机制，制定就地保护与迁地保护并举的保护策略，为该物种的长期保护与恢复提供科学支撑。(完)
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