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王爱华,吕雪萍,庞庆玲,顾钰峰,罗丽涛,孙建飞,贺同鑫,蒋日红.广西白桫椤野外资源现状及生境特征[J].广西科学,2025,32(5):997-1005. [点击复制]
- WANG Aihua,Lü Xueping,PANG Qingling,GU Yufeng,LUO Litao,SUN Jianfei,HE Tongxin,JIANG Rihong.Wild Resource Status and Habitat Characteristics of Sphaeropteris guangxiensis Y.F.Gu & Y.H.Yan[J].Guangxi Sciences,2025,32(5):997-1005. [点击复制]
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| 广西白桫椤野外资源现状及生境特征 |
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王爱华1, 吕雪萍1,2, 庞庆玲1, 顾钰峰3, 罗丽涛1,2, 孙建飞1, 贺同鑫1, 蒋日红4
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| (1.南宁师范大学, 北部湾环境演变与资源利用教育部重点实验室, 广西南宁 530001;2.南宁师范大学地理科学与规划学院, 广西南宁 530001;3.深圳市兰科植物保护研究中心, 广东深圳 518114;4.广西壮族自治区林业科学研究院, 广西南宁 530002) |
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| 摘要: |
| 广西白桫椤(Sphaeropteris guangxiensis Y.F.Gu & Y.H.Yan)是国家二级重点保护野生植物，也是广西特有物种。为掌握广西白桫椤野外种质资源现状，本研究对广西防城港市防城区那良镇、峒中镇、峒棉镇的潜在分布区进行系统的野外调查。结果表明：(1)广西白桫椤集中分布于防城区十万大山山脉西南部支脉峒中镇和那良镇之间的山区。(2)共调查到142株个体植株，其中约120株为首次发现和报道，包含2个自然生长植株的种群、1个人工移栽种群、1个人工移栽与自然生长植株的混合种群。天然植株个体数量较少，以村民引种移栽居多，自然种群生长状况良好，成年植株能够正常繁殖，幼株数量相对较多，表明群落具有稳定的更新能力；人工及混合种群幼株数量极少且自我更新能力差。(3)生境土壤类型为黑沙土、黄红沙土和红沙土，自然种群的土壤类型为黑沙土。(4)依据世界自然保护联盟(IUCN)濒危物种红色名录中濒危等级评估标准，广西白桫椤应当被划分为极危[CR，A4bc，B2ab(i)(ii)(iii)(iv)(v)]种。本研究提出的针对性保护建议，可为该物种的种群保护与可持续利用提供科学依据和理论支撑。 |
| 关键词: 广西白桫椤 种质资源 生境 野外调查 保护 |
| DOI：10.13656/j.cnki.gxkx.20251128.001 |
| 投稿时间：2025-06-28修订日期：2025-08-21 |
| 基金项目:国家自然科学基金项目(32460056)，南宁师范大学科研启动项目(GTEU20170601)，2024年中央财政林业草原生态保护恢复资金重点野生动植物保护项目“广西白桫椤资源调查和人工繁育”(ZX31242511)，广西林草种质资源普查与收集(桂林科字〔2021〕第34号)资助。 |
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| Wild Resource Status and Habitat Characteristics of Sphaeropteris guangxiensis Y.F.Gu & Y.H.Yan |
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WANG Aihua1, Lü Xueping1,2, PANG Qingling1, GU Yufeng3, LUO Litao1,2, SUN Jianfei1, HE Tongxin1, JIANG Rihong4
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| (1.Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Nanning Normal University, Nanning, Guangxi, 530001, China;2.School of Geography and Planning, Nanning Normal University, Nanning, Guangxi, 530001, China;3.The Orchid Conservation and Research Center of Shenzhen, Shenzhen, Guangdong, 518114, China;4.Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning, Guangxi, 530002, China) |
| Abstract: |
| Sphaeropteris guangxiensis Y.F.Gu & Y.H.Yan is a wild plant species under Class Ⅱ National Protection in China and an endemic species to Guangxi.To assess the current status of its wild germplasm resources,this study conducted systematic field investigations for the potential habitats in the mountainous areas at the junction of-Naliang Town,Dongzhong Town,and Dongmian Town of Fangcheng District,Fangchenggang City,Guangxi.The results are summarized as follows:(1) S.guangxiensis Y.F.Gu & Y.H.Yan was mainly distributed in the mountainous area between Dongzhong Town and Naliang Town,within the southwestern branch of the Shiwandashan Mountains,Fangcheng District.(2)A total of 142 individuals were recorded,of which about 120 were newly discovered and reported.These individuals comprised two natural populations,one artificially transplanted population,and one mixed (natural+artificial) population.Natural wild individuals were scarce,and most individuals were transplanted by villagers.The natural populations exhibited healthy growth,with normal reproduction of adult plants,abundant juvenile plants,and stable regenerative capacity.In contrast,the artificially transplanted population and mixed population showed few juvenile plants and poor self-regenerative capability.(3)Habitat soil types included black sandy soil,yellow-red sandy soil,and red sandy soil.The natural population grew in black sandy soil.(4)According to the assessment criteria of endangered level in the International Union for Conservation of Nature (IUCN) Red List of Threatened Species,S.guangxiensis Y.F.Gu & Y.H.Yan was rated as a Critically Endangered [CR,A4bc,B2ab(i)(ii)(iii)(iv)(v)]species.Targeted conservation recommendations are proposed to provide scientific reference and theoretical foundations for the protection and sustainable utilization of this plant. |
| Key words: Sphaeropteris guangxiensis Y.F.Gu & Y.H.Yan germplasm resources habitat field investigation protection |
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