极小种群濒危植物盐桦迁地保护研究  

Study on ex-situ protection of endangered species of Betula halophila Ching ex P.C.Li

作　　者：黄睿智 李明国[2] 魏景松 谭成权 李俊清[1] Huang Rui-Zhi;Li Ming-Guo;Wei Jin-Song;Tan Cheng-Quan;Li Jun-Qing(Beijing Key Laboratory of Forest Resources Ecosystem Process,Beijing Forestry University, Beijing 100083, China;Survey and Design Institute of State Forestry Administration, Beijing 100714, China;Natural Resources and Planning Bureau of Yantai Development Zone, Yantai, Shandong 264003, China;Yantai Municipal Construction Group Co., Ltd., Yantai, Shandong 265500, China)

机构地区：[1]北京林业大学,森林资源生态系统过程北京市重点实验室,北京100083 [2]国家林业局调查规划设计院,北京100714 [3]烟台开发区自然资源和规划局,山东烟台264003 [4]烟台市政建设集团有限公司,山东烟台265500

出　　处：《植物科学学报》2020年第6期786-794,共9页Plant Science Journal

基　　金：国家重点研发计划项目(2016YFC0503106)。

摘　　要：盐桦(Betula halophila Ching ex P.C.Li)是我国120个极小种群野生植物之一,仅分布于我国新疆阿勒泰地区。为了解其在迁地保护过程中对环境的适应性和沿海强风环境等对幼苗生长的影响,以山东烟台迁地保护基地内两个盐桦居群为材料,对其3年的生长量、果实性状、叶性状以及叶片生态化学计量等进行研究,利用独立样本t检验和贝叶斯方差分析对山东迁地保护两个居群和新疆迁地保护居群进行比较分析。结果显示,经过3年的生长,盐桦在烟台地区适应性良好,能在一个生长周期结出果实,设置风障以后盐桦生长速度显著升高,表明在幼苗敏感期设置风障可以为幼苗越冬提供保障,同时风障营造的相对稳定的环境提高了盐桦对资源环境的利用能力。Betula halophila Ching ex P.C.Li is one of the 120 plant species with extremely small populations(PSESP)in China and is only distributed in the Altay region of Xinjiang.To understand the effects of environmental adaptation and strong coastal winds on seedling growth during ex-situ conservation,we investigated two populations of B.halophila at the ex-situ conservation base in Yantai,Shandong.Plant traits,leaf traits,and leaf biochemical stoichiometry were studied.Independent sample t-test and Bayesian analysis of variance were used to compare and analyze the ex-situ conservation populations in Shandong and Xinjiang.Results showed that after three years of growth,B.halophila exhibited good adaptability in Yantai and bore fruit in one growth cycle.Establishing wind barriers can provide protection for seedlings during winter.At the same time,the relatively stable environment created by wind barriers could enhance the utilization of B.halophila resources and the environment.

关 键 词：极小种群野生植物 迁地保护 盐桦 风障 

分 类 号：Q948.13[生物学—植物学]