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贵州喀斯特区C_4植物物种组成与水分生态型划分
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  • 英文篇名:Species composition and water ecotype division of C_4 plant in Guizhou karst region
  • 作者:刘逸夫 ; 黄宗胜 ; 钱长江 ; 符裕红 ; 喻阳华 ; 严令斌
  • 英文作者:LIU Yifu;HUANG Zongsheng;QIAN Changjiang;FU Yuhong;YU Yanghua;YAN Lingbin;School of Forestry,Guizhou University;School of Architecture and City Plan,Guizhou University;School of Chemistry and Life Science,Guizhou Normal College;School of Karst Science/State Engineering Technology Institute for Karst Decertification Control,Guizhou Normal University;School of Life Sciences,Guizhou University;
  • 关键词:C4植物 ; 资源特征 ; 水分生态型 ; 水分利用效率 ; 贵州喀斯特区
  • 英文关键词:C4 plant;;resource characteristic;;water ecotype;;water use efficiency;;Guizhou karst region
  • 中文刊名:广西植物
  • 英文刊名:Guihaia
  • 机构:贵州大学林学院;贵州大学建筑与城市规划学院;贵州师范学院化学与生命科学学院;贵州师范大学喀斯特研究院/国家喀斯特石漠化防治工程技术研究中心;贵州大学生命科学学院;
  • 出版日期:2018-11-08 17:21
  • 出版单位:广西植物
  • 年:2019
  • 期:08
  • 基金:国家自然科学基金(31560187);; 贵州省应用基础重大项目(黔科合JZ字[2014]200209);; 贵州省社会发展攻关项目(黔科合SY字[2012]3012);; 贵州省农业攻关项目(黔科合NY [2013]3055);; 贵州大学人才引进项目(贵大人基合字[2013]02)~~
  • 语种:中文;
  • 页:100-114
  • 页数:15
  • CN:45-1134/Q
  • ISSN:1000-3142
  • 分类号:Q948
摘要
该研究通过查阅文献、核对贵州大学林学院标本库及现场群落调查与标本采集,并运用碳同位素比值法研究典型C_4植物水分利用特性,探索C_4植物在喀斯特植被恢复中的地位,进而揭示贵州喀斯特地区C_4植物资源的基本特征。结果表明:贵州喀斯特区共有C_4植物141种,隶属于74属15科,分别占全国科属种的62.50%、46.25%、24.48%,以禾本科(Gramineae)和莎草科(Cyperaceae)为主;区内C_4植物种均为一年生或多年生草本,多年生植物种略多于一年生植物种;水分生态型整体偏旱生,旱生和中生植物分别占总数的24.82%和31.21%;喀斯特区C_4植物具有高水分利用效率,但不同水分生态型间差异不显著;贵州喀斯特区C_4植物资源具有资源丰富、利用途径广泛、能长期利用、竞争力强、能大面积分布、偏旱生且水分利用幅度广的基本特征,适合喀斯特区生境,自然状态下多为恢复早期物种,有利于喀斯特区生态恢复。在贵州喀斯特恶劣生态环境下C_4植物有较好的生态适应性,并表现出较高的药用、食用、饲用、景观应用等价值,对其开发利用对贵州经济、社会发展及生态恢复有重要意义。
        The status of C_4 plants in vegetation restoration of the karst region was explored,and the essential characteristics of C_4 plant resources in Guizhou karst region were revealed,by consulting literatures,checking the specimen library of Forestry College of Guizhou University,investigating on-site community and collecting specimens,as well as based on carbon isotope ratio method to study the water utilization characteristics of typical C_4 plants. The results showed that 141 species of C_4 plants belonging to 74 genera and 15 families were found in the Guizhou karst region,which accounted for62.05%,46.25% and 24.48% of the countrywide families,genera and species respectively,and they were composed mainly of Gramineae and Cyperaceae; The species of C_4 plants in the area were either annual plants or perennial plants,and the species number of perennial plant were slightly more than the annual plant; The overall water ecotype was dry,and the siccocolous and the mesad accounted for 84.82% and 31.21% of the total amount; C_4 plants in karst region had high water use efficiency,while there was no significant difference among different water ecotypes; The C_4 plant resources in Guizhou karst region had the essential characteristics of abundant resources,wide application,long-term utilization,strong competitiveness,large-area distribution,drought-producing and wide water use. Karst region provides a suitable habitat for C_4 plants. Under natural conditions,most of them are restoring early species,which is conducive to ecological restoration in karst region. C_4 plants have good ecological adaptability under the harsh ecological environment of Guizhou karst region,and present relatively high value for medicinal,edible,feeding,landscape and other purposes. The exploitation of C_4 plants is of great significance for the ecological restoration in Guizhou and the economic and social development of Guizhou area.
引文
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