生命科学研究2025，Vol.29Issue(3)：224-233,10.DOI:10.16605/j.cnki.1007-7847.2024.07.0164
极小种群广西青梅群落林下植物相对叶绿素含量及微生境特征
Relative Chlorophyll Content and Microhabitat Characteristics of Understory Plants in the Community of Vatica guangxiensis,a Species with Extremely Small Populations
摘要
Abstract
Due to narrow distribution ranges and difficulties in population renewal,rare and endangered plants are facing survival and reproduction crisis,and need urgent protection.Investigating understory plants and microhabitats within the plant community is one of the important tasks in the conservation of rare and endangered plants.Vatica guangxiensis is a species with very small populations,and is classified as a na-tional class Ⅰ key protected wild plant.In order to study the relative chlorophyll content and microhabitat characteristics of the understory plants of V.guangxiensis community and evaluate the utilization of light re-source by V.guangxiensis in the community,an investigation was conducted on V.guangxiensis natural con-servation plot in Pingtan Village,Baihe Township,Napo County,and the soil-plant analysis development(SPAD)values of understory plants and microhabitat factors such as temperature and light were measured.The results showed that microhabitat factors were important for the growth and development of V.guangxien-sis.The understory microhabitats of the V.guangxiensis community were complex,with obvious slopes and a high canopy density,and the understory plant compositions and photosynthetic utilization strategies were sig-nificantly different.In addition,compared with other plants in the community,the SPAD value of V.guang-xiensis was at a lower level,indicating its lower photosynthetic level.Measures such as creating light gaps and reasonably clearing redundant plant branches and leaves can be taken to further improve the photosyn-thetic efficiency of V.guangxiensis.关键词
极小种群/广西青梅/林下植物/SPAD值/微生境特征Key words
extremely small population/Vatica guangxiensis/understory plant/soil-plant analysis develop-ment(SPAD)value/microhabitat characteristics分类
农业科技引用本文复制引用
欧阳子龙,徐婷,贾湘璐,高筱钰,黎舒,麦永萍,龚理..极小种群广西青梅群落林下植物相对叶绿素含量及微生境特征[J].生命科学研究,2025,29(3):224-233,10.基金项目
2023年中央财政林业草原生态保护恢复资金"广西青梅迁地保育项目" （）
2024年中央财政林业草原生态保护恢复资金"广西青梅就地保护与繁殖项目" （）
