Functional traits of twelve species of marsh plants in Siming Mountain, Zhejiang Province

PDF HTML阅读 XML下载 导出引用 引用提醒 浙江四明山沼泽湿地植物功能性状研究 DOI: 10.5846/stxb202203300788 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 浙江省省属科研院所扶持专项（2021F1065-4，2020F1065-6）；浙江省公益技术应用研究项目（LGF22C030001） Functional traits of twelve species marsh plants in Siming Mountain, Zhejiang Province Author: Affiliation: Fund Project: 摘要 | 图/表 访问统计 参考文献 相似文献 引证文献 资源附件 文章评论 摘要:为理解浙东亚高山沼泽湿地不同植物的生态策略，收集了浙江四明山12种典型沼泽湿地植物，对其主要功能性状进行了统计比较。结果表明：（1）不同沼泽湿地植物功能性状变异程度不同，变异系数（CV）最大为叶片密度（216.16%），最小为相对叶绿素含量（22.84%），平均变异为112.86%。（2）叶周长分别和叶面积、叶干重、叶长和叶长宽比呈显著正相关（P<0.05）；叶形指数与叶面积、叶长、叶长宽比和叶片密度呈显著负相关（P<0.05）；棘刺与比叶面积呈显著正相关（P<0.05）；生活史与相对叶绿素含量呈显著正相关（P<0.05）；根状茎或匍匐茎与叶形指数呈显著负相关（P<0.05）；生活型与异形叶性呈显著负相关（P<0.05）。（3）17项功能性状主成分分析（PCA）的前3大主成分累计贡献率达到71.47%，可综合表征和概述为：植物叶片的质量和大小（35.72%）、对水分和氮素的吸收（18.74%）、植物抵御草食动物的能力和强光下的自我保护能力（17.01%）。（4）物种-功能性状排序图结合UPGMA聚类分析均支持将12种植物划分为2个功能组，第1功能组包含野慈姑（Sagittaria trifolia）和萱草（Hemerocallis fulva），采取"高投入-缓慢回报"策略，而第2功能组包含其余10种植物，采取"低投入-快速回报"策略。总之，四明山沼泽湿地植物功能性状变异丰富，物种通过功能性状间的组合和权衡，形成了不同的植物功能组，从而提高了山区沼泽湿地异质生境的适应性。 Abstract:To understand the ecological strategies different subalpine forests eastern Zhejiang, typical Province, were collected, and their main functional statistically compared. Results showed that:(1) plant exhibited some degrees variation. The maximum coefficient variation (CV) was leaf density (216.16%), while minimum relative chlorophyll content (22.84%), with average reached to 112.86%. (2) Leaf perimeter significantly positively correlated area, dry weight, length width ratio (P<0.05). shape index negatively length, Thorn specific area (P<0.05), life history Rhizome or stolon There a significant negative correlation between growth type heterophylly (3) cumulative contribution rate first three principal components 17 component analysis (PCA) 71.47%, which can be comprehensively characterized summarized as follows:the quality size leaves (35.72%), effect on water nitrogen absorption (18.74%), ability resist herbivores self-protection under strong light (17.01%). (4) species-functional trait ranking diagram combined UPGMA cluster supports division 12 into two groups. group includes Sagittaria trifolia Hemerocallis fulva, adopting "high investment-slow returns" strategy, second contains remaining 10 plants, "low investment-quick strategy. In conclusion, abundant Simingshan marsh, have formed groups through combination trade-off traits, hence improving adaptability heterogeneous habitat mountainous marsh.