植物生态学报 ›› 2024, Vol. 48 ›› Issue (10): 1336-1350.DOI: 10.17521/cjpe.2024.0012  cstr: 32100.14.cjpe.2024.0012

所属专题: 植物功能性状

• 研究论文 • 上一篇    下一篇

浙江金华典型人工植被的植物功能性状

胡楚婷1, 杨柳依依1, 石绍林1, 周琰1, 陈婷婷1, 郑博瀚1, 杨暘1, 卢小玲1, 王陈玲1, 倪健1,2,*()()   

  1. 1浙江师范大学生命科学学院, 浙江金华 321004
    2浙江金华山亚热带森林生态系统野外科学观测研究站, 浙江金华 321004
  • 收稿日期:2024-01-17 接受日期:2024-06-14 出版日期:2024-10-20 发布日期:2024-06-17
  • 通讯作者: 倪健
  • 基金资助:
    国家自然科学基金(31870462)

Plant functional traits of typical artificial vegetation in Jinhua, Zhejiang, China

HU Chu-Ting1, YANG Liu-Yi-Yi1, SHI Shao-Lin1, ZHOU Yan1, CHEN Ting-Ting1, ZHENG Bo-Han1, YANG Yang1, LU Xiao-Ling1, WANG Chen-Ling1, Ni Jian1,2,*()()   

  1. 1College of Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
    2Jinhua Mountain Observation and Research Station for Subtropical Forest Ecosystems, Jinhua, Zhejiang 321004, China
  • Received:2024-01-17 Accepted:2024-06-14 Online:2024-10-20 Published:2024-06-17
  • Contact: Ni Jian
  • Supported by:
    National Natural Science Foundation of China(31870462)

摘要: 人类活动影响和管理之下的人工植被广泛分布于全球各地, 其结构与过程、格局与功能等是现代生态学不可忽视的主题, 但对其植物功能性状的研究仍较少, 限制了对人工植被, 尤其是农业植被的理解。该研究以金华地区常见的7种人工植被的优势种为研究对象, 分析其叶、茎、细根功能性状的变异性、相关性及权衡差异。结果表明: 1)不同人工植被的性状及其变异程度有一定差异。木本植物各器官的干物质含量、组织密度等较大, 体现较强的物质储存能力; 草本植物的比叶面积、比根长、比根表面积较大, 可快速获取资源。木本和草本植物的性状总变异系数分别为8.80%-40.94%和37.05%-61.60%。木本植物的性状变异小于草本植物, 表明后者对生境变化更为敏感。性状变异主要受物种、生境与管理方式交互作用的影响。2)不同器官性状间多呈显著正相关关系, 体现人工植被性状间普遍的协同性。3)人工植被不同物种的不同性状组合体现适应策略的差异。桃(Amygdalus persica)较大比叶面积和小枝树皮厚度及较小细根直径体现快速获取资源的能力, 山茶(Camellia japonica)较大叶厚度、比叶干质量和较大细根直径体现较强的物质积累和防御能力, 柑橘(Citrus reticulata)则介于以上两者之间, 茶(Camellia sinensis)浅根发达, 利于养分吸收; 水稻(Oryza sativa)和欧洲油菜(Brassica napus)的叶厚度和比叶干质量较大而茎、根系组织密度较小, 叶片物质积累和根系养分吸收能力较强, 人工草地的狗牙根(Cynodon dactylon)和早熟禾(Poa annua)则与之相反。从生态学角度研究人工植被的功能性状及其权衡和组合特征, 可为人为干扰生态系统的管理提供科学依据和新思路。

关键词: 人工植被, 植物功能性状, 植物驯化, 性状变异, 生态策略

Abstract:

Aims Artificial vegetation, human planted and being that managed and influenced by human activities, is widely distributed all over the world, and its structure, process, pattern, and function are important topics in modern ecology. However, there are few studies on plant functional traits of artificial vegetation, which limit the understanding of artificial vegetation, especially agricultural vegetation. The aims of this study are to investigate key features of plant functional traits in main artificial vegetation types of Jinhua, Zhejiang, and to explore potential ways they have adapted to human disturbance.

Methods Above- and below-ground plant functional traits (leaf, twig or stem, and fine root) of eight dominant species in seven common artificial vegetation types in Jinhua, Zhejiang, were measured. Key characteristics of plant traits such as mean value, variability, correlation, and plant growth trade-offs were statistically analyzed. Combinations of above- and below-ground traits of different planted species were further analyzed by the principal component analysis to identify ecological strategies of these common planted species.

Important findings (1) Plant functional traits, and variation in artificial vegetation, exhibited different features. Woody plants had higher dry material content and tissue density in leaf, twig and fine root tissues, indicating stronger material storage capacity, whereas herbaceous plants had higher specific leaf area, specific root length and specific root area, facilitating quick access to resources. The ranges in the coefficient of variation (CV) of functional traits in woody, and then herbaceous plants were 8.80%-40.94% and 37.05%-61.60%, respectively. Furthermore, the CV for woody plants was generally smaller than that of herbaceous plants, indicating the latter were more sensitive to habitat changes. Species composition and the interaction between habitat and management, were the major factors affecting artificial vegetation traits. (2) Plant functional traits of different organs showed mostly positive and significant correlations, reflecting the synergy of artificial vegetation plant traits. (3) Different combinations of functional traits of species in different artificial vegetation types reflected various adaptation strategies. The leaf and fine root traits of peach (Amygdalus persica), with a larger specific leaf area, larger twig bark thickness, and smaller fine root diameter, showed the ability of quickly acquire resources, while camellia (Camellia japonica) tended to have greater leaf thickness, increased leaf mass per area and a coarser fine root component. This reflects a stronger substance accumulation and defense capacity. The orange (Citrus reticulata) however had intermediate trait values. The tea plant (Camellia sinensis) had flourishing fine roots to acquire more nutrients. Rice (Oryza sativa) and rape (Brassica napus) had stronger abilities to accumulate substance and to absorb nutrients because of their larger leaf thickness, greater specific leaf mass per area, and lower stem and fine root tissue densities. However the trait combinations of two artificial grassland species, Bermuda grass (Cynodon dactylon) and bluegrass (Poa annua) were in contrast with the above two crops. The study of plant functional traits, their trade-offs, and the various combinations of artificial vegetation from an ecological perspective, provide a scientific basis and new ideas for the management of anthropogenic ecosystems.

Key words: artificial vegetation, plant functional traits, plant domestication, variation of functional traits, ecological strategy