|本期目录/Table of Contents|

[1]左有璐,王振孟,习新强 向 双** 孙书存.川西北高寒草甸优势植物生物量分配对策*[J].应用与环境生物学报,2018,24(06):1-12.[doi:10.19675/j.cnki.1006-687x.2018.03030]
 ZUO Youlu,WANG Zhenmeng,et al.Strategies on plant biomass allocation of the dominant species in an alpine meadow of Northwestern Sichuan, China *[J].Chinese Journal of Applied & Environmental Biology,2018,24(06):1-12.[doi:10.19675/j.cnki.1006-687x.2018.03030]
点击复制

川西北高寒草甸优势植物生物量分配对策*()
分享到:

《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年06期
页码:
1-12
栏目:
研究论文
出版日期:
2018-12-25

文章信息/Info

Title:
Strategies on plant biomass allocation of the dominant species in an alpine meadow of Northwestern Sichuan, China *
文章编号:
201803030
作者:
左有璐1 2 王振孟1 2 习新强1 向 双1** 孙书存1
1中国科学院山地生态恢复与生物资源利用重点实验室, 生态恢复与生物多样性保育四川省重点实验室, 中国科学院成都生物研究所 成都 610041
2中国科学院大学 北京 100049
Author(s):
ZUO Youlu1 2 WANG Zhenmeng1 2 XI Xinqiang1 XIANG Shuang1** & SUN Shucun 1
1CAS Key Laboratory ofMountain Ecological Restoration and Bioresource Utilization & Ecological Restoration andBiodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China?
?2University of Chinese Academy of Sciences, Beijing 100049, China
关键词:
异速生长生活史对策功能型生活型干扰草地返青植物人为干扰
Keywords:
allometry life-history strategy functional type lifeform alpine meadow wintergreen plants anthropogenic disturbance
DOI:
10.19675/j.cnki.1006-687x.2018.03030
摘要:
生物量分配是整个植株净碳获取的重要驱动因子,对植物未来的生长与繁殖具有直接的影响,川西北高寒草甸植物群落结构丰富、物种多样性高,研究高寒草甸不同类型植物的生物量分配格局对理解植物生活史对策有重要意义。本研究调查了川西北高寒草甸中天然草地、干扰草地和冬季返青草地等三类样地中不同功能型和生活型的植物共72个物种,采用标准化主轴估计(SMA)和异速生长分析(Allometric scaling analysis )的方法,比较研究不同植物类群的生物量分配对策。结果显示:(1)不同功能型植物各构件生物量百分比差异显著,禾草的茎生物量百分比最高(60.60% ± 3.07%),莎草的根生物量百分比较高(37.49% ± 11.86%),杂草类植物(Forb)的叶生物量百分比更高(26.37% ± 1.64%),各构件生物量之间的异速生长斜率在各功能型间无显著差异且均呈显著的同速生长关系;(2)生活型影响植物各构件生物量百分比大小,一年生植物对茎和繁殖构件投入的生物量比例相对更高,多年生植物则将更多生物量投资到根部;(3)样地类型对杂草类植物各构件的生物量具有显著影响,天然草地植物和返青植物的叶片与繁殖分配比更高,而干扰草地植物的茎生物量分配比更高。研究表明:植物功能型和生活型决定植物各构件生物量分配固有的异速生长关系,而人为干扰则显著影响植物的生物量大小,这对加强草地应对人类干扰和气候变化的响应研究以及高寒草甸生态系统的科学管理都有重要的理论与实践意义。图4表2参39
Abstract:
Objectives: Plant biomass partitioning is an important driver of whole-plant net carbon gain, as biomass allocation could direct ly affect on plant’s future growth and reproduction. Alpine meadow in the northwestern Sichuan was impressed by the abundant community structure and species diversity. This study on biomass allocation pattern of different functional types and lifeforms will help understand p lant life-history strategy of alpine meadow plants. Methods: We investigated 72 dominant herbaceous species for their compartments biomass and morphological traits in 2012-2014, these plants were sampled from natural grassland, disturbed grassland and wintergreen grassland, they belonged to three functional types (grass, sedge and forb) and two lifeforms (annual and perennial). The scaling relationships between functional traits of these plants were analy zed using Model type II regression method to estimate the parameters of the allometric equations. Results: (1) Biomass allocation proportion of components significantly differe d among grasses, sedges and forb s due to phylogeny: grasses had highest stem biomass percentage, sedges was higher in that of root, forbs was higher in portion to leaf biomass , but the scaling relationships had no significant difference and isometriclly scaled between biomass components for the three functional types respectively. (2) Moreover, plant lifeforms affected the biomass allocation proportion of components, due to the shorter or longer turnover rate and investment strategy between annual and perennial species. Annuals allocated more biomass to th e stem and reproduction organs, but perennials invested more biomass to the leaves and roots . (3) In addition, plants from different grassland types differed in both biomass and morphology traits. Moreover forbs from natural grassland and wintergreen grassand had higher leaf and reproductive biomass, but plants from disturbed grasslandw had higher stem biomass. Conclusion: Our results suggested that functional type and lifeform decided the inherent scaling relationships between components of plants, but an thropogenic disturbance significantly impacted on the quantity of component biomass. This study has important theoretical and practical significance to understand the alpine plants response to climate change and an thropogenic disturbance as well as help scientific management of alpine meadow.

相似文献/References:

[1]丁建林,韩越,包维楷,等.岷江百合的生物量分配对策及其海拔效应[J].应用与环境生物学报,2014,20(02):254.[doi:10.3724/SP.J.1145.2014.00254]
 DING Jianlin,HAN Yue,BAO Weikai,et al.Biomass allocation strategies of Lilium regale and their altitudinal effects[J].Chinese Journal of Applied & Environmental Biology,2014,20(06):254.[doi:10.3724/SP.J.1145.2014.00254]
[2]周天阳,高景,贺俊东,等.高山草地环山样带异质坡向上3种植物的株高、叶片性状与生物量分配[J].应用与环境生物学报,2018,24(03):425.[doi:10.19675/j.cnki.1006-687x.2017.08029]
 ZHOU Tianyang,GAO Jing,et al.Plant height, leaf traits, and biomass allocation of three species at heterogeneous slope aspects along a transect in an alpine meadow[J].Chinese Journal of Applied & Environmental Biology,2018,24(06):425.[doi:10.19675/j.cnki.1006-687x.2017.08029]

备注/Memo

备注/Memo:
收稿日期: 2018-03-21 接受日期: 2018-04-13
*国家自然科学基金项目(31370594)和国家“十三五”重点研发计划项目(2017YFC0505002)资助?
**通讯作者(E-mail: xiangshuang@cib.ac.cn)
点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。
引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2018-05-02