黔北优势植物对槽谷型喀斯特生境的适应策略:基于功能性状与生态化学计量相关联的证据
Adaptation Strategies of Three Dominant Plants in the Trough-valley Karst Region of Northern Guizhou Province, Southwestern China, Evidence from Associated Plant Functional Traits and Ecostoichiometry
查看参考文献54篇
|
文摘
|
以黔北槽谷型喀斯特地区三种优势植物化香(Platycarya strobilacea)、马尾松(Pinus massoniana)和烟管荚蒾(Viburnum utile)为研究对象,测定其叶片、枝条和根系的功能性状与C、N、P、Ca、Mg元素含量,分析植物不同器官间功能性状和生态化学计量学的特征与关联,探讨优势物种对槽谷喀斯特环境的适应策略。结果表明:(1)叶片干物质含量在物种间无显著差异,比叶面积、枝干物质含量、枝密度、粗根密度和中根密度在种间差异显著,比叶面积种间变异最大(32.13%),而叶干物质含量种间变异最小(12.76%)。(2)比叶面积与叶干物质含量、粗根和中根密度呈显著负相关,叶干物质含量、枝干物质含量、枝密度、粗根密度和中根密度两两正相关。(3)植物C含量在叶片、枝条和根系中的分配较为均匀,N、P、Mg含量均表现为叶片>枝条>根系,C/N、C/P表现为根系>枝条>叶片;叶片N/P范围为10.89~27.39,平均值为17.75。(4)在相应器官内,N与P元素和N/P显著正相关,C与Ca、Mg元素显著负相关,Ca与Mg显著正相关,叶片Ca与叶片P显著负相关。(5)比叶面积与叶片N、P、Mg含量显著正相关,与叶片C含量显著负相关;粗根和中根组织密度与根Ca含量极显著正相关。这说明黔北槽谷喀斯特地区的优势植物在功能性状上产生分化,减少生态位重叠,以降低资源竞争。为适应干旱贫瘠环境,植物一方面形成低比叶面积、高干物质含量和高组织密度的功能性状组合,另一方面改变器官间的元素分配,增加枝条和根系的投资。 |
|
其他语种文摘
|
Three dominant woody species(Platycarya strobilacea, Pinus massoniana and Viburnum utile)were selected to determine plant functional traits and C, N, P, Ca and Mg contents of leaves, twigs and roots along an elevation gradient in the Langxi Watershed of northern Guizhou Province, southwestern China. The key features of functional traits and ecostoichiometry among different plant organs and their correlations were analyzed, the adaptive strategies of three dominant species to the trough-valley karst environment were further explored. Results showed that:(1)The leaf dry-matter contents(LDMC)of three dominant species had no significant interspecific variation, but specific leaf area(SLA), twig dry-matter content(TDMC), twig tissue density(TTD), coarse root tissue density(CRTD)and medium root tissue density(MRTD)had significant interspecific variation. The highest interspecific variation occurred in SLA(32.13%)and the lowest one in LDMC(12.76%).(2)SLA and LDMC, CRTD and MRTD had significant negative correlations, but LDMC, TDMC, TTD, CRTD and MRTD had parallel positive correlations.(3)The distribution of C contents in leaves, branches and roots was relatively uniform. N, P and Mg contents had the same trend of leaf > twig > root in three plants, the trend of C/N and C/P was root > twig > leaf, and the leaf N/P ranged from 10.89 to 27.39 with an average of 17.75.(4)In the corresponding plant organs, N was significantly and positively correlated with P and N/P, C was significantly and negatively correlated with Ca and Mg, Ca was significantly and positively correlated with Mg, while Ca was significantly and negatively correlated with P in leaves.(5)SLA had significant and positive correlations with contents of leaf N, P and Mg, but had a significant and negative correlation with leaf content of C. Ca contents in coarse and medium roots had very significant and positive correlations with the tissue densities of roots, indicating that the dominant plants in karst areas of northern Guizhou trough valley differentiated in their functional traits to reduce the overlap of niches and such to reduce the resource competition. In order to adapt the arid and infertile environment, on the one hand, karst plants developed multiple functional traits of lower specific leaf area, higher dry matter content and higher tissue density, on the other hand, they re-allocated the element distribution among organs and increased investments of twig and root. |
|
来源
|
地球与环境
,2020,48(4):413-423 【核心库】
|
|
DOI
|
10.14050/j.cnki.1672-9250.2020.48.061
|
|
关键词
|
槽谷型喀斯特
;
植物功能性状
;
生态化学计量学
;
适应策略
|
|
地址
|
1.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550081
2.
中国科学院大学, 北京, 100049
3.
浙江师范大学化学与生命科学学院, 浙江, 金华, 321004
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1672-9250 |
|
学科
|
植物学 |
|
基金
|
国家重点研发计划项目
|
|
文献收藏号
|
CSCD:6745492
|
参考文献 共
54
共3页
|
|
1.
王世杰. 中国南方喀斯特地区碳循环研究进展.
地球与环境,2017,45(1):2-9
|
CSCD被引
45
次
|
|
|
|
|
2.
朱守谦.
喀斯特森林生态研究(III),2003
|
CSCD被引
9
次
|
|
|
|
|
3.
王世杰. 喀斯特石漠化研究存在的问题与发展趋势.
地球科学进展,2007,22(6):573-582
|
CSCD被引
101
次
|
|
|
|
|
4.
郭柯. 我国西南喀斯特植物生态适应性与石漠化治理.
植物生态学报,2011,35(10):991-999
|
CSCD被引
114
次
|
|
|
|
|
5.
钟巧连. 黔中喀斯特木本植物功能性状变异及其适应策略.
植物生态学报,2018,42(5):562-572
|
CSCD被引
57
次
|
|
|
|
|
6.
庞志强. 滇中喀斯特41种不同生长型植物叶性状研究.
广西植物,2019,39(8):1126-1138
|
CSCD被引
18
次
|
|
|
|
|
7.
马姜明. 桂林尧山常见植物叶片性状研究.
广西师范大学学报(自然科学版),2012,30(1):77-82
|
CSCD被引
19
次
|
|
|
|
|
8.
习新强. 黔中喀斯特山区植物功能性状的变异与关联.
植物生态学报,2011,35(10):1000-1008
|
CSCD被引
23
次
|
|
|
|
|
9.
罗绪强. 茂兰喀斯特森林常见钙生植物叶片元素含量及其化学计量学特征.
生态环境学报,2014,23(7):1121-1129
|
CSCD被引
32
次
|
|
|
|
|
10.
皮发剑. 黔中天然次生林主要优势树种叶片生态化学计量特征.
生态环境学报,2016,25(5):801-807
|
CSCD被引
35
次
|
|
|
|
|
11.
曾昭霞. 桂西北喀斯特森林植物-凋落物-土壤生态化学计量特征.
植物生态学报,2015,39(7):682-693
|
CSCD被引
142
次
|
|
|
|
|
12.
俞月凤. 喀斯特峰丛洼地不同森林类型植物和土壤C、N、P 化学计量特征.
应用生态学报,2014,25(4):947-954
|
CSCD被引
113
次
|
|
|
|
|
13.
孟婷婷. 植物功能性状与环境和生态系统功能.
植物生态学报,2007,31(1):150-165
|
CSCD被引
309
次
|
|
|
|
|
14.
Cornelissen J H C. A handbook of protocols for standardised and easy measurement of plant functional traits worldwide.
Australian Journal of Botany,2003,51(4):335-380
|
CSCD被引
461
次
|
|
|
|
|
15.
Reich P B. The evolution of plant functional variation, traits, spectra, and strategies.
International Journal of Plant Sciences,2003,164(S3):S143-S164
|
CSCD被引
139
次
|
|
|
|
|
16.
Wilson P J. Specific leaf area and leaf dry matter content as alternative predictors of plant strategies.
The New Phytologist,1999,143(1):155-162
|
CSCD被引
236
次
|
|
|
|
|
17.
Elser J J. Nutritional constraints in terrestrial and freshwater food webs.
Nature,2000,408(6812):578-580
|
CSCD被引
464
次
|
|
|
|
|
18.
黄小波. 云南普洱季风常绿阔叶林152种木本植物叶片C、N、P化学计量特征.
生态学杂志,2016,35(3):567-575
|
CSCD被引
36
次
|
|
|
|
|
19.
Elser J J. Biological stoichiometry of plant production, metabolism, scaling and biological stoichiometry of plant production,metabolism, scaling and ecological response to global change.
New Phytologist,2010,186(3):593-608
|
CSCD被引
194
次
|
|
|
|
|
20.
Ryser P. Competitive ability of three ecologically contrasting grass species at low nutrient supply in relation to their maximal relative.
Bulletin of the Geobotanical Institute ETH Zurich,1996,62:3-12
|
CSCD被引
1
次
|
|
|
|
|
了解气象卫星更多信息，请访问