青藏高原高寒草甸两种优势植物的生长及其CNP化学计量特征对模拟增温的响应
Effects of experimental warming on the growth and stoichiometrical characteristics of two dominant species (Kobresia pygmaea and Kobresia tibetica) in alpine meadow of the Tibetan Plateau
查看参考文献39篇
文摘
|
以青藏高原高寒草甸和高寒沼泽中的两种优势物种小嵩草(Kobresia pygmaea)和藏嵩草(Kobresia tibetica)为研究对象,采用开顶式增温室(OTCs)模拟气候变暖,对比分析两种植物叶片形态和解剖结构特征、根活性及地上一地下部分化学计量特征对增温的响应差异。结果表明:增温显著增加了小嵩草叶片的长度和叶片的数量,也显著增加了藏嵩草株高和叶片长度;增温没有明显改变小嵩草和藏嵩草的叶片上表皮厚度、下表皮厚度、下表皮细胞角质层厚度、叶肉细胞长和叶肉细胞宽;增温增加了小嵩草根系活跃吸收面积,对小嵩草和藏嵩草其他根系活性指标没有显著影响;增温降低了小嵩草地上部分N含量,对小嵩草地上部分C、P含量没有影响;增温降低了藏嵩草地上部分C、N含量,对P含量没有影响;增温增加了小嵩草和藏嵩草地上部分C/N比,提高了两种优势植物对氮素的长期利用效率;增温对小嵩草地下部分化学计量学特征没有影响,而降低了藏嵩草地下部分C含量和C/N比。 |
其他语种文摘
|
To investigate effects of warming on leaf morphology,anatomical structure,root activities and above- and belowground parts of Kobresia pygmaea and Kobresia tibetica in alpine meadow and alpine swamp of the Tibetan Plateau in China, a warming experiment was carried out using open-top chambers to simulate climatic warming. The results showed that the warming significantly increased the leaf length and leaf number of the Kobresia pygmaea, and significantly increased the plant height and leaf length in Kobresia tibetica. But there were no significant effects of warming on the thickness of upper cuticle,low cuticle,the cuticular layer of the low cuticle cell,the length and the width of mesophyll cells in the Kobresia pygmaea and Kobresia tibetica. Warming significantly increased the root active absorption area in Kobresia pygmaea. Moreover,warming decreased the N concentrations of aboveground in Kobresia pygmaea,but no effect of warming on C and P concentration was detected, warming decreased the C and N concentrations of aboveground in Kobresia pygmaea,but have no effect of warming on P concentration. Increasing C/N ratio in aboveground with warming indicated that warmer temperature could increase nitrogen use efficiency in both Kobresia pygmaea and Kobresia tibetica. Warming didn't affect C, N,and P stoichiometry in the belowground part of Kobresia pygmaea,but decreased the C concentration and C/N ratio in below-ground of Kobresia tibetica. |
来源
|
生态学报
,2017,37(12):4118-4127 【核心库】
|
DOI
|
10.5846/stxb201606161173
|
关键词
|
小嵩草
;
藏嵩草
;
C、N、P化学计量学
;
解剖特征
;
根活性
|
地址
|
中国科学院水利部成都山地灾害与环境研究所, 成都, 610041
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1000-0933 |
学科
|
植物学 |
基金
|
国家重大科学研究计划
;
国家自然科学基金面上项目
;
国家科技支撑计划项目
;
自然科学基金项目
|
文献收藏号
|
CSCD:6015865
|
参考文献 共
39
共2页
|
1.
Vitousek P M. Beyond global warming: ecology and global change.
Ecology,1994,75(7):1861-1876
|
被引
143
次
|
|
|
|
2.
IPCC.
Climate change: The Physical science basis. The Fifth Assessment Report of Working Group I (WGI),2013
|
被引
2
次
|
|
|
|
3.
Liu X D. Climatic warming in the Tibetan Plateau during recent decades.
International Journal of Climatology,2000,20(14):1729-1742
|
被引
267
次
|
|
|
|
4.
Yang Yan. Responses in leaf functional traits and resource allocation of a dominant alpine sedge (Kobresia pygmaea) to climate warming in the Qinghai-Tibetan Plateau permafrost region.
Plant & Soil,2011,349(1/2):377-387
|
被引
22
次
|
|
|
|
5.
石福孙. 模拟增温对川西北高寒草甸两种典型植物生长和光合特征的影响.
应用与环境生物学报,2009,15(6):750-755
|
被引
33
次
|
|
|
|
6.
Klanderud K. Simulated climate change altered dominance hierarchies and diversity of an alpine biodiversity hotspot.
Ecology,2005,86(8):2047-2054
|
被引
36
次
|
|
|
|
7.
余欣超. 青藏高原两种高寒草甸地下生物量及其碳分配对长期增温的响应差异.
科学通报,2015(4):379-388
|
被引
21
次
|
|
|
|
8.
江肖洁. 增温对苔原土壤和典型植物叶片碳、氮、磷化学计量学特征的影响.
植物生态学报,2014,38(9):941-948
|
被引
12
次
|
|
|
|
9.
李娜. 短期增温对青藏高原高寒草甸植物群落结构和生物量的影响.
生态学报,2011,31(4):895-905
|
被引
58
次
|
|
|
|
10.
周华坤. 模拟增温效应对矮嵩草草甸影响的初步研究.
植物生态学报,2000,24(5):547-553
|
被引
87
次
|
|
|
|
11.
Lake J A. Plant development: signals from mature to new leaves.
Nature,2001,411(6834):154-154
|
被引
31
次
|
|
|
|
12.
齐曼·尤努斯. 干旱胁迫下尖果沙枣幼苗的根系活力和光合特性.
应用生态学报,2011,22(7):1789-1795
|
被引
27
次
|
|
|
|
13.
羊留冬. 短期增温对贡嘎山峨眉冷杉幼苗生长及其CNP化学计量学特征的影响.
生态学报,2011,31(13):3668-3676
|
被引
31
次
|
|
|
|
14.
Grabherr G. Climate effects on mountain plants.
Nature,1994,369(6480):448-448
|
被引
73
次
|
|
|
|
15.
Yang Y. Physiological responses of Kobresia pygmaea to warming in Qinghai-Tibetan Plateau permafrost region.
Acta Oecologica,2012,39(2):109-116
|
被引
5
次
|
|
|
|
16.
李娜. 模拟增温对长江源区高寒草甸土壤养分状况和生物学特性的影响研究.
土壤学报,2010,47(6):1214-1224
|
被引
39
次
|
|
|
|
17.
张志良.
植物生理学实验指导,1990
|
被引
253
次
|
|
|
|
18.
Ma W H. Environmental factors covary with plant diversityproductivity relationships among Chinese grassland sites.
Global Ecology & Biogeography,2010,19(2):233-243
|
被引
42
次
|
|
|
|
19.
Elmendorf S C. Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time.
Ecology Letters,2012,15(2):164-175
|
被引
21
次
|
|
|
|
20.
Walther G R. Trends in the upward shift of Alpine plants.
Journal of Vegetation Science,2009,16(5):541-548
|
被引
38
次
|
|
|
|
|