Morphological Plasticity and the Biomass Allocation Models of Miniaturized Leymus chinensis

doi:10.11733/j.issn.1007-0435.2013.02.008

›› 2013, Vol. 21 ›› Issue (2): 260-264.DOI: 10.11733/j.issn.1007-0435.2013.02.008

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Morphological Plasticity and the Biomass Allocation Models of Miniaturized Leymus chinensis

ZHONG Meng-ying¹, FAN Qing-li¹, ZHANG Ya-jun¹, WU Rui-xin^1,2, KAN Yu-chen², WANG Jian-xun¹, SHAO Xin-Qing¹

1. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
2. Pratacultural Institute, Gansu Agricultural University, Lanzhou, Gansu Province 730070, China

Received:2012-10-24 Revised:2012-12-01 Online:2013-04-15 Published:2013-04-23

矮化羊草形态可塑性及生物量分配模式研究

钟梦莹¹, 樊青丽¹, 张亚军¹, 武瑞鑫^1,2, 阚雨晨², 王建勋¹, 邵新庆¹

1. 中国农业大学动物科技学院, 北京 100193;
2. 甘肃农业大学草业学院, 甘肃兰州 730070

通讯作者: 邵新庆,shaoxinqing@163.com
作者简介:钟梦莹(1988-),女,黑龙江绥化人,硕士研究生,研究方向为草地生态管理和恢复研究,E-mail: zhongmengying9@163.com
基金资助:
国家科技支撑项目(2008BAD95B03);公益性行业(农业)科研专项(200903060)(201003061);国家牧草产业体系项目(CARS-35)资助

Abstract

Abstract: Severe and prolonged grazing lead to Leymus chinensis miniaturized in typical grassland. Miniaturized L. chinensis is formed to adapt to grazing interference mechanism in the form element and biomass allocation mode. The different components and biomass allocation modes of both normal and miniaturized L. chinensis are compared in this paper through laboratory pot experiment. Results show that the average height of miniaturized L. chinensis is 2.5% lower than that of normal. Leaf length, root and root joint length fall by 3.1%, 8.3% and 3.8% compared with normal. Blade width reduced by 8.7% is significantly lower than normal. Miniaturized L. chinensis meristem increased by 21.9% is significantly higher than that of normal. The individual biomass, stem/leaf and ground/underground biomass ratio of miniaturized L. chinensis reduced by 10.2%, 11.4% and 2.2%, respectively. Thus miniaturized L. chinensis has increased tiller number, underground root input in matter and energy in order to deal with the unfavorable climate change, livestock feeding and trampling.

Key words: Leymus chinensis, Miniaturization, Morphological plasticity, Biomass allocation

摘要： 长期过度放牧干扰会导致典型草原羊草(Leymus chinensis)矮化现象,矮化羊草在形态构件和生物量分配模式方面都形成了适应放牧干扰的机制,本文通过实验室盆栽试验,比较了正常羊草和矮化羊草在构件和生物量分配模式上的差异。结果表明:矮化羊草植株的平均高度比正常羊草降低了2.5%,叶长、根长、根节长分别下降3.1%,8.3%和3.8%;叶宽显著低于正常羊草,降低了8.7%(P<0.05),而矮化羊草的萌蘖点则显著高于正常羊草,增加了21.9%(P<0.05);矮化羊草单株生物量降低10.2%,茎叶比降低11.4%,地上/地下生物量比值降低2.2%。由此可知,矮化羊草以增加分蘖数、加大地下根部物质和能量的投入等来应对不利气候变化和家畜采食及践踏。

关键词: 羊草, 矮化, 形态可塑性, 生物量分配

CLC Number:

Q346

ZHONG Meng-ying, FAN Qing-li, ZHANG Ya-jun, WU Rui-xin, KAN Yu-chen, WANG Jian-xun, SHAO Xin-Qing. Morphological Plasticity and the Biomass Allocation Models of Miniaturized Leymus chinensis[J]. , 2013, 21(2): 260-264.

钟梦莹, 樊青丽, 张亚军, 武瑞鑫, 阚雨晨, 王建勋, 邵新庆. 矮化羊草形态可塑性及生物量分配模式研究[J]. , 2013, 21(2): 260-264.

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References

[1] Slade A J, Hutchings M J. The effects of nutrient availability on foraging in the clonal herb Glechoma hederacea[J]. Journal of Ecology,1987,75(1):95-112
[2] Brown J H, Whithmu T G, M Ernest S K. Complex species interactions and the dynamics of ecological systems: Long-term experiments[J]. Science,2001,293(5530):643-650
[3] Huber H. Architectural plasticity of stoloniferous and erect herbs in response to light climate[D]. Utrecht, Netherlands: Utrecht University,1997:100-105
[4] 国振杰,易津,张力君.海拔高度对羊草生物量和根茎形态可塑性的影响[J].干旱区资源与环境,2008,22(4):175-180
[5] Vickery P J. Grazing and net primary production of a temperate grassland [J]. Journal of Applied Ecology,1992,9(1):307-314
[6] Belsky A J.Does herbivory benefit plants? A review of the evidence[J]. American Naturalist,1986,127(6):870-892
[7] Hidayati S N, Walck J L.Contrasting seed germination patterns for intracontinental disjuncts of Heuchera (Saxifragaceae) in North America: the eastern temperate H. parviflora and western montane H. cylindrica [J]. Canadian Journal of Botany,2002,80(11):1185-1192
[8] 刘志民,赵晓英,刘新民.干扰与植被的关系[J].草业学报,2002,11(4):1-9
[9] 王仁忠.放牧影响下羊草种群生物量形成动态的研究应用[J].应用生态学报,1997,8(5):505-509
[10] 李建东.我国的羊草草原[J].吉林师范大学学报,1978(1):145-159
[11] Abulfatih H A, Bazzaz F A.The biology of Ambrosia trifida L. IV. Demography of plants and leaves [J].New Phytologist,1980,84(1):107-110
[12] 郭继勋,祝廷成.气候因子对东北羊草草原羊草群落产量影响的分析[J].植物学报,1994,36(10):790-796
[13] 王玉辉,何兴元,周广胜.放牧强度对羊草草原的影响[J].草地学报,2002,10(1):45-49
[14] 刘颖,王德利,王旭,等.放牧强度对羊草草地植被特征的影响[J].草业学报,2002,11(2):22-28
[15] 张慧荣,杨持.不同生境条件下羊草种群构件的可塑性变化[J].内蒙古大学学报:自然科学版,2008,39(3):321-324
[16] 赵威,林光辉,韩兴国.羊草对过度放牧和刈割的生理生态响应[D].北京:中国科学院植物研究所,2006:1-2
[17] 杨允菲,李建东. 松嫩平原人工草地羊草和野大麦叶种群的趋同生长格局[J].草业学报,2003,12(5):38-43
[18] 李丽丽,王德力.中国东北样带长期放牧干扰下羊草种群表型可塑性及遗传多态性的初步研究[D].长春:东北师范大学,2010:36-37
[19] 邵新庆,石永红,韩建国,等.典型草原自然演替过程中土壤理化性质动态变化[J].草地学报,2008,16(6):567-571
[20] 沙磊,王堃.羊草对长期过度放牧的形态及其内源激素响应[D].北京:中国农业大学,2007:33-34
[21] Wang Yu-tong, Deng Bo, Wang Kun, et al. Responses of plant morphology and seed quality to long-term overgrazing in Leymus chinensis[J]. African Journal of Biotechnology,2011,10(80):18403-18408
[22] 王炜,梁存柱,刘钟龄. 草原群落退化与恢复演替中的植物个体行为分析[J].植物生态学报,2000,24(3):268-274
[23] 杜鹃,王德利. 羊草种群对放牧的表型可塑性研究[D].长春:东北师范大学,2004:27-28

Morphological Plasticity and the Biomass Allocation Models of Miniaturized Leymus chinensis

矮化羊草形态可塑性及生物量分配模式研究

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