青藏高原东缘地区常见植物种子大小变异研究

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摘要

以青藏高原东部地区常见10科植物作为研究材料,从种子鲜、干重与海拔、生活型、植物丰富度等方面的相关性研究了其种子大小变异。结果表明:①禾本科和菊科植物是高寒草甸上的优势科,分别占到17.49%和22.76%。常见植物种子重量集中于0.1～10.0mg之间。②从种子大小与植物丰富度来讲,小种子的种类和数量多,大种子种类和数量则少。③不同的科之间、不同的生活型,其种子鲜重与干重之间均存在极显著的相关性。④在典型的高寒草甸上,是以多年生草本为主,占总数的61.61%。从草本、灌木到乔木,其种子重量逐渐增大。⑤从整体上说,种子大小与海拔存在极显著的线性负相关性,植物种子重量与生活型的相关性比种子大小与系统分类学的相关性高。

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	杨霞
	梁艳
	陈学林

关键词 ：种子大小, 海拔, 生活型, 植物丰富度, 青藏高原东缘

Abstract：

Some common plants among 10 families on the eastern Qinghai-Tibet plateau were chosen in this investigation,and the variation of their fresh as well as dry seed size were studied.The result showed that: ①The plants of gramineae and compositae are dominant species on the eastern Qinghai-Tibet plateau and consist of 17.49% and 22.76% total speices compsosition.In addition,the average seed size range from 0.1 to 10.0mg.②The abundance of plants with small-size seed is higher than those with big seed size.③Regardless the different taxonomic levels and different life forms,the fresh seed weight indicates significant correlation with the dry seed weight.④The perennial herb is the major life form in typical plateau and conisist of 61.61% total speices composition.As far as seed weight is concerned,the arbor is the heaviest,the shrub takes second place,the herb is the lightest.⑤There is significant linear correlation between the seed size and altitude,and the correlation of seed size and life forms is higher than the seed size and taxonomic levels.

Key words： seed size altitude the life form abundance of plants the eastern Qinghai-Tibet plateau

收稿日期: 2007-12-25

X173

基金资助:国家自然科学基金(30740307)

引用本文:

杨霞1, 梁艳1, 陈学林1,2*. 青藏高原东缘地区常见植物种子大小变异研究[J]. , 2007, 26(6): 483-489.
YANG Xia1, LIANG Yan1, CHEN Xue-lin1,2. Variation in seed size of some common plant species on the eastern Qinghai-Tibet Plateau. , 2007, 26(6): 483-489.

链接本文:

http://www.ecolsci.com/CN/Y2007/V26/I6/483

[1] 于顺利,MarceloSternberg,蒋高明,等.2005.地中海沿岸沙丘种子大小对植物及其种子多度的影响[J].生态学报,25(4):749-755.

[2] Hammond D S,Brown V K.1995.Seed size of woody plants in relation to disturbance,dispersal,soil type in wet neotropical forests[J].Ecology,76(8):2544-2561.

[3] 仲延凯,包青海,孙维,等.2001.割草干扰对典型草原土壤种子库种子数量与组成的影响---Ⅲ 120种植物种子的大小与重量[J].内蒙古大学学报:自然科学版,32(3):280-286.

[4] Silvertown J W.1981.Seed size,life span and germination date as co-adapted features of plant life history[J].American Naturalist,118:860-864.

[5] 宗文杰,刘坤,卜海燕,等.2006.高寒草甸51种菊科植物种子大小变异及其对种子萌发的影响研究[J].兰州大学学报:自然科学版,42(5):52-55.

[6] Moles A T,Westoby M.2003.Latitude,seed predation and seed mass[J].Biogeography,30:105-128.

[7] Moles A T,Ackerly D D,Tweddle J C,et al.2007.Global patterns in seed size[J].Global Ecology and Biogeography,16:109-116.

[8] 马绍宾,姜汉桥.1999.小檗科鬼臼科种子大小变异式样及其生物学意义[J].西北植物学报,19(4):715-724.

[9] 王孝安,王志高,肖娅萍.2004.太白红杉种群生殖对策研究I生育力和种子重量[J].兰州大学学报:自然科学版,40 (4):72-75.

[10] Bu H Y,Ch X L,Xu X L,et al.2007.Seed mass and germination in an alpine meadow on the eastern Tsinghai-Tibet plateau[J].Plant Ecology,191:127-149

[11] Blionis GJ & Vokou D.2002.Structural and functional divergence of Campanula spatulata subspecies on Mt Olympos (Greece)[J].Plant Systematics and Evolution,232:89-105.

[12] Pluess A R,Schütz W,Stücklin J.2005.Seed weight increase with altitude in Swiss Alps between related species but not among population of individual species[J].Oecologia,144:55-61

[13] Gera M,Gera N,Ginwal H S.2000.Seed trait variation in Dalbergia sissoo Roxb[J].Seed Science and Technology,28:467-475.

[14] Guo Q,Brown J H,Valone T J,et al.2000.Constraints of seed size on plant distribution and abundance[J].Ecology,81:2149-2155.

[15] 于顺利,陈宏伟,李晖.2007.种子重量的生态学研究进展[J].植物生态学报,31(6):989-997.

[16] 刘志民,李雪华,李荣平.2004.科尔沁沙地31种1年生植物萌发特性比较研究[J].生态学报,24(3):648-653.

[17] Westoby M,Leishman M,Jurado E.1996.Comparative ecology of seed size and dispersal[J].Philosophy Transport of Royal Society of London Biology,351:1309-1318.

[18] Thompson K,Rabinowitz D.1989.Do big plants have big seeds[J].American Naturalist,133:722-728.

[19] Moles A T,Acherly D D,Webb C O,et al.2005.A brief history of seed size[J].Scienc,307:576-580.