青藏高原3种风毛菊属植物的繁殖分配与海拔高度的相关性

doi:10.3724/SP.J.1258.2012.00039

摘要/Abstract

摘要：

对产于青藏高原东缘的风毛菊属植物柳叶菜风毛菊(Saussurea epilobioides)、尖苞风毛菊(S. subulisquama)和钝苞雪莲(S. nigrescens)的30个居群的繁殖分配及其与海拔间的相关性进行了初步研究。通过采样调查法和烘干重量法, 检测了不同海拔3种风毛菊属植物的繁殖分配。结果显示: 1)海拔与植株个体大小呈负相关关系; 2)海拔与繁殖分配呈正相关关系, 将个体大小作为协变量, 去除其影响, 海拔与繁殖分配仍呈正相关关系; 3)个体大小与繁殖分配呈负相关关系, 将海拔作为协变量, 去除其影响, 个体大小和繁殖分配的相关性消失。研究表明, 海拔作为外界因子对繁殖分配有显著的影响, 这种影响不依赖于植物的内部因素(如个体大小的差异)。

关键词: 海拔, 相关性, 个体大小, 繁殖分配, 风毛菊属

Abstract:

Aims The study of reproductive allocation is important to understand the environmental factors that contribute to population differences and species evolution. Our objective is to examine variation in reproductive allocation among 30 populations representing three Saussurea species across an elevation gradient on China’s Qinghai- Tibetan Plateau.
Methods We used population means to evaluate sources of variation in reproductive allocation within species. In addition, we used the sample investigation method and dry weight to evaluate biomass.
Important findings Reproductive allocation is negatively correlated with mean plant size; however, this relationship is not statistically significant when the effect of elevation is controlled statistically. Among populations within species, reproductive allocation increases with elevation, and this relationship persists even when the effect of mean plant size is controlled statistically. Altitude is a main influence on reproductive allocation.

Key words: altitude, correlation, individual size, reproductive allocation, Saussurea

王一峰, 刘启茜, 裴泽宇, 李海燕. 青藏高原3种风毛菊属植物的繁殖分配与海拔高度的相关性. 植物生态学报, 2012, 36(1): 39-46. DOI: 10.3724/SP.J.1258.2012.00039

WANG Yi-Feng, LIU Qi-Qian, PEI Ze-Yu, LI Hai-Yan. Correlation between altitude and reproductive allocation in three Saussurea species on China’s Qinghai-Tibetan Plateau. Chinese Journal of Plant Ecology, 2012, 36(1): 39-46. DOI: 10.3724/SP.J.1258.2012.00039

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https://www.plant-ecology.com/CN/Y2012/V36/I1/39

图/表 7

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种名 Species name	编号 No.	经纬度 Longitude and latitude	海拔 Elevation (m)	生境 Habitat	采集日期 Collection date
柳叶菜风毛菊 Saussurea epilobioides	52	35o1'8" E, 102o54'52" N	2 800	山坡灌丛 Hillside shrub	2009-9-10
	179	34o27'41" E, 103o5'54" N	3 100	山坡灌丛草地 Hillside bushes and meadow	2009-9-12
	10	34o25'51" E, 103o36'14" N	3 200	山坡草地 Hillside meadow	2009-9-12
	58	34o3'42" E, 103o13'49" N	3 300	山坡草地灌丛 Hillside meadow and shrub	2009-9-15
	166	33o59'37" E, 102o2'28" N	3 400	山坡灌丛 Hillside shrub	2009-9-13
	98	34o3'42" E, 103o13'49" N	3 400	山坡草地灌丛 Hillside meadow and shrub	2009-9-15
	150	34o5'6" E, 101o42'51" N	3 420	灌丛 Shrub	2009-9-13
	155	34o1'48" E, 102o4'46" N	3 600	山坡草地 Hillside meadow	2009-9-13
	106	34o3'42" E, 103o13'49" N	3 700	山坡草地河边 Hillside meadow of riverside	2009-9-15
	39	34o56'32" E, 103o46'1" N	3 800	山坡草地 Hillside meadow	2009-9-13
	211	34o1'48" E, 102o4'46" N	4 000	草滩 Grass land	2009-9-13
尖苞风毛菊 S. subulisquama	128	35o0'15" E, 102o54'19" N	2 800	山坡灌丛 Hillside shrub	2009-9-17
	76	35o1'44" E, 102o54'32" N	3 200	山坡灌丛 Hillside shrub	2009-9-10
	191	34o3'42" E, 103o13'49" N	3 300	山坡草地 Hillside meadow	2009-9-10
	174	34o0'9" E, 102o3'47" N	3 420	山坡草地 Hillside meadow	2009-9-15
	208	34o4'52" E, 103o13'14" N	3 580	山坡草地 Hillside meadow	2009-9-13
	70	34o4'52" E, 103o13'14" N	3 850	沙地 Sand land	2009-9-17
	162	34o56'32" E, 103o46'1" N	3 800	沙坡草地 Shapo meadow	2009-9-17
	206	34o1'48" E, 102o4'46" N	4 000	山坡草地 Hillside meadow	2009-9-13
钝苞雪莲 S. nigrescens	121	34o56'32" E, 103o46'1" N	2 800	路边岩石 Rocks of roadside	2009.9.16
	61	34o12'46" E, 103o53'47" N	3 100	沟谷, 路边 Gully, roadside	2009-9-15
	124	34o57'47" E, 103o39'43" N	3 200	路边灌丛 Roadside shrub	2009-9-16
	123	34o56'32" E, 103o46'1" N	3 300	路旁, 岩石 Roadside, rock	2009-9-16
	78	34o49'4" E, 102o41'26" N	3 400	山坡草地 Hillside meadow	2009-9-14
	25	34o25'51" E, 103o36'14" N	3 400	山坡草地 Hillside meadow	2009-9-12
	212	34o4'0" E, 101o55'5" N	3 420	草地 Meadow	2009-9-13
	33	34o4'0" E, 101o55'5" N	3 600	草地 Meadow	2009-9-13
	84	34o49'4" E, 102o41'26" N	3700	山坡草地 Hillside meadow	2009-9-14
	38	34o1'48" E, 102o4'46" N	3 800	山坡草地 Hillside meadow	2009-9-13
	158	33o22'11" E, 33o22'11" N	4 000	山坡草地 Hillside meadow	2009-9-13

种名 Species name	编号 No.	经纬度 Longitude and latitude	海拔 Elevation (m)	生境 Habitat	采集日期 Collection date
柳叶菜风毛菊 Saussurea epilobioides	52	35o1'8" E, 102o54'52" N	2 800	山坡灌丛 Hillside shrub	2009-9-10
	179	34o27'41" E, 103o5'54" N	3 100	山坡灌丛草地 Hillside bushes and meadow	2009-9-12
	10	34o25'51" E, 103o36'14" N	3 200	山坡草地 Hillside meadow	2009-9-12
	58	34o3'42" E, 103o13'49" N	3 300	山坡草地灌丛 Hillside meadow and shrub	2009-9-15
	166	33o59'37" E, 102o2'28" N	3 400	山坡灌丛 Hillside shrub	2009-9-13
	98	34o3'42" E, 103o13'49" N	3 400	山坡草地灌丛 Hillside meadow and shrub	2009-9-15
	150	34o5'6" E, 101o42'51" N	3 420	灌丛 Shrub	2009-9-13
	155	34o1'48" E, 102o4'46" N	3 600	山坡草地 Hillside meadow	2009-9-13
	106	34o3'42" E, 103o13'49" N	3 700	山坡草地河边 Hillside meadow of riverside	2009-9-15
	39	34o56'32" E, 103o46'1" N	3 800	山坡草地 Hillside meadow	2009-9-13
	211	34o1'48" E, 102o4'46" N	4 000	草滩 Grass land	2009-9-13
尖苞风毛菊 S. subulisquama	128	35o0'15" E, 102o54'19" N	2 800	山坡灌丛 Hillside shrub	2009-9-17
	76	35o1'44" E, 102o54'32" N	3 200	山坡灌丛 Hillside shrub	2009-9-10
	191	34o3'42" E, 103o13'49" N	3 300	山坡草地 Hillside meadow	2009-9-10
	174	34o0'9" E, 102o3'47" N	3 420	山坡草地 Hillside meadow	2009-9-15
	208	34o4'52" E, 103o13'14" N	3 580	山坡草地 Hillside meadow	2009-9-13
	70	34o4'52" E, 103o13'14" N	3 850	沙地 Sand land	2009-9-17
	162	34o56'32" E, 103o46'1" N	3 800	沙坡草地 Shapo meadow	2009-9-17
	206	34o1'48" E, 102o4'46" N	4 000	山坡草地 Hillside meadow	2009-9-13
钝苞雪莲 S. nigrescens	121	34o56'32" E, 103o46'1" N	2 800	路边岩石 Rocks of roadside	2009.9.16
	61	34o12'46" E, 103o53'47" N	3 100	沟谷, 路边 Gully, roadside	2009-9-15
	124	34o57'47" E, 103o39'43" N	3 200	路边灌丛 Roadside shrub	2009-9-16
	123	34o56'32" E, 103o46'1" N	3 300	路旁, 岩石 Roadside, rock	2009-9-16
	78	34o49'4" E, 102o41'26" N	3 400	山坡草地 Hillside meadow	2009-9-14
	25	34o25'51" E, 103o36'14" N	3 400	山坡草地 Hillside meadow	2009-9-12
	212	34o4'0" E, 101o55'5" N	3 420	草地 Meadow	2009-9-13
	33	34o4'0" E, 101o55'5" N	3 600	草地 Meadow	2009-9-13
	84	34o49'4" E, 102o41'26" N	3700	山坡草地 Hillside meadow	2009-9-14
	38	34o1'48" E, 102o4'46" N	3 800	山坡草地 Hillside meadow	2009-9-13
	158	33o22'11" E, 33o22'11" N	4 000	山坡草地 Hillside meadow	2009-9-13