干旱区生态环境知识资源中心(Arid): 大沙鼠掘洞对准噶尔荒漠植物群落的小尺度影响

Arid

	大沙鼠掘洞对准噶尔荒漠植物群落的小尺度影响
其他题名	Impact of burrows of the great gerbil on small-scale plant community in Junggar Desert, China
	杨维康; 乔建芳; 蒋慧萍; 高行宜
ISSN	1000-6060
出版年	2006
卷号	29 期号:2 页码:219-224
中文摘要	通过比较大沙鼠洞区和对照区植物种类组成、盖度和密度的差异,研究了大沙鼠掘洞对准噶尔荒漠植物群落物种组成和植被结构的小尺度影响.使用Mann-Whitney U检验表明,洞区植物种数(n=6.47)显著高于对照区(n=4.32)(z=5.55,p＜0.01);洞区半灌木种数(n=0.89)显著低于对照区(n=1.21)(z=2.70,p＜0.01).由于大沙鼠的采食,建群种盐生假木贼(Anabasis salsa)在洞群区的出现频率,密度以及高度均显著低于对照区;洞区草本植物种数(n=5.55)显著高于对照区(n=3.11)(z=6.65,p＜0.01).3种多年生草本植物在洞区的密度均显著高于其在对照区的密度.在大沙鼠洞区,由于废弃的鼠洞入口塌陷而形成的坑洼中沉积的疏松粗质沙土促进了沙生针茅(Stipa glareosa)和细叶鸢尾(Iris tenuifolia)的生长发育.8种一年生植物中,盐生草(Halogeton glomeratus)、对叶盐蓬(Grgensohnia oppositiflora)、小车前(Plantago minuta)、鹤虱(Lappula semiglabra)和黄芪(Astragalus sp.)的出现频率和密度在洞区均显著增加.尽管受到大沙鼠的采食,盐生草在洞区的出现频率和密度不仅没有减小,反而显著增加.这可能是由于大沙鼠对土壤的扰动,在洞区形成的裸地促进了盐生草等一年生植物的生长发育.
英文摘要	By Comparing species composition, vegetative cover, and species density between burrow sites and random sites, we studied the impact of great gerbil （Rhombomys opinms） burrows and associated soil-surface disturbance on plant species composition and vegetative structure in the junggar Desert. Burrow sites supported significantly greater plant species （ n = 6.47） compared with control sites （ n = 4.32）（ z = 5.55, p 〈 0.01 ）. The sub-shrub species richness at burrow sites （n = 0.89） was significantly less than at random sites （ n = 1. 21）（z = 2.70, p 〈 0.01 ）. The frequencies of occurrence, density, and the height of dominant sub-shrub, Anabasis salsa in the burrow sites decreased significantly in response to it foraged by great gerbil. The herb species richness at burrow sites（ n = 5.55） were significantly greater than at random sites （ n = 3.11 ）（ z = 6. 65, p 〈0.01）. The density of three perennial herbs species at burrow sites were significantly greater than at random sites. In burrow sites, the depressions formed from collapsed entrances holes, which contained coarse and loose sand promoted the growth of two perennial herb species： Stipa glareosa and Iris tenuifolia. The disturbed soil in the bare ground on burrow sites promote the germination and growth of annual herbs. Among 8 species of annual herbs, 5 species showed both significantly greater density and frequencies of occurrence in the burrow sites： Halogeton glomeratus , Girgensohnia oppositi flora , Plantago minuta , Lappula semiglabra ,and Astragalus sp. Unexpectedly, Halgeton, eatenby Rhombomys, did not decrease but increased in density in burrow sites. It ispossible that burrowing activities of great gerbil facilitate the occurrence of the Halogeton.
中文关键词	大沙鼠 ; 洞穴 ; 动植物相互作用 ; 植物种类组成 ; 准噶尔荒漠
英文关键词	great gerbil burrow plant- animal interaction plant species compo
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:2360529
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219669
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	杨维康,乔建芳,蒋慧萍,等. 大沙鼠掘洞对准噶尔荒漠植物群落的小尺度影响[J]. 中国科学院新疆生态与地理研究所,2006,29(2):219-224.
APA	杨维康,乔建芳,蒋慧萍,&高行宜.(2006).大沙鼠掘洞对准噶尔荒漠植物群落的小尺度影响.,29(2),219-224.
MLA	杨维康,et al."大沙鼠掘洞对准噶尔荒漠植物群落的小尺度影响".29.2(2006):219-224.