干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠区大沙鼠对荒漠植物群落的扰动效应

Arid

	古尔班通古特沙漠区大沙鼠对荒漠植物群落的扰动效应
其他题名	Disturbance effects of Rhombomys opinms on desert plant community in Gurbantonggut Desert
	杨维康; 蒋慧萍; 王雪芹; 徐文轩
ISSN	1000-4890
出版年	2009
卷号	28 期号:10 页码:2020-2025
中文摘要	2006年5月,调查了大沙鼠洞区和对照区植物种类组成、盖度、密度、地上生物量,研究了大沙鼠对古尔班通古特沙漠植物群落物种组成和植被结构的影响.使用Mann-Whitney U检验表明,洞区植物种数(16.1)显著高于对照区(13.8)(Z=2.436,P<0.05);洞区半灌木种数(0.8)显著低于对照区(1.9)(Z=3.442,P<0.01).受大沙鼠扰动影响,大沙鼠洞区植被平均盖度(2.40%2.30%)显著低于对照区(14.46%6.82%)(Z=3.63,P<0.01);大沙鼠洞区地上植物生物量(6.52 g·m~(-2)6.30 g·m~(-2))显著低于对照区(23.3 g·m~(-2)12.85 g·m~(-2),Z=3.708,P<0.01).大沙鼠洞区Simpson指数(0.750.10,n=10)和Shannon-Wiener指数(0.780.12,n=10)显著高于对照区Simpson指数(0.610.16)和Shannon-Wiener指数(0.600.16)(t=2.362,P<0.05;t=2.948,P<0.01).结果表明:大沙鼠的掘洞、采食行为能够提高古尔班通古特沙漠1年生植物的物种多样性,并导致半灌木衰败.洞区的植物群落在一定程度上显现出次生演替的特征.
英文摘要	In May 2006,an investigation was made on the plant species composition,vegetation coverage,species density,and aboveground biomass at the Rhombomys opinms burrow sites and control sites in Gurbantonggut Desert,aimed to understand the disturbance effects of R. opinms on the plant species composition and vegetation structure in the Desert. Mann-Whitney U test showed that the plant species number at the burrow sites(16.1) was significantly higher than at control sites(13.8) (Z=2.436,P<0.05) ,while the sub-shrub species richness at the burrow sites(0.8) was significantly lesser than that at the control sites(1.9) (Z=3.442,P<0.01) . Under the disturbance of R. opinms,the average vegetation coverage at the burrow sites(2.40%2.30%) was far lesser than that at the control sites(14.46%6.82%) (Z=3.63,P<0.01,and the aboveground biomass at the burrow sites(6.52 g·m~(-2) 6.30 g·m~(-2)) was also lower than that at the control sites(23.3 g·m~(-2) 12.85 g·m~(-2),Z=3.708,P<0.01) . The Simpson Index(0.750.10,n=10) and Shannon-Wiener Index(0.780.12,n=10) of the burrow sites were significantly higher than those(0.610.16,n=10;0.600.16,n=10) of the control sites(t=2.362,P<0.05;t=2.948,P<0.01) . Our results suggested that the burrowing and feeding activities of R. opinms increased the diversity of annul plants and induced the deterioration of sub-shrubs,and to some extent,the plant community at the burrow sites was characterized by secondary succession.
中文关键词	大沙鼠 ; 洞穴 ; 扰动 ; 植物群落 ; 古尔班通古特沙漠
英文关键词	Rhombomys opinms burrow disturbance plant community Gurbantonggut Desert.
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:3691995
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/2XILL650/224109
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,蒋慧萍,王雪芹,等. 古尔班通古特沙漠区大沙鼠对荒漠植物群落的扰动效应[J]. 中国科学院新疆生态与地理研究所,2009,28(10):2020-2025.
APA	杨维康,蒋慧萍,王雪芹,&徐文轩.(2009).古尔班通古特沙漠区大沙鼠对荒漠植物群落的扰动效应.,28(10),2020-2025.
MLA	杨维康,et al."古尔班通古特沙漠区大沙鼠对荒漠植物群落的扰动效应".28.10(2009):2020-2025.