干旱区生态环境知识资源中心(Arid): 绵羊放牧绢蒿荒漠草地植物群落多样性及其环境解释

Arid

	绵羊放牧绢蒿荒漠草地植物群落多样性及其环境解释
其他题名	Plant community diversity in grazed Seriphidium semidesert grassland and its relationships with environmental factors
	陈乙实 1; 孙海荣 1; 李娜娜 1; 靳省飞 1; 车昭碧 1; 曹佳敏 1; 鲁为华 2
来源期刊	草业学报
ISSN	1004-5759
出版年	2019
卷号	28 期号:11 页码:1-11
中文摘要	对天山北坡放牧条件下的绢蒿草地进行野外调查,以探讨植物群落物种组成、多样性特征及其与环境因子之间的关系。结果表明:1)绵羊放牧过程中形成了明显的放牧强度梯度,草地利用率适中。通过除趋势对应分析(DCA)将放牧区内的植物群落划分为8个类型,各类型植物群落的物种多样性有显著差异,且群落间存在异质性; 2)采用除趋势对应典范分析法(DCCA)中的前项选择,对所获取的9个环境因子进行筛选,最终土壤有机质含量、粪便量、放牧强度、凋落物生物量、海拔、坡向等6个环境因子成为决定物种分布和群落结构组成的主导因素。DCCA排序结果反映出了实际的生态意义,有机质、放牧强度、粪便量在第一排序轴有明显的梯度变化,而坡向和凋落物则在第2轴上呈现出明显梯度变化,物种和群落也沿着上述环境要素的梯度变化而依次分布,很好地解释了放牧条件下绢蒿荒漠草地物种、群落与环境条件之间的关系。
英文摘要	This study investigated plant community species composition and biodiversity in grazed Seriphidium semidesert grassland,to explore the relationship between community structure and environmental factors.The results showed that:1)Grazed grassland had an obvious grazing gradient by sheep,and the utilization of grassland was reasonable.A detrended correspondence analysis revealed eight plant communities in the grazed area. There were significant differences in species diversity indexes among plant communities,and there was heterogeneity among communities;2)Six environmental variables(soil organic matter content,amount of feces, grazing intensity,litter biomass,altitude,and slope direction)were chosen by forward selection.The first axis of a detrended canonical correspondence analysis showed gradients of organic matter content,amount of feces, and grazing intensity,while the second axis showed gradients of litter biomass,altitude,and slope direction gradient among communities.The plant species and communities were distributed along gradients of environmental factors.Our results show that quantitative ecological methods provide more detailed information about ecological relationships between vegetation and the environment for grazed Seriphidium semidesert grassland.
中文关键词	绢蒿荒漠 ; 放牧 ; 群落多样性 ; 排序分析
英文关键词	Seirphidiumsemidesert grassland grazing community diversity DCCA(detrended canonical correspondence analysis)ordination
语种	中文
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6608504
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315767
作者单位	1.石河子大学动物科技学院, 石河子, 新疆 832003, 中国; 2.石河子大学动物科技学院;;新疆省部共建绵羊遗传改良与健康养殖国家重点实验室, ;;新疆省省部共建绵羊遗传改良与健康养殖国家重点实验室, 石河子;;石河子, 新疆;;新疆 832003;;832003, 中国
推荐引用方式 GB/T 7714	陈乙实,孙海荣,李娜娜,等. 绵羊放牧绢蒿荒漠草地植物群落多样性及其环境解释[J]. 石河子大学,2019,28(11):1-11.
APA	陈乙实.,孙海荣.,李娜娜.,靳省飞.,车昭碧.,...&鲁为华.(2019).绵羊放牧绢蒿荒漠草地植物群落多样性及其环境解释.草业学报,28(11),1-11.
MLA	陈乙实,et al."绵羊放牧绢蒿荒漠草地植物群落多样性及其环境解释".草业学报 28.11(2019):1-11.