干旱区生态环境知识资源中心(Arid): 内蒙古不同草地类型隐子草种群对放牧强度的响应

Arid

	内蒙古不同草地类型隐子草种群对放牧强度的响应
其他题名	Response of Cleistogenes to Grazing Intensity in Different Grasslands of Inner Mongolia
	秦洁; 韩国栋; 王忠武; 乔江; 武倩
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2016
卷号	25 期号:1 页码:36-42
中文摘要	放牧胁迫使隐子草(Cleistogenes)种群成为退化草地的优势种,而继续加重放牧致使隐子草逐步衰退。由于在退化过程中隐子草作为退化指示种和重度退化的过渡种其种群格局将发生变化,故以内蒙古草甸草原、典型草原、荒漠草原为研究对象,设置轻度、中度、重度以及对照样地4个放牧强度,经过5年的连续野外试验和研究,对隐子草在不同放牧强度下的变化趋势进行分析,以期为草地管理提供理论基础。研究结果表明,(1)无论是草甸草原还是典型草原、荒漠草原,退化草地指示种隐子草都呈现明显的随放牧强度增加而先增加后减少的趋势,只是不同草地类型对于年度以及峰值出现的情况是有差异的。(2)草甸草原和典型草原都是以中度放牧强度显著最高,而荒漠草原只在降水相对较高的2008年以中度放牧最高,在降水较少的2006年、2007年则以轻度放牧显著最高。(3)不同草地类型双因素方差分析结果表明只在典型草原中,年度因素对无芒隐子草(Cleistogenes songorica)有显著影响。草地类型和放牧对隐子草有显著影响(P<0.01),且草地类型、放牧和年度的两两交互作用对隐子草的影响显著(P<0.01)。
英文摘要	Cleistogenes populations become dominant species under moderate grazing pressure, and began to decline with a heavier grazing in the degraded grassland. There is a special pattern that Cleistogenes are indicator species in degraded grasslands and a transient species in the severe degradation grasslands during the degradation process. In this research, we focused on Cleistogenes populations changes under four grazing intensity (Light grazing, moderate grazing, heavy grazing and control) in meadow steppe, typical steppe and desert steppe in Inner Mongolia five years continuous experiment and tried to analysis the variation tendency of Cleistogenes with grazing intensity, to provide theoretical basis for the management of rangeland. The results showed that: (1) Cleistogenes had an increasing trend at first and then decreased in th three types of steppes with the increasing grazing intensity. But the peak points were different in different years and steppes. (2) The relative biomass of Cleistogenes squarrosas was the the highest under moderate grazing in meadow steppe and typical steppe in every experimental year, while the relative biomass of Cleistogenes songorica was the highest only in 2008 with more precipitation under moderate grazing, and in 2006 and 2007 with insufficient precipitation under light grazing in desert steppe. (3) By comparison of two-factor analysis of different steppe types, the years have significant effect on Cleistogenes squarrosas in the typical steppe. The steppe types, grazing intensities and the interaction have strong effect on Cleistogenes. And the effects of the interaction between years and steppe types, the interaction between years and grazing intensities on Cleistogenes were significant.
中文关键词	草地 ; 隐子草 ; 放牧 ; 降水
英文关键词	grassland degradation Cleistogenes grazing
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5647277
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234711
作者单位	内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010018, 中国
推荐引用方式 GB/T 7714	秦洁,韩国栋,王忠武,等. 内蒙古不同草地类型隐子草种群对放牧强度的响应[J]. 内蒙古农业大学,2016,25(1):36-42.
APA	秦洁,韩国栋,王忠武,乔江,&武倩.(2016).内蒙古不同草地类型隐子草种群对放牧强度的响应.生态环境学报,25(1),36-42.
MLA	秦洁,et al."内蒙古不同草地类型隐子草种群对放牧强度的响应".生态环境学报 25.1(2016):36-42.