干旱区生态环境知识资源中心(Arid): 内蒙古不同草地类型中羊草地上生物量对放牧强度的响应

Arid

	内蒙古不同草地类型中羊草地上生物量对放牧强度的响应
其他题名	Response of Leymus chinensis above-ground Biomass to Grazing Intensity in Different Grasslands of Inner Mongolia
	秦洁; 韩国栋; 乔江; 武倩; 靳宇曦
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2016
卷号	38 期号:4 页码:76-82
中文摘要	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个放牧梯度,经过5年连续野外实验,研究在不同草地类型中放牧对羊草地上生物量的影响。研究结果表明:随放牧强度的增加羊草地上生物量显著下降;在草甸草原中羊草地上生物量在重度放牧强度下最低,对照样地和重度放牧样地的羊草地上生物量与降水呈正相关关系;在典型草原中羊草地上生物量在对照样地中最高,中度放牧的羊草地上生物量与降水的负相关性达到显著水平;在荒漠草原中,放牧和年度的交互作用达到显著水平,羊草地上生物量在2005年表现出显著差异,轻度放牧显著高于其他放牧强度,羊草地上生物量在轻度放牧样地中与降水呈极显著负相关关系。
英文摘要	In order to determine the response of dominant species to different grazing intensities (light, moderate, heavy, and control), the above-ground biomass of Leymus chinensis was examined in meadow steppe, typical steppe and desert steppe, respectively. This study was conducted for 5 consecutive years to reveal the response of Leymus chinensis above-ground biomass to grazing. The results indicated that: The above ground biomass of L. chinensis was inversely related to grazing intensity. The biomass was the lowest in heavy grazing in meadow steppe, L. chinensis above-ground biomass increased with precipitation raising in the no-grazing and heavy grazing, and the correlation reached extremely remarkable level in heavy grazing. In typical steppe, the above-ground biomass of L. chinensis was significantly negative associated with precipitation in the moderate grazing. The interaction between grazing and year were significantly different in desert steppe, the above-ground biomass of L. chinensis in light grazing was higher than other treatments in 2005 year, and its biomass was significantly negative associated with precipitation in the light grazing. Therefore, the decrease of above-ground biomass of L. chinensis on different grazing intensity and steppe was different.
中文关键词	放牧强度 ; 羊草 ; 草地类型 ; 降水
英文关键词	Grazing intensity Leymus chinensis Grasslands Precipitation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5776708
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/2XILL650/235325
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,乔江,等. 内蒙古不同草地类型中羊草地上生物量对放牧强度的响应[J]. 内蒙古农业大学,2016,38(4):76-82.
APA	秦洁,韩国栋,乔江,武倩,&靳宇曦.(2016).内蒙古不同草地类型中羊草地上生物量对放牧强度的响应.中国草地学报,38(4),76-82.
MLA	秦洁,et al."内蒙古不同草地类型中羊草地上生物量对放牧强度的响应".中国草地学报 38.4(2016):76-82.