干旱区生态环境知识资源中心(Arid): 2003-2010年克氏针茅放牧草地资源的变化

Arid

	2003-2010年克氏针茅放牧草地资源的变化
其他题名	Variation of Sstipakryloviigrazing grassland resources from 2003,2007,and 2010
	赛西雅拉图 1; 白丽艳 1; 张萍 2
来源期刊	草业科学
ISSN	1001-0629
出版年	2014
卷号	31 期号:4 页码:607-613
中文摘要	对锡林郭勒克氏针茅(Stipa krylovii)草原5个典型聚居区的放牧草地,在2003、2007和2010年的冬春季和夏秋季放牧地定期进行植物群落调查。结果表明,围栏放牧草地常见植物有60种,草地建群种克氏针茅和羊草(Leymus chinensis)的优势度在冬春季和夏秋季两季草地中均保持递增,而草地沙化退化指示种猪毛菜(Salsola collina)优势度始终递减。随着放牧草地内牲畜平均占有草地面积的增加,克氏针茅、羊草等地带性植物种的优势度迅速增大,猪毛菜的优势度迅速减小,至每个牲畜平均占有草地面积大于3.5hm~2的3年后,猪毛菜退出草地植物群落的优势物种行列。锡林郭勒克氏针茅草原放牧草地植物群落的30年演替历程与由政府主导的一系列草地归属权改革引发放牧方式的变更动态相关,同时短期演替过程与牲畜草地资源占有量相关。
英文摘要	Plant community diversity was investigated in 5typical residential points of Stipa krylovii steppe during winter-spring and summer-autumnal seasons of 2003,2007,and 2010. The results demonstrated that there were almost 60plant species in the fenced plots of S. krylovii steppe. The dominance index of S. krylovii and Leymus chinensis increased gradually for the two growth seasons during the whole studied period,while,the dominance index of Salsola collinaa symbol of grassland desertification,decreased gradually. There were also seasonal differences of plant community between two growth seasons. The dominance index of L. chinensis and Allium polyrhizumin summer-autumnal seasons was higher than that in winter-spring seasons whereas the dominance index of S. krylovii and Carex duriusculain winter-spring seasons was higher than that in summer-autumnal seasons. The dominance index of the other species was similar in these two growth seasons. As stock-carrying capacity decreased or kept consistent,the dominance index of some zonal plant species such as S. krylovii and L. chinensis increased,whereas the dominance index of S. collinadecreased sharply. S. collinagradually quitted from the rank of dominant species after stoct-carrying capacicty>3. 5ha·livestock~(-1) three years. In S. krylovii steppe of Xilin Gol,the plant community successions of grazing grassland during 30years correlated with the changes of grazing systems and ownership of grazing grassland induced by government reforms. Short-term plant community succession of plant community correlated with stock-carrying capacity.
中文关键词	克氏针茅草地 ; 植物群落 ; 放牧草地 ; 演变机制
英文关键词	Stipa krylovii steppe plant community grazing grassland succession mechanism
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:5141693
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230840
作者单位	1.内蒙古师范大学地理科学学院, 呼和浩特, 内蒙古 010022, 中国; 2.宁夏大学农学院, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	赛西雅拉图,白丽艳,张萍. 2003-2010年克氏针茅放牧草地资源的变化[J]. 宁夏大学,2014,31(4):607-613.
APA	赛西雅拉图,白丽艳,&张萍.(2014).2003-2010年克氏针茅放牧草地资源的变化.草业科学,31(4),607-613.
MLA	赛西雅拉图,et al."2003-2010年克氏针茅放牧草地资源的变化".草业科学 31.4(2014):607-613.