干旱区生态环境知识资源中心(Arid): 青海共和盆地封育季节草场生物量、种群与生境变化

Arid

	青海共和盆地封育季节草场生物量、种群与生境变化
其他题名	Changes of above-ground biomass,species population and biotope in grazed and ungrazed grassland in Qinghai Gong-he Basin
	孙建光 1; 李保国 2; 卢琦3
ISSN	1671-3990
出版年	2006
卷号	14 期号:3 页码:25-27
中文摘要	试验研究青海共和盆地封育季节草场生物量、种群与生境变化结果表明，封育草地生物量和株高均高于未封育草地，且依据未封育与封育草地生物量之比，共和盆地草场退化等级为中度和重度；由于沙生和荒漠植被入侵并逐渐成为优势种或伴生优势种，退化草地优势物种生物量降低，依据其他物种与优势物种生物量之比，确定共和盆地草场退化等级〈0．1为弱度，0．1-0．5为轻度，0．5～1．0为中度，1．0～5．0为重度，〉5．0为严重，芨芨草草原处于中度、重度退化，针茅草原处于重度和严重退化；共和盆地封育草场存在两极恢复（原草场和新退化草场类型），而未封育草场只有单极退化（荒漠），故过牧不仅使共和盆地草地退化，且使草地生境不断恶化，荒漠化程度加剧；相反封育有利于草地恢复和生境改善。
英文摘要	The changes of above-ground biomass,species population and biotope in the gazed and ungrazed grassland in Qinghai Gong-he Basin were studied. The results indicate that the above-ground biomass and height of plant in ungrazed grassland are higher than those in the grazed grassland,and the degeneration intensity of grassland is medium and sever aeeording to the ratio of biornasses between the ungrazed and grazed grasslands in Gong-he; the desert vegetations invade and gradually become the dominant or secondary dominant species, the biomass of predominant species is decreased, so acoording to the ratio of biornasses between other species and dominant species, 〈 0.1 is a slight degeneration, 0.1 - 0.5 is a light degeneration, 0.5 - 1.0 is a medium degeneration, 1.0 - 5.0 is a sever degeneration, and 〉 5.0 is a very sever degeneration, and Jijicao grassland is of a medium and sever degeneration, stipa grassland is of a sever and very sever degeneration at present; there are two directional restorations（ former grassland and other degraded grassland）in ungrazed grassland of Qinghai Gong-he Basin, but a single directional degeneration to desert,so it makes the Gong-he Basin biotope and desertification poorer.
中文关键词	草场退化与恢复 ; 生物量 ; 生境 ; 共和盆地
英文关键词	Grassland degeneration and restoration Biomass Biotope Gong-he Basin
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:2451662
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220503
作者单位	1.新疆财经学院, 乌鲁木齐, 新疆 830012, 中国; 2.中国农业大学资源环境学院, 北京 100094, 中国; 3.中国林业科学院, 北京 100091, 中国
推荐引用方式 GB/T 7714	孙建光,李保国,卢琦. 青海共和盆地封育季节草场生物量、种群与生境变化[J]. 中国农业大学,2006,14(3):25-27.
APA	孙建光,李保国,&卢琦.(2006).青海共和盆地封育季节草场生物量、种群与生境变化.,14(3),25-27.
MLA	孙建光,et al."青海共和盆地封育季节草场生物量、种群与生境变化".14.3(2006):25-27.