干旱区生态环境知识资源中心(Arid): 青藏高原高寒区草地生态环境系统退化研究

Arid

	青藏高原高寒区草地生态环境系统退化研究
其他题名	Degradation of the Eco-Environmental System in Alpine Meadow on the Tibetan Plateau
	王一博 1; 王根绪 1; 沈永平 2; 王彦莉 3
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2005
卷号	27 期号:5 页码:633-640
中文摘要	青藏高原高寒地区的草地生态环境是高原生态环境的重要组成部分.近几十年来,在人类活动的强烈干扰和自然环境变化的影响下,高寒草地生态环境严重退化.在退化草地选取典型样地,调查研究了草地退化后土壤水文过程、土壤结构、植被状况等的变化.结果表明:高原高寒地区草场退化以后,土壤水文过程都发生改变,植被退化越严重土壤含水量变化越强烈、土壤入渗过程越快.退化草地的植被群落演替变化明显,优势种群退化严重,植物个体出现了小型化现象.水土流失日趋严重,土壤贫瘠化、沙化、荒漠化增强,鼠虫害等自然灾害频繁.
英文摘要	The grassland environment in the cold regions of the Tibetan Plateau is an important parts of the tableland environment, because of the influence of the natural environment changes and the disturbances from the human activities; the meadow environment of the tableland is in great degradation now. In a representative area in the degraded meadow, the changes of the soil moisture in the grassland, the edaphic structures and the status of the vegetations are studied. It is revealed that after the grassland degradation, the courses of the soil moisture have changed a lot, and the more vegetation degenerates, the more soil moisture changes, and the process of the water entering into soil also becomes quick. Then, the succession of communities become more distinct, the preponderant plant degenerates greatly, and the plants become small. The soil erosion becomes heavy than ever and in the arid regions, desertification becomes more serious. The natural disasters, including the pests from rats and insects, will be fre-quent.
中文关键词	青藏高原 ; 草地生态 ; 退化
英文关键词	Tibetan Plateau meadow environment degradation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2029527
来源机构	中国科学院西北生态环境资源研究院 ; 兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205928
作者单位	1.兰州大学,资源环境学院, 兰州, 甘肃 730000, 中国; 2.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 3.白银市平川区水务局, 白银, 甘肃 730913, 中国
推荐引用方式 GB/T 7714	王一博,王根绪,沈永平,等. 青藏高原高寒区草地生态环境系统退化研究[J]. 中国科学院西北生态环境资源研究院, 兰州大学,2005,27(5):633-640.
APA	王一博,王根绪,沈永平,&王彦莉.(2005).青藏高原高寒区草地生态环境系统退化研究.冰川冻土,27(5),633-640.
MLA	王一博,et al."青藏高原高寒区草地生态环境系统退化研究".冰川冻土 27.5(2005):633-640.