干旱区生态环境知识资源中心(Arid): 绿洲沉积特征及沉积模式

Arid

	绿洲沉积特征及沉积模式
其他题名	Characteristics of Oasis Sedimentation and Sendimentary Model
	穆桂金; 陈冬梅
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2005
卷号	28 期号:1 页码:1-5
中文摘要	绿洲沉积是指在绿洲生物发育、演化的环境中无机和有机物在地表和近地表层的沉积或沉淀作用.绿洲沉积是绿洲物质循环过程的重要环节,其沉积物不仅记录了物源组成、介质性质、能量状态及动力特征等,还记录了绿洲环境变化的大量信息.沉积物的颜色、组构、组成等方面表明绿洲沉积是可识别的.通过研究绿洲沉积,可以揭示绿洲物质循环、认识绿洲环境演变、解析绿洲对全球变化的响应,为绿洲低耗、高效、可持续发展理论模式的构建和技术创新提供科学依据.
英文摘要	Oasis sedimentation is a depositional process of organic and inorganic matters at the surface or subsurface of oasis vegetation-covered lands. The substances produced by oasis sedimentation are oasis deposits, and the layer composed of oasis deposits is oasis deposit layer. Oasis sedimentation is an important process of the circulation of oasis substances. Oasis deposits record not only the characteristics of composition, properties of the media, state of medium energy and dynamics, but also a large quantity of information of oasis-environmental changes. Oasis stands for a true type of in situ environment, but simultaneously, it also very sensitively responds to the regional or global environmental change. Therefore, oasis deposits are as significant as lacustrine deposits or aeolian deposits in post climatic and environmental changes. Oasis deposits are recognizable by their color, texture, structure and composition at a profile. Most popularly, oasis deposits settle at the fluvial sediments composed of sandy materials with beddings. The initial layers, which are distributed in lower, commonly presents flooding trace, and then the upper layers are with more evidences of bio-process. Organic-rich or peat layers are as result of typical natural oasis-biogenjc sedimentation. Correspondingly, man-made oasis deposits are also a vital part of the oasis sediments that include irrigation-genetic deposits, engineering deposits and dumping deposits. Horizontally, characteristics of natural oasis deposits vary with the patch-patterns of oasis, and form micro-facies with more complex boundary, which result from sedimentary medium and its energy properties, supplying direction, properties and richness, and redox environments. Furthermore, it is the multi-assembles of natural sediments and artificial ones to build variable oasis landscapes and to record rich signal of environment changes. Study on the oasis deposits will provide a new valuable perspective to comprehend the oasis environmental change in the past, make the oasis substance circulation of the present clear, understand the processes of oasis responding to global change in detail, and finally offer strong theoretical supports to build a low-consumption, high-efficiency, sustainable development mode and promote technical innovation in the future.
中文关键词	绿洲沉积 ; 沉积模式 ; 环境变化
英文关键词	oasis sedimentation sedimentary model environmental change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:1880612
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206125
作者单位	中国科学院新疆生态与地理所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	穆桂金,陈冬梅. 绿洲沉积特征及沉积模式[J]. 中国科学院新疆生态与地理研究所,2005,28(1):1-5.
APA	穆桂金,&陈冬梅.(2005).绿洲沉积特征及沉积模式.干旱区地理,28(1),1-5.
MLA	穆桂金,et al."绿洲沉积特征及沉积模式".干旱区地理 28.1(2005):1-5.