干旱区生态环境知识资源中心(Arid): 吉尔嘎郎图草原栗钙土沉积微相研究

Arid

	吉尔嘎郎图草原栗钙土沉积微相研究
其他题名	Sedimentary Microfacies of Chestnut Soil in the Jiergalangtu Grassland
	吴昕 1; 张继吟 2; 李江风 2
来源期刊	地质科技情报
ISSN	1000-7849
出版年	2018
卷号	37 期号:3 页码:107-115
中文摘要	锡林郭勒大草原的迅速沙化,已经成为我国严重的环境问题。查清其第四系沙源的沉积相和微相及其空间特征,有助于寻找标本兼治的途径与方法。以锡林河中游的吉尔嘎郎图平地小草原为例,首先,对典型剖面进行了分层精准观测和采样测试,把宏观沉积学研究与微观粒度参数分析相结合,在第四系栗钙土中识别出河床、堤岸和洪泛3个亚相及其所属的6个微相,建立了6种微相的粒度分布模型;然后,基于图解法的粒度参数计算和有约束点的动态聚类分析法,实现了面上大量栗钙土样品的沉积微相归类,从而快速有效地查明了沙化沙源为河流侵蚀成因,沙源来自下伏白垩系顶部的古河流-三角洲砂体。
英文摘要	The rapid desertification of the Xilinguole grassland has become a serious environmental problem in China.Finding out the sedimentary facies and microfacies of the Quaternary sand source and their spatial characteristics can be helpful to find ways to treat both of the symptoms and root causes of desertification. This paper takes the Jiergalangtu grassland in the middle reaches of the Xilin River as an example. Firstly,the paper investigates the typical sections on layer observations and sampled testing,and then analyses the macro sedimentological and micro grain size parameters to identify 3subfacies of the riverbed, levees and floodplain,and their subordinate 6microfacies in the Quaternary chestnut soil,and establishs the particle size distribution models of these 6microfacies.Then,by using the grain size parameter calculation based on graphic method and the dynamic clustering analysis method with constrained points,the paper classifies the sedimentary microfacies of large number of chestnut soil samples,which can quickly and effectively check out the genesis of desertification.
中文关键词	栗钙土 ; 草原沙化的沙源 ; 沉积微相 ; 粒度分析 ; 粒度参数 ; 聚类分析
英文关键词	chestnut soil the sand source of desertification sedimentary microfacies grain size analysis grain size parameter clustering analysis
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:6256027
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237464
作者单位	1.中国地质大学(武汉);;集美大学诚毅学院, ;;, 武汉;;厦门, ;;福建 430074;;361021; 2.中国地质大学(武汉), 武汉, 湖北 430074, 中国
推荐引用方式 GB/T 7714	吴昕,张继吟,李江风. 吉尔嘎郎图草原栗钙土沉积微相研究[J],2018,37(3):107-115.
APA	吴昕,张继吟,&李江风.(2018).吉尔嘎郎图草原栗钙土沉积微相研究.地质科技情报,37(3),107-115.
MLA	吴昕,et al."吉尔嘎郎图草原栗钙土沉积微相研究".地质科技情报 37.3(2018):107-115.