干旱区生态环境知识资源中心(Arid): 科尔沁沙地范围确定及风沙地貌特征研究

Arid

	科尔沁沙地范围确定及风沙地貌特征研究
其他题名	Boundary delimitation and characteristics of aeolian sand landform in Horqin sandy land
	杜会石 1; 哈斯额尔敦 2; 王宗明 1
来源期刊	北京师范大学学报. 自然科学版
ISSN	0476-0301
出版年	2017
卷号	53 期号:1 页码:33-37
中文摘要	科尔沁沙地范围的界定,目前尚未达成共识.本文利用Landsat8 OLI影像和ASTER GDEM数据,采用水系流域分割方法,划定科尔沁沙地的自然地理范围.并提取了各类沙丘分布信息,对沙丘格局特征和形态示量做了定量研究.结果表明,科尔沁沙地面积64 387.22 ${ ext{k}}{{ ext{m}}^2}$,风沙覆盖面积37 381.00 ${ ext{k}}{{ ext{m}}^2}$.风沙地貌分布及格局具有一定规律性,沙丘类型自西向东、自南向北趋于简单,并主要分布在西辽河干、支流沿岸的冲积平原上,不同河谷形态、走向其两侧沙丘发育呈现差异性,河流对沙地发育演化及维持其平衡态具有重要意义.
英文摘要	The scope of Horqin sandy land has not been defined clearly. To solve this issue, segmentation derived from water basins was used to delimit natural geographical scope of Horqin sandy land based on Landsat 8 OLI images and ASTER GDEM data. Further, after extracting distribution information of various sand dunes, quantitative analysis was carried out on dune pattern and morphology. The area of Horqin sandy land was found to be 64 387.22 ${ ext{k}}{{ ext{m}}^2}$, aeolian coverage was 37 381.00 ${ ext{k}}{{ ext{m}}^2}$. Some regularity in sand landform distribution and pattern was apparent. From west to east, from south to north, the main dune types distributed in the field of West Liaohe River and the alluvial plains tributaries tended to become simple and single. Distinct diversity was also found through different valley forms, trend and dune development on both sides of the river. In conclusion, river not only plays a crucial role in sand evolution and development, but also in maintaining its equilibrium condition. The study provides some scientific evidence for desertification control and comprehensive research in the area of Horqin sandy land.
中文关键词	科尔沁沙地 ; 风沙地貌 ; 边界划定 ; 3S技术
英文关键词	Horqin sandy land aeolian sand landform boundary delimitation 3S technology
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5937714
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235609
作者单位	1.中国科学院东北地理与农业生态研究所, 长春, 吉林 130102, 中国; 2.北京师范大学资源学院, 北京 100875, 中国
推荐引用方式 GB/T 7714	杜会石,哈斯额尔敦,王宗明. 科尔沁沙地范围确定及风沙地貌特征研究[J]. 北京师范大学,2017,53(1):33-37.
APA	杜会石,哈斯额尔敦,&王宗明.(2017).科尔沁沙地范围确定及风沙地貌特征研究.北京师范大学学报. 自然科学版,53(1),33-37.
MLA	杜会石,et al."科尔沁沙地范围确定及风沙地貌特征研究".北京师范大学学报. 自然科学版 53.1(2017):33-37.