北京师范大学学报（自然科学版）2017，Vol.53Issue(1)：33-37,5.DOI:10.16360/j.cnki.jbnuns.2017.01.007
科尔沁沙地范围确定及风沙地貌特征研究
Boundary delimitation and characteristics of aeolian sand landform in Horqin sandy land
摘要
Abstract
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 8OLI 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 km2,aeolian coverage was 37 381.00 km2.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.关键词
科尔沁沙地/风沙地貌/边界划定/3S技术Key words
Horqin sandy land/aeolian sand landform/boundary delimitation/3S technology分类
天文与地球科学引用本文复制引用
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].北京师范大学学报（自然科学版）,2017,53(1):33-37,5.基金项目
国家自然科学基金资助项目(41401002) （41401002）
