干旱区研究2017，Vol.34Issue(3)：701-706,6.DOI:10.13866/j.azr.2017.03.29
敦煌月牙泉景区沙丘表面沙物质的粒度特征
Grain Size Characters of Dune Surface Sediment in the Crescent Spring Scenic Spot， Dunhuang
摘要
Abstract
In this study, the grain size characters of pyramid dune at the north and linear dune at the south of Crescent Spring and their environmental significance were analyzed based on the monitoring data of wind regime,wind erosion and deposition.The results are as follows:① The wind erosion occurred mainly on the SW slope of linear dune, and wind deposition occurred mainly on the NE slope, which caused the sand sediment of surface of SW slope to be fine and sorted well;② The SW slope of pyramid dune at the north of the Crescent Spring was mainly erosional, and sand sediment was the coarsest and sorted poorly.NW slope was also erosional, while the bottom of slope was depositional due to the proximity of windbreak in oasis;③ The data of wind regime, grain size and variation of deposition and erosion showed that sand deposition on the NW slope at the south of the Crescent Spring was the most harmful.The continuous sand accumulation in the middle part of pyramid dune on the SW slope at the north of the Crescent Spring would pose a potential threat to the Crescent Spring.Therefore, it is necessary to strengthen the environmental monitoring and management of scenic spots so as to protect the natural wonders of Crescent Spring,关键词
金字塔沙丘/沙物质/风况/蚀积/粒度/月牙泉/敦煌Key words
pyramid dune/sand sediment/wind regime/erosion and deposition/grain size/Crescent Spring/Dunhuang引用本文复制引用
庞营军,屈建军,牛清河,张克存,谢胜波,安志山..敦煌月牙泉景区沙丘表面沙物质的粒度特征[J].干旱区研究,2017,34(3):701-706,6.基金项目
国家科技支撑计划项目(2012BAC08B07) （2012BAC08B07）
国家自然科学基金项目(41271023,41371027)资助 （41271023,41371027）
