干旱区生态环境知识资源中心(Arid): Change detection, risk assessment and mass balance of mobile dune fields near Dunhuang Oasis with optical imagery and global terrain datasets

Arid

DOI	10.1080/17538947.2020.1767222
	Change detection, risk assessment and mass balance of mobile dune fields near Dunhuang Oasis with optical imagery and global terrain datasets
	Ding, Chao 1; Feng, Guangcai 2; Liao, Mingsheng 1; Zhang, Lu 1
通讯作者	Liao, Mingsheng
来源期刊	INTERNATIONAL JOURNAL OF DIGITAL EARTH
ISSN	1753-8947
EISSN	1753-8955
出版年	2020
卷号	13 期号:12 页码:1604-1623
英文摘要	Quantifying the kinematic evolution patterns of dune migration plays a major role in resisting the sand-dust disasters and evaluating the desertification process. With the increment of optical observations, measuring the dune migration with dense spatial and temporal density has become possible. In this study, with the open-accessible Landsat-8 (L8)/Sentinel-2 (S2) imagery and global terrain datasets, we designed a complete workflow of inverting the dune displacement time series and velocity, identifying the potential encroachment risk, and evaluating the sediment balance of mobilized dune fields near Dunhuang Oasis. After the performance of time-series inversion, the standard deviation (STD) of measurements in stable area of raw correlation results was improved by above 40%. The displacement time series and velocity revealed out the spatial heterogeneity and seasonal/inter-annual dynamic evolution of dune migration. Furthermore, dune encroachment risk in the immediate vicinity of local landscapes was evaluated to highlight the unstable dune fields, and the workability of existent sand-control facilities. Additionally, the mass budget of around -0.001 +/- 0.025 m/yr shows the stable sediment transport in Mingsha mountain. This study case can be exemplified to lead the risk monitoring and sustainable conservation of Dunhuang region and other places controlled by similar climatic conditions.
英文关键词	Change detection risk assessment mass balance dune migration Dunhuang oasis
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000536117400001
WOS关键词	CULTURAL-HERITAGE ; MOGAO GROTTOES ; SAND MOVEMENT ; SIMULATION ; TRANSVERSE ; SRTM ; GOBI ; AREA ; FLOW
WOS类目	Geography, Physical ; Remote Sensing
WOS研究方向	Physical Geography ; Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319143
作者单位	1.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, 129 Luoyu Rd, Wuhan 430079, Peoples R China; 2.Cent South Univ, Sch Geosci & Infophys, Changsha, Peoples R China
推荐引用方式 GB/T 7714	Ding, Chao,Feng, Guangcai,Liao, Mingsheng,et al. Change detection, risk assessment and mass balance of mobile dune fields near Dunhuang Oasis with optical imagery and global terrain datasets[J],2020,13(12):1604-1623.
APA	Ding, Chao,Feng, Guangcai,Liao, Mingsheng,&Zhang, Lu.(2020).Change detection, risk assessment and mass balance of mobile dune fields near Dunhuang Oasis with optical imagery and global terrain datasets.INTERNATIONAL JOURNAL OF DIGITAL EARTH,13(12),1604-1623.
MLA	Ding, Chao,et al."Change detection, risk assessment and mass balance of mobile dune fields near Dunhuang Oasis with optical imagery and global terrain datasets".INTERNATIONAL JOURNAL OF DIGITAL EARTH 13.12(2020):1604-1623.