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Identification and temporally-spatial quantification of geomorphic relevant changes by construction projects in loess landscapes:case study Lanzhou City,NW China

引用

Big Earth Data 2019年第4期3卷 395-410页

作者： Michael Fuchs Jewgenij Torizin Lichao Wang Bin Tong Dirk Balzer Liang Chen Dirk Kuhn Ang Li Liqin Wan Federal Institute for Geosciences and Natural Resources(BGR) HannoverGermany China Institute of Geo-environment Monitoring BeijingP.R.China

Sustainable development of urban areas demands,among others,a holistic approach for identification and monitoring of environmental changes caused by human *** this study,the human-made impact on the geo-environment is studied through the application of the change detection study based on Principal Component Analysis on Landsat imageries and comparison of the digital elevation models taken at different *** analysis is set up to identify and quantify the anthropogenic geomorphological changes in the loess landscape in Lanzhou city,Northwest *** 2002 Lanzhou has been undergoing a rapid economic development associated with construction *** to limited flat building ground in the narrowed Yellow River Valley and subsequent expansion into the surrounding loess mountains,massive earthworks are conducted for reclamation of the suitable building *** results of the change detection analysis show that approximately 10%of the semi-natural study area corresponding to 35 km2 has been reshaped by leveling and terracing since *** particular,the geomorphology was significantly changed in these and adjacent *** the single developing area Taipingyang,a moving volume of up to 57 million m3 was roughly estimated.

关键词： Change detection principal component analysis Chinese loess plateau economic development zone

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