Title :
Evolution of the Heihe River Basin oasis in the last 35 years
Author :
Liao, Jie ; Wang, Tao ; Xue, Xian ; Guo, Jian ; Wen, Xing
Author_Institution :
Key Lab. of Desert & Desertification, Cold & Arid Regions Environ. & Eng. Res. Inst. (CAREERI), Lanzhou, China
Abstract :
Taking the Landsat MSS(1975) TM & ETM+ (1990, 2000, 2005 and 2010) satellite images as the basic data sources, we extract the distributional information of oasis in the Heihe River Basin during 1975-2010. The results shows that: (1) Oasis expands from 1975 to 2010 and the growing rate especially quickly after the year of 2000, and Oasis reaches the top area of 8218.52 km<;sup>;2<;/sup>; in 2010. (2) Oasis is composed by cropland, forest, wet land, cities and settlement place in the study area. The cropland, which occupies about 60% of the oasis, and the cities and settlements expanded gently, and the forest and wet lands are changeful relatively.
Keywords :
rivers; terrain mapping; AD 1975 to 2010; AD 1990; AD 2000; AD 2005; AD 2010; Heihe River Basin Oasis; Landsat ETM+ image; Landsat MSS image; Landsat TM image; cropland; forest; remote sensing; satellite images; wet land; Accuracy; Cities and towns; Earth; Presses; Remote sensing; Rivers; Satellites; Heihe River Basin; Oasis Evolution; Remote-Sensing;
Conference_Titel :
Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9172-8
DOI :
10.1109/RSETE.2011.5965203
