Analysis of dynamic change of Hongjiannao Lake based on MNDWI

International Symposium on Earth Observation for One Belt and One Road

地球科学;政治学;社会学;经济学

Yue, Hui^1 ; Liu, Ying^1 ; Wang, Haoren^1 ; Zhang, Wei^1

College of Geomatics, Xi'An University of Science and Technology, Xi'an, Shaanxi

710054, China^1

关键词: Dynamic changes;    Interannual;    LANDSAT;    Modified Normalized Difference Water Index (MNDWI);    Preliminary analysis;    Underground mining;    Water areas;    Waterbodies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/57/1/012005/pdf
DOI  :  10.1088/1755-1315/57/1/012005

来源: IOP

【 摘 要 】

In order to understand recent changes in inter-annual trends in water area of Hongjiannao Lake and to explore influence factors affecting the changes, the Landsat data during the year from 1988 to 2014 was processed by Modified Normalized Difference Water Index (MNDWI) and the water body boundary of Hongjiannao Lake was extracted. Then the water area was calculated in ARCGIS, and also the variation was analysed. The results show that the water area of Hongjiannao Lake is overall decreasing from 1988 to 2014. The possible causes of its shrinking by preliminary analysis are mainly continuous underground mining, climate drought, upstream reservoirs and so on.