[1] Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, College of Geography and Environmental Science, Henan University, Kaifeng,475004, China
[2] School of Geographical Sciences, Shanxi Normal University, Taiyuan,030000, China
[3] Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing,100101, China