VNU Journal of Science Earth and Environmental Sciences, Vol 36, No 3 (2020) 1 11 1 Original Article Intergrating the Diversity Characteristics to Design a Quantitative Landscape Regionalization Framework Case Study of Van Chan District, Yen Bai Province Pham Minh Tam1,, Pham Hoang Hai2, Nguyen Cao Huan1, Pham Thu Thuy3 1VNU University of Science, Hanoi, 34 Nguyen Trai, Hanoi, Vietnam 2Institute of Geography, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Hanoi, Vietnam 3[.]