1. PhD candidate, College of Landscape Architecture, Northeast Forestry University, Harbin, China; Faculty of Engineering and Architecture, Ibb University, Ibb, Yemen
2. Associate Professor, College of Landscape Architecture, Northeast Forestry University, Harbin, China (corresponding author: )
3. Master student, Chongqing University, School of Architecture and Urban Planning, Chongqing, China
4. Master student, College of Landscape Architecture, Beijing Forestry University, Beijing, China
5. PhD candidate, Faculty of Engineering and Architecture, Ibb University, Ibb, Yemen
6. PhD candidate, College of Landscape Architecture, Northeast Forestry University, Harbin, China