1. Associate Professor and Senior Researcher, College of Landscape Architecture and Life Science, Chongqing Univ. of Arts and Sciences, No. 319 Honghe Rd., Yongchuan District, Chongqing 402168, China.
2. Junior Researcher, College of Resources and Environment, Northeast Agricultural Univ., No. 600 Changjiang Rd., Xiangfang District, Harbin 150030, China.
3. Professor and Senior Researcher, College of Resources and Environment, Northeast Agricultural Univ., No. 600 Changjiang Rd., Xiangfang District, Harbin 150030, China (corresponding author).