Relationships between the Visual Quality and Color Patterns: Study in Peri-Urban Forests Dominated by <i>Cotinus coggygria</i> var. <i>cinerea</i> Engl. in Autumn in Beijing, China oleh Yujuan Cao, Yanming Li, Xinyu Li, Xing Wang, Ziyun Dai, Minjie Duan, Rui Xu, Songting Zhao, Xiuping Liu, Jiale Li, Junfei Xie