Urban ecological regulation based on ecological carrying capacity A brief discussion on ecological regulation of forest pests Eco-geographic processes in the evolution of human settlements system on the metropolis fringe: a case study of Guangzhou Using genetic diversity of wheat varieties for ecological regulation on Sitobion avenae Spatial approaches to ecological regulation in urban areas: A case in Shenzhen Ecological feedback significance of polyphenols in organic layer of forest soil Ecological regulation services of Hainan Island ecosystem and their valuation