Through an empirical analysis of the agricultural logistics model and agricultural products quality control system in Pinggu district of Beijing, a model was st
In terms of human behavior,company and government policy,it is proposed that the ecological behavior of human being is the basis of influence on the ecological
Tongle Village in Weixi County of Yunnan Province,a typical Lisu village in Lancang River basin,is located at the national protection zone of traditional cultur