南北差异视角下个体食物浪费行为——基于大学生高校食堂就餐情境的分析

Research on individual food waste behavior from the perspective of North-South differences: Take the dining situation of students in university canteens as an example

饮食习惯一直被认为是造成食物浪费的重要因素。基于对29省29所高校9192份大学生食堂就餐的实地调查问卷,从南北差异视角探讨了个体食物浪费行为的差异特征。研究表明:相对北方籍大学生,南方籍大学生浪费食物的概率更高,南方籍大学生在高校食堂就餐时食物浪费量和浪费率也高于北方籍大学生。通过中介效应模型,证实南北方主流饮食模式是引发浪费差异的关键所在。进一步匹配大学生南北方籍贯和所就读高校的南北区位,并以“南方大学生在南方高校求学”模式为基准,发现“南方大学生到北方高校求学”模式下,个体有更低的食物浪费概率、浪费量和浪费率。但“北方大学生到南方高校求学”模式下,个体没有显示出较低的食物浪费概率、食物浪费量和食物浪费率,从而稳健地证实南北方主流饮食模式是引发浪费差异的关键所在这一结论。

Eating habits has always been considered as an important factor in food waste.This paper takes 29 universities,all in different provincial-level regions,as study cases to explore the factors that affect students'wasting behavior.Based on a questionnaire survey of 9192 college students,this paper focuses on the impact of North-South differences on individual food waste behavior,and attempts to answer:Southerners and Northerners,who are more likely to waste food,who waste more food?The results show that compared with the northern native college students,the probability of food waste in the students of the southern region is higher,and the food waste and food waste rate of the students of the southern origins in the college cafeteria are higher than those of the northern students.In order to verify whether the difference in diet patterns between the"rice"model in the south and the"wheat"model in the north is the main reason for the above phenomenon,this paper confirms that the difference between the north and the south diet patterns is the key reason for the fact that the southerners waste more food than the northerners through the mediation effect model.This paper further matches the individual's North-South origin and the North-South position of the colleges and universities.Based on the mode of"Southern students studying in the South",we found that the"Southern tudents going to school in the North"mode has a lower probability of food waste,waste amount and food waste rate.However,under the"Northern students going to school in the South"mode,individuals did not have a low probability of food waste,the weight of waste and food waste rate.Therefore,this paper confirms that the southerners are more wasteful of food than the northerners.And it is proved that the mainstream diet pattern in the north and the south is the leading driving force to the difference in waste.