随着现代社会的不断发展和人民生活水平的提高，人们对健康的生活方式越来越重视。大自然的环境具有改善情绪、心理健康和降低疾病风险等作用，接触大自然能够增加自然联结，有利于身心健康，而健康饮食行为作为是一种基本的健康表现形式，过往研究很少关注自然联结如何对健康饮食行为产生促进作用。本研究从自然联结的角度出发，帮助人们增加健康饮食行为，促使身心健康发展。本文通过两个研究探讨自然联结对健康饮食行为的促进作用，并关注自然联结起作用的内在机制，检验自我控制的中介作用。

研究一采用问卷调查法，考察了自然联结、自我控制和健康饮食行为三者之间的关系，以及自我控制的中介作用。研究一通过在Credamo见数平台的数据集市发放问卷施测，共收集200份有效样本。结果表明，自然联结、自我控制、健康饮食行为两两之间存在正相关的关系，自然联结与不健康饮食行为存在负相关的关系，自我控制与不健康饮食行为存在负相关的关系，且自我控制在自然联结和健康饮食行为、不健康饮食行为之间起到中介作用。

研究二采用实验室实验法，操纵自然联结水平，探讨自然联结对健康饮食行为的影响，以及自我控制的中介作用。采用单因素两水平（自然联结启动组/城市环境对照组）被试间设计，在Credamo见数平台的数据集市招募192名被试，其中自然联结启动组100人，城市环境对照组92人，采用视频法操纵自然联结，并测量自我控制，以及通过模拟虚拟菜单点菜任务测量健康饮食行为。结果表明，自然联结显著正向预测健康饮食行为，且自我控制在其中起到中介作用，即自然联结通过提高自我控制，进而增加健康饮食行为。

通过两个研究，本研究发现自然联结对健康饮食行为起正向影响作用，自我控制在自然联结和健康饮食行为之间起中介作用，即自然联结通过增强自我控制，进一步增加健康饮食行为。这一结果为理解自然联结与健康饮食行为之间的关系以及背后的作用机制提供了实证补充，同时对基于自然联结视角干预人们增加健康饮食行为具有实践指导意义。

With the continuous development of modern society and the improvement of people's living standards, there is increasing emphasis on a healthy lifestyle. The natural environment can improve mood, mental health, and reduce the risk of diseases. Contact with nature can enhance nature connectedness, which is beneficial for both physical and mental health. While healthy eating behaviors are a fundamental form of healthy living, previous research has rarely focused on how nature connectedness can promote healthy eating behaviors. This study aims to increase healthy eating behaviors from the perspective of nature connectedness, promoting the development of physical and mental health. Through two studies, this paper explores the role of nature connectedness in promoting healthy eating behaviors and examines the internal mechanisms by focusing on the mediating role of self-control.

Study 1 used a questionnaire survey method to examine the relationships among nature connectedness, self-control, and healthy eating behaviors, as well as the mediating role of self-control. The questionnaire was distributed through the Credamo data marketplace, and 200 valid samples were collected. The results indicated that there were positive correlations between nature connectedness, self-control, and healthy eating behaviors. Additionally, nature connectedness was negatively correlated with unhealthy eating behaviors, and self-control was negatively correlated with unhealthy eating behaviors. Self-control also mediated the relationships between nature connectedness and both healthy and unhealthy eating behaviors.

Study 2 employed a laboratory experiment method to manipulate the level of nature connectedness, exploring its impact on healthy eating behavior and the mediating role of self-control. A single-factor, two-level (nature connectedness activation group/urban environment control group) between-subjects design was used. A total of 192 participants were recruited from the data marketplace on the Credamo platform, with 100 in the nature connectedness activation group and 92 in the urban environment control group. Nature connectedness was manipulated using a video method, and self-control was measured, along with healthy eating behavior through a simulated virtual menu ordering task. The results showed that nature connectedness significantly and positively predicted healthy eating behavior, with self-control playing a mediating role. In other words, nature connectedness increased healthy eating behavior by enhancing self-control.

Through two studies, this research found that a connection with nature has a positive impact on healthy eating behaviors. Self-control acts as a mediator between connection with nature and healthy eating behaviors, meaning that connection with nature enhances self-control, which in turn increases healthy eating behaviors. This result provides empirical evidence to understand the relationship between connection with nature and healthy eating behaviors and the underlying mechanisms. It also offers practical guidance for interventions aimed at increasing healthy eating behaviors from the perspective of connection with nature.