Extrinsic Motivation vs. Intrinsic Motivation: Key Factors Influencing Farmers' Land Quality Protection Behavior in China

The crowding effect of individual behavior motivation is a focal point in various disciplines, such as economics and social psychology. Understanding the motivation crowding effect in the context of pro-environmental behavior of farmers is crucial for formulating agricultural environmental policies. However, there is limited knowledge about the motivation crowding effect on farmers' land quality protection behavior, especially in developing countries. This study employs stratified regression models, propensity score matching models, seemingly unrelated regression models, and simple slope analysis methods to analyze the impact of extrinsic motivations (external incentives such as increasing farming income and production yield) and intrinsic motivations (internal drives such as personal satisfaction and responsibility) on farmers' land quality protection behavior, as well as the motivation crowding effect between extrinsic and intrinsic motivations. The analysis is based on survey data from 1064 smallholder farmers in five provinces in China: Zhejiang, Jiangsu, Henan, Shaanxi, and Gansu. The results indicate that both extrinsic and intrinsic motivations have a positive impact on farmers' land quality protection behavior. Notably, extrinsic motivation exhibits a crowding-out effect on intrinsic motivation, suggesting a motivation crowding effect. While promoting farmers' land quality protection behavior through economic incentives is a feasible short-term solution, it may not effectively foster the long-term formation of such behaviors. Given the current context of severe land pollution, alleviating this issue through economic incentives represents a short-term policy approach. Thus, transitioning from short-term to long-term solutions by enhancing farmers' intrinsic motivation to promote farmers' land quality protection behavior is essential for the government to consider in future land protection policy formulation.