关键词: 水资源使用权确权登记, 取用水管理, 水权制度, 节水技术采纳行为, 三重差分模型

Abstract: Based on the quasi-natural experiment of comprehensive governance pilot of groundwater overdraft carried out in North China and 3 periods of plot-level panel data of 502 potato growers randomly selected in Hebei Province and Inner Mongolia Autonomous Region, the impacts of registration and trade of water use rights and water drawing permission on farmers’ adoption of water-saving technology are examined through difference-in-difference ( DID) and difference-in-difference-in-difference (DDD) approaches. The results indicate that compared with pilot areas with only one policy implemented, pilot areas with both policies implemented simultaneously have a remarkably higher proportion of farmers’ adoption of water-saving irrigation technology. Then the paper conducts an econometric analysis on the causal mechanisms of the pilot policy of groundwater overdraft governance inducing farmers’ water-saving behavior, and the result shows that farmers’ adoption of water-saving technology comes from two channels. On the one hand, the registration and trade of water use rights clarify the property rights of water and bore wells; on the other hand, water drawing permission reduces the construction of irrigation bore wells and exploitation of groundwater. The paper concludes that the market-oriented means and government intervention should be integrated to achieve agricultural water-saving, and it is necessary to limit the number of bore wells strictly and to clarify the ownership of bore wells for a good governance structure with innovated village collective ownership and sharing systems on irrigation bore well management.

Key words: Registration of Water Use Right, Water Drawing Permission, Water Rights System, Adoption of Water-saving Technology, Difference-in-Difference-in-Difference Approach