- 1State Key Laboratory of Efficient Utilization of Agricultural Water Resources, China Agricultural University, Beijing 100083, China.
- 2National Field Scientific Observation and Research Station on Efficient Water Use of Oasis Agriculture in Wuwei of Gansu Province, Wuwei 733000, China.
- 3Center for Agricultural Water Research in China, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
Network resilience refers to a system's ability to adapt its functions and maintain the continuity of essential operations in the face of external environmental changes or internal disruptions. The resilience of the global food trade network is increasing challenged by structural disturbances such as dynamic shifts in internal and external environments, making it a topic of significant interest. Extreme climate events-such as floods, droughts, is a key concern for food production and food trade network. However, little in-depth theoretical and empirical research has been conducted in relation to the link between exposure to extreme climate and the underlying mechanisms that explicate this relationship. This study introduced the static and dynamic food trade network resilience assessment method and applied linear mixed effect model to estimate the effect of extreme climate impact on the food trade network resilience. The results shown that the extreme climate events reduced the maize, rice and soybeans export value and then decreased the network resilience. It also demonstrated that intensity of export competition plays a critical role in shaping the resilience of the network. Specifically, the findings shown that the network's resilience declines more sharply when nodes with higher weighted degrees are removed sequentially, compared to the removal of nodes with lower weighted degrees. In link disruption scenarios, the removal of links with higher competition intensity causes a steeper decline in resilience than the removal of weaker links. Additionally, in weight modification experiments, networks with a higher proportion of strong competition links exhibit greater stability compared to networks with fewer such links. These results highlight the importance of maintaining a strong level of export competition to sustain the stability of the global trade competition network when facing the disturbance of extreme climate events.
How to cite: Liu, X. and Ren, X.: Extreme climate impact on the food trade network resilience, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-18646, https://doi.org/10.5194/egusphere-egu25-18646, 2025.