I. Introduction  
A. Background and Motivation  
B. Overview of Related Surveys and Our Contributions  
C. Organization of This Survey  

II. Architecture and Evolution of JCC-SAGIN  
A. Network Components in JCC-SAGIN  
B. Evolution of Computing Hardware in JCC-SAGIN  
C. Evolution of Network Integration in JCC-SAGIN  

III. Enabling Technologies of JCC-SAGIN  
A. Network Slicing, SDN, and NFV Supported JCC-SAGIN  
B. Energy Harvesting and Wireless Power Transfer Enhanced JCC-SAGIN  
C. Reconfigurable Intelligent Surface-Assisted JCC-SAGIN  
D. Digital Twin-Enabled JCC-SAGIN  
E. Summary Remarks  

IV. Applications in JCC-SAGIN  
A. Water Monitoring  
B. Smart Oilfields  
C. Precision Agriculture  
D. Wildlife Tracking  
E. Disaster Management  
F. Search and Rescue  
G. Summary Remarks  

V. Resource Management Modeling in JCC-SAGIN  
A. Metric for JCC-SAGIN  
B. Offloading Strategy in JCC-SAGIN  
C. Network Modeling and Analysis in JCC-SAGIN  
D. Service Modeling and Analysis in JCC-SAGIN  
E. Summary Remarks  

VI. Resource Management Optimization Methods in JCC-SAGIN  
A. Traditional Optimization Methods in JCC-SAGIN  
B. Learning-Based Intelligent Decision-Making Methods in JCC-SAGIN  
C. Summary Remarks  

VII. Future Research Directions in JCC-SAGIN  
A. Coding-Enhanced Distributed JCC-SAGIN  
B. Multiple Access Technique Design in JCC-SAGIN  
C. Security Countermeasures in JCC-SAGIN  
D. Integration With Maritime Applications  

VIII. Conclusion