Members of an exhibitor demostrate a drone at the China Hi-tech Fair in Shenzhen, South China's Guangdong province, Nov 18, 2015. Drones displayed by various manufacturers attracted many visitors at this year's hi-tech fair. [Photo/Xinhua]

Drone owners and fans in China can expect a tough time after the People's Liberation Army Air Force has pledged to tighten monitoring of such aircraft.

Colonel Shen Jinke, spokesman for the PLA Air Force, said that to safeguard airspace security, the Air Force, in cooperation with civil aviation and public security departments, will enhance the management and control of small unmanned aerial vehicles that fly at low altitude and slow speed.

In recent years, flights of small drones have become rampant across the country despite the government's efforts to handle the problem, Shen said. Some of the flights have threatened the safety of military and civilian aircraft, he added.

Shen's remarks followed a number of unapproved flights by unmanned aircraft that posed potential threats to operations of military aircraft.

On Nov 17, a PLA Air Force helicopter unit in Hebei province found during a training session that a drone was illegally flying near the unit's airport. Helicopters were sent to force the aircraft to land, and soldiers were sent to assist the police in nabbing the drone's ground controllers.

An investigation found that the drone was owned by an aviation technology company in Beijing and that the flight was not reported to or approved by any civil aviation or military authority.

A video clip that was shot by a drone and recently circulated among video-sharing websites also attracted the military's attention because it shows a fighter jet flying past the drone as the jet was landing.

PLA Daily, the military's newspaper, criticized the drone's operators for flying the aircraft near the flight routes of military planes, saying that such a move tremendously compromises the safety of military aircraft and people on the ground along the routes.

In recent years, unapproved drone flights have made headlines, including one that forced an airport in Zhejiang province to close for nearly an hour, delaying 18 flights, and one that affected the landing of nearly 10 flights at Beijing Capital International Airport.

Song Xinzhi, an aviation expert who was in the PLA Air Force for more than three decades, said drone owners and operators should not try their luck if they want to fly drones near military airports.