EDIT: I missed posts showing there is indeed arresting gear!
A bit of speculation on the Type 076's catapult, as some noticed it doesn't appear to have gear necessary to recover aircraft:
The catapult the Type 076 possesses, coupled with the lack of any arrestor system for recovering the aircraft, perhaps indicates China is serious about amphibious operations and at least at the moment, does not intend to use its amphibious and naval forces as "police patrols" in foreign seas like the US Marines do, as many on this forum and in more Western-leaning circles think they will.
Carrying a drone and being able to launch it would be useful to increase loitering time over a target beach. If the target is Taiwan or Okinawa, or an island in the South China Sea, the drone can cut out the time it would take to cruise to the target beach, but when fuel runs low can simply fly back to the mainland or an SCS outpost. Increased loiter time would be beneficial in a landing operation. Unlike during World War II, amphibious assault ships and their landing craft are large and expensive to produce. Losing an entire Type 075 or 076, or 3-4 LCACs, would be very different from losing an LST or Higgins Boat. Especially in observation of land-based threats, for example, hidden artillery being used once the troops begin to land (the Japanese used this tactic very effectively at Iwo Jima) increased loiter time could prove valuable. Realistically an initial landing operation will seek to either capture a proper port or secure a beach with the capacity for an artificial dock, and thus this feature of the Type 076 would only need to be used once (further troops and supplies can be, and will be, transported by China's vast merchant marine).
In the future, once reunification is achieved (either peacefully or armed), perhaps we might see the Type 076 upgraded to allow it to carry out fixed wing operations away from Chinese land bases. I myself am skeptical they will ever do this (because I don't think China intends to become a global policeman), but we'll see.