The Palace Museum in Beijing may have wider jurisdiction over its neighboring areas in the future, according to a draft blueprint released on Tuesday.

The 106-hectare museum, also known as the Forbidden City, China's royal palace from 1420 to 1911, was listed as a UNESCO World Cultural Heritage site in 1987.

However, its auxiliary buildings, neighboring waters and green spaces are administered by many other institutions, making it difficult to coordinate efforts, according to Chen Tongbin, a historical architecture expert with the China Architecture Design & Research Group which drafted the blueprint.

The draft is the first long-term protection blueprint overseeing the museum's work in multiple fields, ranging from the preservation of ancient buildings to the design of different functional areas to regulation of tourism development. It is waiting for approval by the State Council. If passed, it will take effect before the end of this year.

"It is still undecided whether to propose establishing a joint commission led by the Palace Museum to co-administer the area or transfer the administration of the whole area to the museum," Chen said. "But one thing is certain: The situation where the Palace Museum only has administration of the area within its walls must be changed."

For example, rental boats in the river along the southern wall of the Forbidden City are often criticized for being at odds with the surrounding historical atmosphere. The boats may be banned if the draft is approved.

Chen expects the document to be the foundation of a national-level regulation on protection of the Palace Museum to be drawn up later.

"Beijing's Palace Museum is the world's biggest museum housed in a former royal palace, but the area of its cultural heritage protection zone is only of medium size compared with others," Chen said.

About 15 million people visit the museum every year, topping all the museums in the world. The museum introduced a policy earlier this month to cap the daily visitor number at 80,000.

The draft blueprint proposes dividing the museum into several sections for management. Each section will set an independent limit on the number of daily visitors to better protect the world heritage site.

Shan Jixiang, director of the museum, promised to look at other ways to offer tourists a better visiting experience. He predicted that 82 percent of the museum's area will be opened to the public by 2025, up from the current 65 percent.

He said all administrative offices are planning to move out of the ancient palace buildings, and buildings constructed in recent decades among the ancient architecture will be demolished by 2025.