(Photo: Xinhua)

BEIJING, Nov. 1 (Xinhua) -- China unveiled a guideline on Friday to promote the coordination and implementation of setting limits in its territorial spatial planning.

The document, jointly issued by the General Office of the Communist Party of China Central Committee and the General Office of the State Council, stressed the importance of ecological protection, farmland protection and economical use of land.

Efforts will be made to further set red lines for ecological protection based on ecological functions. Priority will be given to regions with important functions such as biodiversity, soil and water conservation and regions with extreme ecological vulnerability, the document said.

To ensure national food safety and the supply of important farm produce, permanent basic farmland will be defined and given permanent special protection, the guideline said.

The guideline also required setting boundaries for urban development based on green development requirements.