More biological measures will be taken to protect the country's forests from attack by alien invasive species, a senior forestry official said yesterday.

Zhu Lieke, deputy director of the State Forestry Administration (SFA), was speaking at a three-day international conference on the subject that opened on Friday in Beijing.

Biological control is recognized internationally as a good way to deal with pernicious pests and plants, as it employs ecological tactics such as the use of natural enemies and does not pollute the environment.