BEIJING, April 6 (Xinhua) -- China will introduce resource tax at a "proper" time to promote energy saving and environmental protection, the Ministry of Finance said Tuesday in a statement on its Website.

The statement provide little details about the move which is part of the ministry's tasks for 2010 listed in the lengthy statement.

The government would stick to the proactive fiscal policy this year, the statement said, adding the ministry would expand investment in agriculture, education, science, medical care, social security, affordable housing, energy conservation and emission reduction.

The ministry said it would improve the property tax system, without details. It would also step up efforts to revamp income distribution, aiming at narrowing the yawning wealth gap.