(Updates prices) SYDNEY, Dec 12 (Reuters) - Shanghai base metals futures were mostly higher on Tuesday amid signs that supply cuts linked to an environmental crackdown by Beijing will lead to greater import demand. China issued an "action plan" in 2013 to reduce pollution caused by industrial plants, followed by provincial contracts and further policies. This included the so-called 2+26 Plan, which forces aluminium, steel and other industries across 28 cities to curtail production during the winter heating season from mid-November to March. Hebei, China's biggest steel-producing region, was ordered to cut concentrations of hazardous airborne particles known as PM2.5 by 25 percent by the end of this year, as well as cut steel capacity by 60 million tonnes and coal consumption by 40 million tonnes. UBS in a strategy paper on the sector said it sees China's focus on reducing air, land and water pollution to be a major driver for commodities. "In our opinion, the next four weeks are particularly important as December is typically the most polluted month of the year," UBS said.
* The most-traded copper contract on the Shanghai Futures Exchange closed 1 percent higher at 52,070 yuan ($7,864.13) a tonne.
* Three-month copper on the London Metal Exchange closed marginally down at $6,655, after gaining 1.5 percent in the previous session.
* LEAD RISES: ShFE lead ended 3.7 percent higher, while zinc ended 1 percent up.
* CANADIAN BOOST: Canadian developers of cobalt and lithium mines stand to benefit from a round of investments from the makers of electric vehicles and the batteries powering them, a potential game-changer for small miners short on money to develop deposits of these critical battery ingredients. PRICES Three month LME copper Most active ShFE copper Three month LME aluminium Most active ShFE aluminium Three month LME zinc Most active ShFE zinc Three month LME lead Most active ShFE lead Three month LME nickel Most active ShFE nickel Three month LME tin Most active ShFE tin
($1 = 6.6212 Chinese yuan)
(Reporting by James Regan; Editing by Sherry Jacob-Phillips)