Abstract: To understand the characteristics of foraging habitat selection of wild boar (Sus scrofa) in Laotudingzi Nature Reserve of Liaoning Province in winter, an investigation was made from November 2009 to March 2010, with 14 ecological factors, including vegetation type, altitude, slope position, and aspect, etc., at each sampling site examined by trace test and principal component analysis. The S. scrofa preferred the gentle sunny slope with more food, low human disturbance, high sheltering, near water source, and foraged at the places with no or very few fallen trees, stumps, and stones. The five most important factors affecting the foraging habitat selection of S. scrofa in winter were human disturbance, water source, food, sheltering, and shrub, and their contribution rates were 19.45%, 14.04%, 13.03%, 12.19%, and 10.37%, respectively.

Key words: Ailao Mountain, Disturbances, Soil inorganic nitrogen, Middle mountain moist evergreen broadleaf forest