Composition and distribution of vegetation in cold temperate region of northeastern part of China

Abstract

Cold-temperate region of China is an independent and the most northern one of the 8 vegetation regions of China. The specific composition of the vegetation in this region, besides the polytopic species, East-Siberia floral element is dominant (51.5%), but mixed with Mandshurica (38.7%) and Mongolia (2.3%) in horizontal vegetation zone. The floral elements vary greatly with altitude, in higher and the highest parts, they are mixed with Kantcaja-Erhock and Arctic alpine floral elements. The vertical distribution include 3 zones: subalpine dwarf forest zone, mountainous coniferous wood land zone and mountainous coniferous forest zone, and the last one include 3 subzones.