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本研究对小兴安岭地区火烧迹地的森林植被更新情况进行调查研究。研究结果表明:(1)针叶林过火迹地上,落叶松幼苗较少,阔叶树萌条更新强度同火烧程度成正比。(2)重度火烧有利于天然更新,促使白桦、山杨萌生;中度火烧最初形成以杨桦为优势树种的阔叶林,后又逐渐演变为针阔混交林;轻度火烧有利于针叶林更新。(3)火烧后不同林型下灌木草本植被种类变化不同。
This study investigates the renewal of the forest vegetation in the burned areas of the Little Xing’an Mountains. The results showed that: (1) There was less larch seedlings on coniferous forest, and the renewal intensity of broadleaf tree sprout was proportional to the degree of fire. (2) Severe fire is conducive to natural regeneration, prompting the birch and mountain poplar; moderate fire first formed a birch forest with birch as the dominant tree species, and gradually evolved into a coniferous and broad-leaved mixed forest; mild fire is conducive to the needle I’m updating. (3) The species of shrubs under different forest types after fire were different.