摘要
火烧对生态系统的影响是复杂的,范围也很广,从地上部分的乔、灌、草的更新到地下部分土壤的理化性质,都受其影响。火烧对植被更新的影响或有利或有害,这主要取决于火烧强度。本文重点研究了火烧对树木和植被更新的影响。结果表明:不同火烧强度对不同树种的更新影响有显著差异。高强度火烧有利于对白桦和山杨的更新,中强度火烧次之,轻强度火烧最差。
The effects of fire on ecosystems are complex and also are very wide, from the tree, shrub, herb of renew of the aboveground to the physical and chemical property of underground parts of soils, is all influenced by it. The effect of fire on vegetation regeneration is either beneficial or deleterious, which mainly depends on fire intensity. The paper mainly focused on the effects of fires on the regeneration of trees and vegetation. The effects of forest fire on the regeneration of different tree significantly varied depending on the fire intensity. High intensity fire is beneficial to the Betula platyphylla and Populus davidiana regeneration, the effect of middle fire intensity is not so good and the low fire intensity＇ s effect is the worst.
出处
《林业科技情报》
2014年第2期30-31,共2页
Forestry Science and Technology Information
关键词
火烧强度
白桦
山杨
更新
fire intensity
Betula platyphylla
Populus davidiana
vegetation
