兴安落叶松林土壤化学性质对林火强度的响应  

The Responses of the Soil Chemical Properties in Larix Gmelinii to Forest Fire Intensity

作　　者：王鼎[1] 周梅[1,2] 包翔[1,2] 赵鹏武[1,2] 魏江生[1,2] 石亮[1] 

机构地区：[1]内蒙古农业大学,呼和浩特010019 [2]内蒙古赛罕乌拉森林生态系统国家定位研究站,赤峰024000

出　　处：《内蒙古林业调查设计》2016年第2期81-85,90,共6页Inner Mongolia Forestry Investigation and Design

基　　金：内蒙古自治区科技计划项目(20130435;20130438;20101914)资助

摘　　要：文章以内蒙古大兴安岭北部的兴安落叶松林火烧迹地为研究对象,通过野外实地调查与实验室内测定,分析了不同火烧强度林火干扰对林地土壤化学性质的影响。结果显示:火烧迹地的土壤酸性减弱,部分土壤有机质流失。土壤全N、全K含量显著降低,土壤全P含量变化较小。土壤速效N和速效P的含量随着火烧强度的增加都呈显著的上升趋势。火烧10 a后,土壤的一些主要化学指标仍没有恢复到火烧前水平。因此,可以看出火烧干扰对森林土壤的影响是长期的。With field work and laboratory measurement a study was conducted to analyze the influence of forest fire disturbance with different intensity to the chemical property of forest land soil. The Study object is the burned area of Larix Gmelinii in northern Great Khingan of Inner Mongolia. The findings show that the pH value of the experimental slash from logging disturbance decreased as the organic matter substance decreased compared with the undisturbed soil in the same region. The content of total nitrogen, total potassium decreased as fire intensity increased. The content of total phosphorus under fire disturbance impact is small, almost no impact. The content of available nitrogen, available phosphorus increased with the increase of fire intensity. The analysis has demonstrated that after 10 years some of the major chemical indexes of soil have not recovered to the level before the fire, so the fire disturbance has long-term effects on forest soil.

关 键 词：林火 火烧强度 土壤化学性质 兴安落叶松林 

分 类 号：S714.2[农业科学—林学]