北京林业大学学报2019，Vol.41Issue(2)：12-18,7.DOI:10.13332/j.1000--1522.20180129
试验林火干扰下兴安落叶松林土壤有效磷的时空变化
Temporal and spatial change patterns on soil available phosphorus under an experimental forest fire in Larix gmelinii forests
摘要
Abstract
[Objective]The temporal and spatial change patterns and its formation mechanism on soil available phosphorus were analyzed in the Larix gmelinii forests, which was disturbed by 3 kinds of intensity fire, to understand soil available phosphorus habitat and to provide reference to mineral nutrition regulation in the early vegetation restoration after forest fire. [Method]Taking soil available phosphorus as research object, latticed co-coupled sampling method, soil-drilling method, and H2 SO4-HCl extraction method were conducted to investigate temporal and spatial variations of soil available phosphorus under an autumn experimental forest fire in the boreal Larix gmelinii forests of Great Xing''an Mountain of northeastern China. [Result]After forest fire disturbance: (1) soil available phosphorus of mild burned area was not changed immediately and then increased, that of moderate burned area or severe burned area increased immediately and then increased continually; (2) significant correlation of spatial pattern was between soil available phosphorus and fire intensity at each post-fire time node, correlation of spatial pattern between soil available phosphorus change and fire intensity appeared immediately after the fire, but that disappeared after snowmelt season and rainy season/growing season. [Conclusion]In the early years of post-fire forest transformation or ecological restoration, increased soil available phosphorus is advantageous to the forest vegetation restoration of Larix gmelinii forests in Great Xing''an Mountain of northeastern China.关键词
兴安落叶松林/试验林火/土壤有效磷/时空变化Key words
Larix gmelinii forest/experimental forest fire/soil available phosphorus/temporal and spatial variation分类
农业科技引用本文复制引用
张韫,于悦,崔晓阳..试验林火干扰下兴安落叶松林土壤有效磷的时空变化[J].北京林业大学学报,2019,41(2):12-18,7.基金项目
国家自然科学基金项目(31570597) （31570597）
国家重点研发计划(2016YFA0600803) （2016YFA0600803）
