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刘发林,曾素平.火干扰对森林土壤斥水性的影响研究进展.生态学报,2019,(5).http://dx.doi.org/10.5846/stxb201803300664  
火干扰对森林土壤斥水性的影响研究进展
Progress of effects on forest soil water repellency by fire disturbance
投稿时间:2018-03-30  修订日期:2018-09-30
DOI: 10.5846/stxb201803300664
关键词土壤斥水性  火干扰  地表径流  土壤侵蚀
Key WordsSoil water repellency  Fire disturbance  Runoff  Soil erosion
基金项目国家自然科学基金项目(31470659); 湖南省重点研发计划项(2016SK2025); 森林火灾扑救技术示范性科普活动与培训 (2018ZK4041)
作者单位E-mail
刘发林 中南林业科技大学 liufl680@126.com 
曾素平 中南林业科技大学  
摘要点击次数 120
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摘要:
火干扰影响森林土壤的物理、化学、矿物和生物等性质,其影响归因于火强度,包括最高温度和火灾持续时间。土壤斥水性是指水分不能或很难湿润土壤颗粒表面的现象,很多植被类型及气候带森林存在土壤斥水性,特别是火烧迹地。因火干扰增加地表径流和土壤侵蚀,近年来火干扰对土壤斥水性的研究越来越受学者的关注。许多研究集中在野外森林火灾和计划烧除的影响,发现土壤斥水性是火干扰后降低渗透率的主要原因。本文综述火干扰对土壤斥水性的影响,主要内容包括土壤斥水性的起源、发生及测定方法,火干扰前后土壤斥水性动态变化及其对水文效应和侵蚀的影响,期使学者全面认识该领域的研究前沿。森林火灾后火烧迹地地表径流和土壤侵蚀显著增加,定量预测火灾后土壤斥水性对径流与侵蚀的影响比较困难,因此,基于不同尺度和自然降雨的火灾后斥水性对地表径流和土壤侵蚀的实验及长期定位观测是今后的研究方向与重点。
Abstract:
Many physical, chemical, mineralogical, and biological soil properties can be affected by fire disturbance. The effects are chiefly a result of burn severity, which consists of peak temperatures and duration of the fire. Soil water repellency(SWR) is a phenomenon that the surface of soil particles can not or hard to be moistened by water. SWR refers to the inability of water to wet or infiltrate a dry soil, and this phenomenon has been documented in a wide range of vegetation types and climates, and especially in soil after wildfire. SWR is of considerable interest to soil scientists and land managers because of its implications for increasing runoff and erosion. Much of the research on SWR has focused on the effects of wild and prescribed fires, as numerous studies have suggested that SWR is the primary cause of reduced infiltration rates after burning. In order to fully understand the frontier of research in the field, this paper summarized the effects of fire disturbance on SWR. The main contents include the origin, the occurrence, the determination of SWR, the dynamic change of SWR before and after the fire and its effect on hydrological and erosion. Runoff and soil erosion increased significantly after forest fire, but it is difficult to predict quantitatively the influence of SWR on runoff and erosion after fire, therefore, SWR of different scales and natural rainfall after fire experiments on surface runoff and soil erosion and long-term observation are the research direction and emphasis in the future.
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