[1]陈小伟,刘发林,韩育明.火干扰后枫香次生林不同土层土壤理化性质研究[J].自然灾害学报,2020,29(03):045-53.[doi:10.13577/j.jnd.2020.0306]
 CHEN Xiaowei,LIU Falin,HAN Yuming.Soil physical and chemical properties of different soil layers in Liquidambar formosana secondary forest after fire disturbance[J].,2020,29(03):045-53.[doi:10.13577/j.jnd.2020.0306]
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火干扰后枫香次生林不同土层土壤理化性质研究
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
29
期数:
2020年03期
页码:
045-53
栏目:
出版日期:
2020-06-28

文章信息/Info

Title:
Soil physical and chemical properties of different soil layers in Liquidambar formosana secondary forest after fire disturbance
作者:
陈小伟1 刘发林1 韩育明2
1. 中南林业科技大学 林学院, 湖南 长沙 410004;
2. 攸县林业局, 湖南 攸县 430223
Author(s):
CHEN Xiaowei1 LIU Falin1 HAN Yuming2
1. Faculty of Forestry, Central South University of Forestry and Technology, Changsha 410004, China;
2. Forest Bureau of Youxian City, Youxian 412300, China
关键词:
枫香次生林土壤性质火干扰强度森林类型
Keywords:
Liquidambar formosanasecondary forestsoil propertiesfire disturbanceforest types
分类号:
S714.3S762.8X43
DOI:
10.13577/j.jnd.2020.0306
摘要:
火干扰是影响土壤生态系统结构和功能的重要因素之一。探讨火干扰强度对不同土层土壤理化性质的影响,为火干扰后土壤修复提供理论指导。在湖南省株洲市枫香次生林内进行火干扰试验,设置4种火干扰处理水平,每种处理水平样地重复3次,沿各样地对角线设置3个土壤剖面,每个剖面采集4层土壤样品,测定火干扰处理后不同土层的BD、SWR、SOM、pH、TN、TP和TK等指标。通过统计分析,研究了各土壤性质在不同火干扰间以及同一火干扰下不同土层间的显著性差异。研究表明,枫香次生林4层土壤的BD、SWR、pH均随火干扰强度增加而增加,而SOM随火干扰强度增加而减少;0-5 cm层土壤TN随火干扰强度增加而增加,6-10 cm层土壤TN随火干扰强度增加而减少,火干扰对11-15 cm和16-20 cm层土壤TN、TP、TK几乎没有影响,但0-5 cm、6-10 cm层土壤TP和0-5 cm层土壤TK随火干扰强度增加而下降,6-10 cm层土壤TK随火强度增加而增加。同一土层内,低、中强度火干扰与对照样地BD无显著性差异,而高强度火干扰与对照、低、中强度火干扰样地间BD均存在显著性差异(p<0.05);火干扰后0-5 cm层土壤SWR存在显著性差异,而土层间SWR差异不显著。干扰后4层土壤的SOM、pH均存在显著差异。除6-10 cm层土壤TN外,火干扰后不同土层之间土壤TN、TP、TK无显著性差异,而中、高强度火干扰与对照、低强度火干扰之间存在显著差异。总之,随着土层加深,火干扰对土壤理化性质的影响逐渐减少,表明火干扰对表层土壤理化性质的影响较大,而对下层土壤的影响较小。
Abstract:
Fire disturbance is one of the important factors influencing the ecosystem structure and function of soil. In order to provide theoretical guidance for forest regeneration and management after fire disturbance, this study explored the influence of fire intensity on soil physical and chemical properties in different soil layers. Fire disturbance was conducted in the secondary forest of Liquidambar formosana in Zhuzhou City, Hunan Province. Four levels of fire intensity were set. Site of each level was repeated 3 times, and 3 soil profiles were set along various diagonals. Soil samples of 4 soil layers were collected in each profile. Soil capacity, soil water repellency (SWR), soil organic matter (SOM), pH, Total nitrogen (TN), total phosphorus (TP), and total potassium (TK) of different soil layers after fire were determined. Significant differences of soil properties between different fire intensity and between different soil layers under the same fire intensity were studied by statistical analysis. Studies showed that BD, SWR, and pH of the 4 layers soil in the secondary forest of Liquidambar formosana increased with the increase of fire intensity, while the SOM decreased with the increase of fire intensity, and TN of 0-5 cm layer increased and TN of 6-10 cm layer decreased with the increase of fire intensity. Fire disturbance had little effect on TN, TP, and TK in 11-15 cm and 16-20 cm soil, but TK in 0-5 cm, 6-10 cm, and TP in 0-5 cm decreased with increase of fire intensity, but TK in 6-10 cm increased with the increase of fire intensity. In the same soil layer, there were no significant difference of BD between low and moderate intensity fire disturbance by comparison with control site, while there were significant difference between high intensity and the control, low, and moderate intensity fire (p<0.05). There were significant difference of SWR in 0-5 cm layer, but there were no significant difference of SWR between layers after fire disturbance, and there were significant difference of SOM and pH of 4 layers soil after disturbance. Except for TN of 5-10 cm layer soil, there were no significant difference of TN, TP, and TK between soil layer after fire disturbance, and there were significant difference between moderate, high intensity fire and control, low intensity fire. In short, influence of fire disturbance on the properties of soil physical and chemical gradually decreased with the deepening of soil layer, it indicated that fire disturbance has a greater impact on the physical and chemical properties of the surface soil and a smaller impact on the underlying soil.

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备注/Memo

备注/Memo:
收稿日期:2019-05-07;改回日期:2020-01-10。
基金项目:国家自然科学基金项目(31470659)
作者简介:陈小伟(1994-),女,硕士研究生,主要从事林火生态研究.E-mail:695921837@qq.com
通讯作者:刘发林(1975-),男,教授,博士,主要从事林火生态与森林资源经营管理研究.E-mail:liufl680@126.com
更新日期/Last Update: 1900-01-01