Citation: | DUAN Wenchao,HU Xiewen,HE Kun,et al. Study of factors influencing soil water repellency under simulated forest fire[J]. The Chinese Journal of Geological Hazard and Control,2025,36(4): 1-10. DOI: 10.16031/j.cnki.issn.1003-8035.202403037 |
Yunnan pine, as the prominent arboreal species in the southwestern mountains, exhibits abundant resin content and displays susceptibility to forest fires. Soil in fire-affected areas typically exhibits water repellency after a forest fire, leading to increased surface runoff and erosion within the affected area, ultimately triggering post-fire debris flows. In order to investigate the influencing factors and formation mechanism of soil water repellency, unburned soils in the pine forest vegetation area of Lawo Township, Mianning County, Sichuan Province was selected as the research project. Indoor simulated fire experiment were conducted, and orthogonal experiments were designed considering factors such as turpentine content, soil debris content, initial organic content, heating temperature, and heating period. X-ray diffraction and scanning electron microscopy were used to analyze changes in chemical elements and microstructure, studying the impact of forest fires on soil water repellency. The results showed that the degree of influence of various factors on soil water repellency was ranked as follows: initial organic matter content, heating temperature, heating period, pine resin content, and debris content. The initial organic matter content and heating temperature on soil water repellency was highly significant, while heating time and pine resin content was significant, and debris content had no significant impact. All factors could cause changes in organic compounds in the soil, thereby affecting soil water repellency. Specifically, after moderate burning (temperature ≤ 400 °C), organic compounds in the soil underwent chemical changes, forming dense hydrophobic organic matter films covering the surface of mineral particles and filling the interstitial space of the particles, resulting in enhanced soil water repellency. Excessive burning (temperature > 400 °C) resulted in the consumption of organic matter, the destruction of soil microaggregate structure, loose stacking of mineral particles, and a decrease in soil water repellency. The research results can provide a basis for the soil erosion pattern of soil in pine forest fire-affected areas and the formation mechanism of post-fire debris flows.
[1] |
王严,胡卸文,杨瀛,等. 火烧迹地土壤斥水性和渗透性变化特性[J]. 水文地质工程地质,2019,46(6):40 − 45. [WANG Yan,HU Xiewen,YANG Ying,et al. Research on the change in soil water repellency and permeability in burned areas[J]. Hydrogeology & Engineering Geology,2019,46(6):40 − 45. (in Chinese with English abstract)]
WANG Yan, HU Xiewen, YANG Ying, et al. Research on the change in soil water repellency and permeability in burned areas[J]. Hydrogeology & Engineering Geology, 2019, 46(6): 40 − 45. (in Chinese with English abstract)
|
[2] |
胡卸文,金涛,殷万清,等. 西昌市经久乡森林火灾火烧区特点及火后泥石流易发性评价[J]. 工程地质学报,2020,28(4):762 − 771. [HU Xiewen,JIN Tao,YIN Wanqing,et al. The characteristics of forest fire burned area and susceptibility assessment of post-fire debris flow in jingjiu township,Xichang City[J]. Journal of Engineering Geology,2020,28(4):762 − 771. (in Chinese with English abstract)]
HU Xiewen, JIN Tao, YIN Wanqing, et al. The characteristics of forest fire burned area and susceptibility assessment of post-fire debris flow in jingjiu township, Xichang City[J]. Journal of Engineering Geology, 2020, 28(4): 762 − 771. (in Chinese with English abstract)
|
[3] |
WU Yichen,ZHANG Nan,SLATER G,et al. Hydrophobicity of peat soils:Characterization of organic compound changes associated with heat-induced water repellency[J]. The Science of the Total Environment,2020,714:136444. DOI: 10.1016/j.scitotenv.2019.136444
|
[4] |
MAO Jiefei,ZHANG Kun,CHEN Baoliang. Linking hydrophobicity of biochar to the water repellency and water holding capacity of biochar-amended soil[J]. Environmental Pollution,2019,253:779 − 789. DOI: 10.1016/j.envpol.2019.07.051
|
[5] |
THOMAZ E L,FACHIN P A. Effects of heating on soil physical properties by using realistic peak temperature gradients[J]. Geoderma,2014,230/231:243 − 249. DOI: 10.1016/j.geoderma.2014.04.025
|
[6] |
POESEN J,LAVEE H. Rock fragments in top soils:Significance and processes[J]. CATENA,1994,23(1/2):0341816294900507.
|
[7] |
DOERR S H,THOMAS A D. The role of soil moisture in controlling water repellency:New evidence from forest soils in Portugal[J]. Journal of Hydrology,2000,231/232:134 − 147. DOI: 10.1016/S0022-1694(00)00190-6
|
[8] |
张绍科,胡卸文,王严,等. 四川省冕宁县华岩子沟火后泥石流成灾机理[J]. 中国地质灾害与防治学报,2021,32(5):79 − 85. [ZHANG Shaoke,HU Xiewen,WANG Yan,et al. Disaster mechanism of post-fire debris flow in Huayanzi gully,Mianning County,Sichuan Province[J]. The Chinese Journal of Geological Hazard and Control,2021,32(5):79 − 85. (in Chinese with English abstract)]
ZHANG Shaoke, HU Xiewen, WANG Yan, et al. Disaster mechanism of post-fire debris flow in Huayanzi gully, Mianning County, Sichuan Province[J]. The Chinese Journal of Geological Hazard and Control, 2021, 32(5): 79 − 85. (in Chinese with English abstract)
|
[9] |
杨瀛,胡卸文,王严,等. 八角楼乡火后泥石流空间发育特征[J]. 西南交通大学学报,2021,56(4):818 − 827. [YANG Ying,HU Xiewen,WANG Yan,et al. Spatial development characteristics of post-fire debris flow in Bajiaolou Town[J]. Journal of Southwest Jiaotong University,2021,56(4):818 − 827. (in Chinese with English abstract)]
YANG Ying, HU Xiewen, WANG Yan, et al. Spatial development characteristics of post-fire debris flow in Bajiaolou Town[J]. Journal of Southwest Jiaotong University, 2021, 56(4): 818 − 827. (in Chinese with English abstract)
|
[10] |
GORDILLO-RIVERO Á J,GARCÍA-MORENO J,JORDÁN A,et al. Fire severity and surface rock fragments cause patchy distribution of soil water repellency and infiltration rates after burning[J]. Hydrological Processes,2014,28(24):5832 − 5843. DOI: 10.1002/hyp.10072
|
[11] |
DEBANO L,RICE R M,CONRAD C E. Soil heating in chaparral fires:Effects on soil properties,plant nutrients,erosion,and runoff[J]. USDA Forest Service Research Paper PSW (USA). no. 145. 1979.
|
[12] |
GIMENO-GARC\'\IA E,ANDREU V,RUBIO J L. Spatial patterns of soil temperatures during experimental fires[J]. Geoderma,2004,118(1/2):17 − 38.
|
[13] |
何诚,舒立福,刘超,等. 南方人工林地阴燃火温度变化特征研究[J]. 林业工程学报,2020,5(2):151 − 157. [HE Cheng,SHU Lifu,LIU Chao,et al. Research on variation of temperature of underground fire in south China plantation[J]. Journal of Forestry Engineering,2020,5(2):151 − 157. (in Chinese with English abstract)]
HE Cheng, SHU Lifu, LIU Chao, et al. Research on variation of temperature of underground fire in south China plantation[J]. Journal of Forestry Engineering, 2020, 5(2): 151 − 157. (in Chinese with English abstract)
|
[14] |
ZAVALA L M,GRANGED A J P,JORDÁN A,et al. Effect of burning temperature on water repellency and aggregate stability in forest soils under laboratory conditions[J]. Geoderma,2010,158(3/4):366 − 374.
|
[15] |
CERTINI G,NOCENTINI C,KNICKER H,et al. Wildfire effects on soil organic matter quantity and quality in two fire-prone mediterranean pine forests[J]. Geoderma,2011,167/168:148 − 155. DOI: 10.1016/j.geoderma.2011.09.005
|
[16] |
JORDÁN A,ZAVALA L M,MATAIX-SOLERA J,et al. Effect of fire severity on water repellency and aggregate stability on Mexican volcanic soils[J]. CATENA,2011,84(3):136 − 147. DOI: 10.1016/j.catena.2010.10.007
|
[17] |
BODÍ M B,MARTIN D A,BALFOUR V N,et al. Wildland fire ash:Production,composition and eco-hydro-geomorphic effects[J]. Earth-Science Reviews,2014,130:103 − 127. DOI: 10.1016/j.earscirev.2013.12.007
|
[18] |
MASTROLONARDO G,CERTINI G,KREBS R,et al. Effects of fire on soil organic matter quality along an altitudinal sequence on Mt. Etna,Sicily[J]. CATENA,2013,110:133 − 145. DOI: 10.1016/j.catena.2013.05.017
|
[19] |
胡彩莉,马玉贞,郭超,等. 烧失量法测定土壤有机质含量的实验条件探究[J]. 地球与环境,2016,44(1):110 − 118. [HU Caili,MA Yuzhen,GUO Chao,et al. Optimization of the experiment conditions for estimating organic matter content with loss-on-ignition method[J]. Earth and Environment,2016,44(1):110 − 118. (in Chinese with English abstract)]
HU Caili, MA Yuzhen, GUO Chao, et al. Optimization of the experiment conditions for estimating organic matter content with loss-on-ignition method[J]. Earth and Environment, 2016, 44(1): 110 − 118. (in Chinese with English abstract)
|
[20] |
杜娟. 海南有机质浸染砂水泥土力学特性及微观机理研究[D]. 天津:天津大学,2021. [DU Juan. Mechanical properties and micro-mechanism of cement-stabilized organic-matter-disseminated sand in Hainan[D]. Tianjin:Tianjin University,2021. (in Chinese with English abstract)]
DU Juan. Mechanical properties and micro-mechanism of cement-stabilized organic-matter-disseminated sand in Hainan[D]. Tianjin: Tianjin University, 2021. (in Chinese with English abstract)
|
[21] |
JORDÁN A,GONZÁLEZ F A,ZAVALA L M. Re-establishment of soil water repellency after destruction by intense burning in a Mediterranean heathland (SW Spain)[J]. Hydrological Processes,2010,24(6):736 − 748. DOI: 10.1002/hyp.7519
|
[22] |
DE BLAS E,ALMENDROS G,SANZ J. Molecular characterization of lipid fractions from extremely water-repellent pine and eucalyptus forest soils[J]. Geoderma,2013,206:75 − 84. DOI: 10.1016/j.geoderma.2013.04.027
|
[23] |
吴小雨,涂安国,李国辉,等. 土壤斥水性影响因素及管理措施研究综述[J]. 中国水土保持,2023(1):27 − 30. [WU Xiaoyu,TU Anguo,LI Guohui,et al. Review on the influencing factors and management measures of soil water repellency[J]. Soil and Water Conservation in China,2023(1):27 − 30. (in Chinese with English abstract)]
WU Xiaoyu, TU Anguo, LI Guohui, et al. Review on the influencing factors and management measures of soil water repellency[J]. Soil and Water Conservation in China, 2023(1): 27 − 30. (in Chinese with English abstract)
|
[24] |
MATAIX-SOLERA J,CERD\`A A,ARCENEGUI V,et al. Fire effects on soil aggregation:A review[J]. Earth Science Reviews,2011,109(1):44 − 60.
|
[25] |
ALCAÑIZ M,OUTEIRO L,FRANCOS M,et al. Effects of prescribed fires on soil properties:A review[J]. The Science of the Total Environment,2018,613/614:944 − 957. DOI: 10.1016/j.scitotenv.2017.09.144
|
[26] |
THOMAZ E L. Effects of fire on the aggregate stability of clayey soils:A meta-analysis[J]. Earth-Science Reviews,2021,221:103802. DOI: 10.1016/j.earscirev.2021.103802
|
[27] |
FRANCO C M M,CLARKE P J,TATE M E,et al. Hydrophobic properties and chemical characterisation of natural water repellent materials in Australian sands[J]. Journal of Hydrology,2000,231/232:47 − 58. DOI: 10.1016/S0022-1694(00)00182-7
|
[28] |
GARCÍA MORENO J,GORDILLO R Á J,GIL T J,et al. Do stones modify the spatial distribution of fire induced soil water repellency? Preliminary data[J]. Flamma,2013,4(2):76.
|