Soil erosion and properties as affected by fire and time after fire events in steep rangelands using 137Cs technique

Ayoubi, Shamsollah; Rabiee, Shirin; Mosaddeghi, Mohammad Reza; Abdi, Mohammad Reza; Afshar, Farideh Abbaszadeh

doi:10.1007/s12517-020-06351-1

Cited by 15 publications

(7 citation statements)

References 43 publications

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“…As a consequence, soil porosity and permeability decrease as bulk density generally increases when ashes reach the first few centimeters of the soil [87]. In addition, increased bulk density soon after a wildfire has been associated with increased erosion rates and decreased soil SOM content [16]. In contrast, the low severity fire (2B-LS: 2019, 2 years after fire) led to a decrease in bulk density value and The green circle is the moderate low severity fire of 2017 (3B-MLS) and the black circle is the high severity fire in 2017 (4B-HS).…”

Section: Discussionmentioning

confidence: 99%

“…This depends on fire weather, which can change abruptly, water balance, topography (slope), vegetation type, fuel load, and fuel moisture content [13][14][15]. According to Ayoubi et al [16], these processes can greatly alter the physical and chemical characteristics of the soil, causing a resultant loss of nutrients. As temperature increases during a fire, the temperature above and below the ground also increases, which causes heating of the mineral content and the consumption of organic matter (SOM) [17], causing changes in bulk density, porosity, texture, color, moisture content, and effects on permeability [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Effects of the Severity of Wildfires on Some Physical-Chemical Soil Properties in a Humid Montane Scrublands Ecosystem in Southern Ecuador

Carrión-Paladines

Hinojosa

Jiménez

et al. 2022

Fire

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Humid montane scrublands (HMs) represent one of the least studied ecosystems in Ecuador, which in the last decade have been seriously threatened by the increase in wildfires. Our main objective was to evaluate the effects of wildfire severity on physicochemical soil properties in the HMs of southern Ecuador. For this purpose, fire severity was measured using the Normalized Burn Ratio (NBR) and the difference between pre-fire and post-fire (NBR Pre-fire-NBR Post-fire) over three contrasted periods (years 2019, 2017, and 2015) was determined. Likewise, 72 soil samples from burned HMs and 72 soil samples from unburned HMs were collected at a depth of 0 to 10 cm, and some physical (bulk density and texture) and biochemical (pH, soil organic matter, and total nutrients) soil properties were analyzed and statistically processed by one-way ANOVA and principal component analysis (PCA). Results indicate that burned HMs showed mixed-severity burning patterns and that in the most recent wildfires that are of high severity, SOM, N, P, Cu, and Zn contents decreased drastically (PCA: component 1); in addition, there was an increase in soil compaction (PCA: component 2). However, in older wildfires, total SOM, N, P, K, and soil pH content increases with time compared even to HMs that never burned (p-value < 0.05). These results can help decision makers in the design of policies, regulations, and proposals for the environmental restoration of HMs in southern Ecuador affected by wildfires.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of the Severity of Wildfires on Some Physical-Chemical Soil Properties in a Humid Montane Scrublands Ecosystem in Southern Ecuador

Carrión-Paladines

Hinojosa

Jiménez

et al. 2022

Fire

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“…According to the data, from 2000 to 2018, the province invested about CNY 1.87 × 10 4 million in the ecological environment construction of soil and water conservation, covering an area of 3.05 × 10 4 km 2 . From 2005 to 2016, the area of rocky desertification in the Guizhou Province decreased by 25.5%, or about 8460 km 2 . In recent years, the social and economic development of Guizhou Province has been rapid.…”

Section: Study Sitementioning

confidence: 99%

“…Soil erosion leads to a loss of soil nutrients [1,2], and land degradation caused by soil erosion is one of the main threats to environment and human security in the 21st century [3][4][5]. Soil erosion is also a major environmental and ecological problem in China, especially in the Loess Plateau in northwest China, the black soil area in northeast China and the karst area in southwest China [6,7].…”

Section: Introductionmentioning

confidence: 99%

RUSLE Model Evaluation of the Soil and Water Conservation Ratio of the Guizhou Province in China between 2000 and 2019

Fang

et al. 2022

Sustainability

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The soil and water conservation ratio (SWCR), which is a quantitative index for measuring the control degree of soil and water loss, is equal to the percentage of the land areas with a slight erosion intensity in the study area. The dynamic change in the SWCR reflects the dynamic process of realizing a specific soil and water conservation goal in a certain stage. The objectives of this study were to evaluate the change in the SWCR in the Guizhou Province in this century and to analyze its causes. The temporal and spatial variations of soil erosion intensity and SWCR were measured based on GIS technology and revised universal soil loss equation (RUSLE). The results showed that the spatial pattern of soil erosion intensity in the Guizhou Province was high in the west and low in the southeast, and that the soil erosion characteristics were obviously different between karst and non-karst areas. In the karst areas, the land with a moderate and above erosion intensity (>3 t hm−2 y−1 in the karst area; >25 t hm−2 y−1 in the non-karst area) accounted for 28.20–34.78% of the total area, while only accounting for 2.39–2.72% in the non-karst areas. From 2000 to 2019, the mean intensity of soil erosion decreased from 13.97 to 10.83 t hm−2 y−1, and the SWCR increased from 32.95% to 35.31%. According to the change in erosion intensity grades, 22.30% of the whole province’s erosion grade changed from high to low, especially in the west, with a high erosion intensity. Meanwhile, about 11.99% of the land in the central, eastern and southeastern regions, was where the erosion intensity showed a slight increase and the spatial distribution showed sporadic patch distribution characteristics, which may be related to an increase in infrastructure investment in the Guizhou Province in recent years. A large number of production and construction projects caused the destruction of surface vegetation and also caused patchy soil erosion. The spatial and temporal characteristics of the soil erosion and the SWCR in the Guizhou Province between 2000 and 2019 were mastered through this study, and our results provide an important basis for further scientific and reasonable soil and water conservation planning work.

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“…Te efects of surface fre are more complex and comparatively less known than those of above-ground fre [8]. Fire alters the physicochemical properties of the soil, causing nutrient loss [9]. Increased temperature supplies high heat to the mineral content and organic matter [10] and ultimately changes soil chemical properties [11].…”

Section: Introductionmentioning

confidence: 99%

Low-Intensity Wildfire Alters Selected Soil Properties in the Tropical Shorea robusta Forest

Dhungana,

Thapa Chhetri,

Baniya

et al. 2024

International Journal of Forestry Research

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Wildfires may impact specific soil properties differently, including positive, negative, or neutral effects. However, due to the absence of uniformity in comprehending how wildfires influence soil nutrients, this research endeavors to scrutinize the particular effect of wildfire on selected soil properties in the tropical Shorea robusta forest. We analyzed 42 soil samples obtained from the topsoil of 0–10 cm comprising 21 samples from the fire-affected area and 21 from the fire-unaffected area. The physicochemical parameters of the soil including soil pH, soil organic carbon (SOC), total nitrogen (TN), available phosphorus, and available potassium were examined and compared in two sites. The impact of fire was statistically tested after comparing each variable between the two sites. Using the Mann–Whitney U test and the Pearson correlation coefficient, we analyzed the data. The results indicated that the average chemical parameters of the soil except for pH in the fire-affected area (pH = 5.43, SOC = 1.6%, TN = 0.1%, and P=246.85 kg·ha−1) were greater than those in the fire-unaffected area (pH = 5.71, SOC = 1.21%, TN = 0.09%, and P=174.21 kg·ha−1). There were statistically significant differences in the soil parameters, including pH, SOC, TN, and P, but not with K. The soil pH was reduced in the fire-affected area, with a significant positive correlation with SOC, TN, and K. Overall, the low-intensity wildfire facilitated the proliferation of soil chemical properties in the tropical S. robusta forest. Hence, low-intensity wildfire could be a suitable forest management strategy to alter soil nutrient status. Additionally, these findings can aid in enhancing forest fire management strategies for effectively managing the tropical S. robusta forest.

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Soil erosion and properties as affected by fire and time after fire events in steep rangelands using 137Cs technique

Cited by 15 publications

References 43 publications

Effects of the Severity of Wildfires on Some Physical-Chemical Soil Properties in a Humid Montane Scrublands Ecosystem in Southern Ecuador

Effects of the Severity of Wildfires on Some Physical-Chemical Soil Properties in a Humid Montane Scrublands Ecosystem in Southern Ecuador

RUSLE Model Evaluation of the Soil and Water Conservation Ratio of the Guizhou Province in China between 2000 and 2019

Low-Intensity Wildfire Alters Selected Soil Properties in the Tropical Shorea robusta Forest

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