Effects of Burning on Chaparral Soils: I. Soil Nitrogen

DeBano, Leonard F.; Eberlein, Gary E.; Dunn, Paul H.

doi:10.2136/sssaj1979.03615995004300030015x

Cited by 129 publications

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“…The fire-induced increase of available cations observed in the burnt plots were in accordance with the results of DeBano et al (1979) and Trabaud (1983) with burnt soils, and also with those of Fassbender (1975) for Ca, Mg and Na in oven-heated soils. This effect is probably due to the accumulation of ashes rich in oxides and carbonates of basic ions that have been reported by several authors (Chandler et al, 1983;Kutiel et al, 1990;Carballas, 1997), and also to the cations (especially Na) supplied by the fire fighting chemicals.…”

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confidence: 89%

“…The NH 4 + -N increase that takes place just after the fire in all burnt soil treatments is a common tendency of recently heated or burnt soils (DeBano et al, 1979;Chandler et al, 1983;Prieto-Fernández et al, 1993). As has previously been mentioned, differences in NH 4 + -N content compared with the US were significant for all soils treated with fire fighting chemicals, but the extremely high concentration of BS+Ap was very likely due to the NH 4 + -N supplied by the ammonium polyphosphate.…”

mentioning

confidence: 99%

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Short- and medium-term effects of three fire fighting chemicals on the properties of a burnt soil

Couto-Vázquez

González-Prieto

2006

Science of The Total Environment

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The impact of three fire fighting chemicals (FFC) on 11 chemical soil properties and on soil recovery (0-2 cm depth) was evaluated 1, 30, 90 and 365 d after a prescribed fire. Five treatments were considered: unburnt soil (US) and burnt soil with 2 l m -2 of water alone (BS) or mixed with the foaming agent Auxquímica RFC-88 at 1% (BS+Fo), Firesorb at 1.5% (BS+Fi) and FR Cross ammonium polyphosphate at 20% (BS+Ap). At t=1 d, soil pH increases in the order US < BS . BS+Fo, BS+Fi < BS+Ap, which was most likely due to the accumulation of ashes, the reduction of organic acids and the cations supplied by FFC. In all burnt treatments, soil pH remained significantly higher than in US up until t=90 d. SOM richness remained similar and constant until t=90 d in all plots, but, probably due to fire-triggered erosion, at t=365 d it was significantly lower in BS+Ap (C, N), BS and BS+Fo (C) than in US. Immediately after the fire, soil * + -N levels in BS+Ap (200x that of US; 9-18x those of BS, BS+Fo and BS+Fi), and its persistence can delay the post-fire vegetation recovery due to the toxicity of NH 4 + to seeds and seedlings. NO 3 -N levels changed significantly only in BS+Ap between t=30 and t=90 d due to the nitrification of its large NH 4 + -N pool. Except in BS+Ap, whose soil P levels were 70-140x (t=1 d) and 10-20x (t=365 d) higher than in the other treatments, available P content in BS and BS+FFC was not significatively higher than in US. The concentrations of available cations in BS and BS+FFC were higher (not always significatively, except for K) than in US until t=90 d, likely due to ashes-and FFC-derived cations. Contrarily to divalent cations, monovalent cations (more soluble and easily leached) decreased slowly until t=90 d.

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confidence: 89%

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confidence: 99%

Short- and medium-term effects of three fire fighting chemicals on the properties of a burnt soil

Couto-Vázquez

González-Prieto

2006

Science of The Total Environment

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“…As in the case of soil organic C, organic N content significantly decreased in the burned soil ( Table 2). The the level of total N, when soil and layers of organic residues remain wet less than 25% of total soil N is lost (DeBano et al 1979). In this study, high soil water content (Table 2) could account for the low percentage of N losses.…”

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confidence: 64%

Journal of Range Management, Volume 56, Number 3 (May 2003)

2003

REM

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“…Due to forest clearance lower total N content in soil was reported by several authors from different parts of the world (Girma 1998;Jing-cheng et al 2004). DeBano et al (1979) reported that losses of soil N can occur when heated to temperature as high as 100 o C, which may happen during burning associated with shifting cultivation. Significant increase in available Ca and Mg of the preset study compared to forest land in most of the locations was in agreement with Gafur et al (2000), who also reported an increase of the two elements in shifting cultivated soil than mixed planted forest land in Banderban district.…”

Section: Discussionmentioning

confidence: 99%

Shifting Cultivation Effects on Soil Environment in Upland Watershed of Bangladesh

Haque¹,

Gupta²,

Miah³

2014

Journal of Forest and Environmental Science

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This research reports the effects of shifting cultivation on soil environment collecting samples from 0-5 cm soil depth from five locations viz. at Burburichhara, Maichchari, Longadu, Sukurchhari and Muralipara in Rangamati district of Chittagong Hill Tracts (CHTs). Soil analyses showed that fungal and bacterial population, microbial respiration and active microbial biomass, maximum water holding capacity, conductivity and moisture contents were significantly (at least p≤0.05) lower in shifting cultivated soil compared to adjacent mixed tree plantations at all the sites. On an average in soils of 5 different shifting cultivated lands fungal population was 1.33x10 5 CFU/g dry soil and bacterial population 1.80x10 7 CFU/g dry soil and in mixed plantations fungal population was 1.70x10 5 and bacterial population 2.51x10 7 CFU/g dry soil. Organic matter and exchangeable Ca and Mg contents were significantly (at least p≤0.05) lower and bulk density significantly (at least p≤0.05) higher in shifting cultivated land in most of the locations compared to adjacent mixed tree plantations. Ratios of microbial respiration and organic carbon as well as active microbial biomass and organic carbon were distinctly lower and pH higher at 3 locations in shifting cultivated soils compared to mixed plantations. Findings of various soil properties, therefore, suggest that shifting cultivation has deteriorating effects on soil environment.

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Effects of Burning on Chaparral Soils: I. Soil Nitrogen

Cited by 129 publications

References 0 publications

Short- and medium-term effects of three fire fighting chemicals on the properties of a burnt soil

Short- and medium-term effects of three fire fighting chemicals on the properties of a burnt soil

Journal of Range Management, Volume 56, Number 3 (May 2003)

Shifting Cultivation Effects on Soil Environment in Upland Watershed of Bangladesh

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