Effect of burning on soil organic matter content and N mineralization under shifting cultivation system of Karen people in Northern Thailand

Tanaka, Sota; Ando, Tomonori; Funakawa, Shinya; Sukhrun, Chainarong; Kaewkhongkha, Thammanoon; Sakurai, Katsutoshi

doi:10.1080/00380768.2001.10408418

Cited by 32 publications

(33 citation statements)

References 18 publications

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“…The partial sterilization of soil microorganisms stimulated the decomposition of SOM (Figs. 4 and 5), which has been reported by many researchers as soil burning effect in relation to N dynamics (Kyuma et al 1985;Tanaka et al 2001). The increase in the k value was responsible for the stimulation of C mineralization.…”

Section: Carbon Mineralizationmentioning

confidence: 85%

“…The increase in the temperature was relatively limited compared with that observed in other studies. Tanaka et al (2001) repOlted that in nOlthern Thailand the temperature, measured by the same method as that in this study, exceeded 300T at the depth of 2.5 cm and increased to 50 to 90°C at the depth of 5 cm when 100 Mg ha-1 of fuel was burned. This difference in the increase in soil temperature was partly attributed to the soil moisture conditions.…”

Section: Carbon Mineralizationmentioning

confidence: 99%

See 1 more Smart Citation

Effects of shifting cultivation on soil ecosystems in Sarawak, Malaysia

Kendawang¹,

Tanaka²,

Ishihara³

et al. 2004

Soil Science and Plant Nutrition

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Section: Carbon Mineralizationmentioning

confidence: 85%

Section: Carbon Mineralizationmentioning

confidence: 99%

Effects of shifting cultivation on soil ecosystems in Sarawak, Malaysia

Kendawang¹,

Tanaka²,

Ishihara³

et al. 2004

Soil Science and Plant Nutrition

Self Cite

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“…Although determining in situ fire intensity by measuring both maximum temperature and temporal change of soil temperature during burning provides valuable information, most past studies that determined fire intensity have been based on only maximum temperature (Strømgaard 1992;Kauffman et al 1993;Giardina et al 2000a;Tanaka et al 2001Tanaka et al , 2004Kendawang et al 2004Kendawang et al , 2005. Moreover, few studies in Eastern Province have analyzed in situ changes of SOM and labile C as well as available nutrients considering variations in fire intensity inside cleared fields (Chidumayo and Kwibisa 2003).…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Giardina et al (2000b) reported that the amount of SOM decreased with an increase in fire intensity in a sandy loam soil with low soil moisture content; Strømgaard (1992) showed that levels of SOM increased with any fire intensity in sandy soil with low moisture content. The different changes in SOM quality caused by different soil heating affected the release of labile carbon (C) and available nutrients (Strømgaard 1992;Ellingson et al 2000;Giardina et al 2000b;Tanaka et al 2001Tanaka et al , 2004. Thus, in situ evaluation of changes in SOM after burning is needed in Eastern Province, Zambia.…”

Section: Introductionmentioning

confidence: 99%

Short-term effects of fire intensity on soil organic matter and nutrient release after slash-and-burn in Eastern Province, Zambia

Andō

Shinjo

Noro

et al. 2014

Soil Science and Plant Nutrition

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According to the slash-and-burn technique used in Eastern Province, Zambia, cut trees are piled and burned in only a part of the cleared fields, because adequate tree biomass is not available to burn the entire field. Due to a recent decrease in emergent trees, not only emergent tree piles but also bush tree piles may exist. Therefore, our objective was to evaluate the changes in soil organic matter followed by nutrient release occurring immediately after burning in spots unburned and burned with emergent and bush trees. Fire intensity was significantly higher where emergent tree piles were present. Total carbon (C) decreased by 25.1% and 14.7% in spots burned with emergent and brush tree piles, respectively, while total nitrogen (N) decreased by 15.0% only at spots burned with emergent tree piles and did not change significantly elsewhere. Additionally, the mortality of microbes with soil heating caused an increase in C mineralization after fire. The levels of available nutrients, such as ammonium nitrogen (NH 4 -N), available phosphorus (P), and exchangeable potassium (K) and calcium (Ca), increased following the decomposition of soil organic matter and microbial mortality that occurred with an increase in fire intensity. Net N mineralization did not occur, especially in spots burned with emergent tree piles, because the N content of labile organic matter decreased. Maize (Zea mays L.) grain yield increased with fire intensity, because fire increased nutrient availability and limited weed biomass. Although the burned emergent and bush tree piles occupied only 6.9 and 7.5% of total cleared field, respectively, the grain yield in spots burned with emergent and bush trees accounted for 21% and 15% of the total yield, respectively. Therefore, the burning of bush trees, which is increasing because of the decreased number of emergent trees, could result in a decrease in grain yield but could also alleviate the overall severe loss of soil organic matter.

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“…By burning the forest canopy and surface soil in the late dry season, soluble P, K and Ca obtained as ash, and mineral N (first as ammonium and subsequently as nitrate), are produced from the lyses of proteins and amides in the SOM and dead microbes (Tanaka et al 2001). Such nutrients are further enriched in the wet season by decomposition of the raw below-ground residues like the remaining roots, with high faunal and microbial activities, but periods of frequent heavy rains are also critical for nutrient loss by leaching and soil erosion (Araki 2001).…”

Section: Slash-and-burn Cultivation a Case Of Ecosystem Fertilitymentioning

confidence: 99%