Tropical peatlands play an important role in the global carbon cycle, and therefore, their stability has important implications for climate change. In this study, we evaluated the effect of fire on the physical, chemical, and biological properties of peat soils in Indonesia for three years following exposure to fire. The results of the thermal analysis suggest that the organic matter contents of surface soils significantly decreased because of peat fires and that charred materials were produced in the subsurface layer of the burned soils. The atomic ratios of the burned soils and the thermally treated samples indicate that the Indonesian peat soils were dehydrated by these low-severity fires. The microbial abundance and phosphatase activity in the burned soils significantly decreased compared to those of the unburned soils. Leaching of the dissolved organic carbon (DOC) concentration from the burned soils is lower than that from the unburned soils. The obtained laboratory results indicate that the concentration of the leached DOC increased drastically after heat treatments near the ignition temperature. It was seen that the denaturation of the soil organic matter caused by the heat from the fire accelerates the exodus of organic carbon in peatlands, which contain huge accumulations of carbon.

中文翻译：

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泥炭火灾对土壤的影响以及印度尼西亚中部加里曼丹省热带泥炭土壤中溶解性有机碳的出口

热带泥炭地在全球碳循环中起着重要作用，因此，其稳定性对气候变化具有重要意义。在这项研究中，我们评估了大火对印度尼西亚泥炭土壤物理，化学和生物学特性的影响，这种影响持续了三年。热分析的结果表明，由于泥炭大火，表层土壤的有机物含量显着降低，并且在燃烧过的土壤的表层下产生了烧焦的物质。燃烧过的土壤和热处理过的样品的原子比表明，印尼泥炭土被这些低强度的火灾脱水了。与未燃烧土壤相比，燃烧土壤中的微生物丰度和磷酸酶活性显着降低。从燃烧过的土壤中溶出的有机碳（DOC）浓度的浸出低于未燃烧过的土壤中的溶出有机碳（DOC）浓度。所获得的实验室结果表明，在接近着火温度的热处理后，浸出DOC的浓度急剧增加。可以看出，由火热产生的土壤有机质的变性加速了泥炭地中有机碳的外流，泥炭地中含有大量的碳。