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首页> 外文期刊>Soil Research >Carbon mineralisation kinetics of poultry manure in two soils
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Carbon mineralisation kinetics of poultry manure in two soils

机译：两种土壤中家禽粪便的碳矿化动力学

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摘要

Soil has an important role in the greenhouse effect as a net source or net sink of greenhouse gases. This study compared CO_2 emission from broiler poultry manure (PMB) and hen poultry manure (PMH) in two different soils. A laboratory experiment was conducted to evaluate the decomposition of poultry manure by analysing carbon mineralisation. Jars were filled with soil, sealed, and placed in an incubator for 60 days, with periodic CO_2 analysis. Higher emissions were found in soil amended with PMH; cumulative carbon released as CO_2 was 800 mg C/kg in soil amended with PMH, and 600 mg C/kg with PMB. Data for cumulative CO_2-C released from unamended and amended soils were fitted to four different kinetic models. With poultry manure, there were significant differences in the model parameters that represent the amount of total potentially mineralisable carbon and the mineralisation rate constant. After 60 days, the percentages of organic carbon mineralised for PMH were 40% and 26% for each soil, whereas the percentages were 20% and 12% for PMB.
机译：土壤作为温室气体的净源或净汇在温室效应中具有重要作用。这项研究比较了两种不同土壤中肉鸡家禽粪便（PMB）和母鸡家禽粪便（PMH）的CO_2排放。通过分析碳矿化作用，进行了实验室实验以评估家禽粪便的分解。将广口瓶装满土壤，密封，并在培养箱中放置60天，并定期进行CO_2分析。在用PMH改良的土壤中发现了更高的排放量;用PMH修正的土壤中以CO_2形式释放的累积碳为800 mg C / kg，而使用PMB修正为600 mg C / kg。从未改良土壤和改良土壤中释放的累积CO_2-C数据适用于四种不同的动力学模型。对于家禽粪便，模型参数之间存在显着差异，这些参数代表潜在的可矿化碳总量和矿化速率常数。 60天后，每种土壤的PMH矿化的有机碳百分比分别为40％和26％，而PMB的百分比为20％和12％。

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