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首页> 外文期刊>Catena: An Interdisciplinary Journal of Soil Science Hydrology-Geomorphology Focusing on Geoecology and Landscape Evolution >What can we learn from ancient fertile anthropic soil (Amazonian Dark Earths, shell mounds, Plaggen soil) for soil carbon sequestration?
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What can we learn from ancient fertile anthropic soil (Amazonian Dark Earths, shell mounds, Plaggen soil) for soil carbon sequestration?

机译：我们可以从古代肥沃的人类土壤（亚马逊黑暗地球，壳牌土墩，扑渣土壤）中学到什么，用于土壤碳封存？

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摘要

Historical land use and soil management left behind anthropic soils such as Amazonian Dark Earths (Terras Pretas de Indio - pretic Anthrosols), Anthropic shell mounds (Sambaquis - terric Anthrosols), and Plaggen soils (plaggic Anthrosols), enriched in soil organic matter and soil fertility. The objective of this study was to compare soil organic matter quantity and quality of these tropical and temperate anthropic soils among each other and against their adjacent non-anthropic soils. All anthropic soil horizons had enhanced total contents of C, N, P, K, Ca, Mg and Fe, reflecting a soil organic matter and nutrient enrichment compared to their reference soils, mostly expressed by the Sambaquis. In order to better understand the mechanisms of soil organic matter stability, besides black carbon analysis, topsoils and subsoils were incubated in the laboratory at 10 degrees C and 30 degrees C and the emitted CO2 was recorded for 44-days. The Plaggen soil released the highest amount of CO2 at 30 degrees C, being two to three times higher compared to Terra Preta de Indio and Sambaqui anthropic horizons. The highest mean residence times (MRT), between 38 and 63 years, were calculated for the subsoils of the anthropic soils incubated at 10 degrees C. In the artificial system of this study, the stability of anthropic soil horizons under study was not generally enhanced when compared with their reference soils. However, enhanced stability of total organic carbon (TOC) was indicated by a negative relationship between black carbon portion of TOC and the relative amount of CO2-C released from TOC of all anthropic soils. During the incubation period of 44 days, the cumulatively mineralized amount of soil organic carbon (SOC) in the top of anthropic soils at 30 degrees C was three to six times as high as that at 10 degrees C. Consequently high temperature under tropical conditions should have stimulated the decay of organic matter, which however was not reflected by high TOC contents found in Terra Preta and Sambaqui samples, corroborating their low degradability in the long term. Therefore, we propagate that a high stability of carbon stocks exists in anthropic soil horizons, which may become a promising opportunity for the establishment of a new generation of anthropic soils with improved soil fertility and soil organic matter using the principle of soil-biochar systems.
机译：历史土地利用和土壤管理留下了亚马逊黑土（Terras Pretas de Indio-Precet arthosols），人类壳丘（Sambaquis-Tric蒽醇）和鼠疫（血浆蒽醇），富含土壤有机质和土壤生育能力。本研究的目的是将这些热带和温带的土壤有机物质和质量相互比较，并抵抗其相邻的非人体土壤。所有人类土壤视野都增强了C，N，P，K，Ca，Mg和Fe的总含量，与其参考土壤相比，反映了土壤有机质和营养富集，主要由Sambaquis表达。为了更好地理解土壤有机物稳定性的机制，除了黑碳分析之外，还在实验室中在10℃下温育甲状腺素和脱蛋白，并记录发出的CO 2 44天。与Terra Preta De Indio和Sambaqui人类视野相比，Plaggen土壤在30摄氏度下释放了最高量的CO2。最高的平均停留时间（MRT）在38至63岁之间计算出在10摄氏度孵育的人为孵育的人工制度中，在本研究的人工制度中，在研究中的稳定性地区的稳定性通常不会增强与他们的参考土壤相比。然而，通过TOC的黑碳部分与来自所有人类土壤的TOC释放的CO2-C的相对量的负相关，表明总有机碳（TOC）的增强稳定性。在44天的孵育期间，30摄氏度的人类土壤顶部的土壤有机碳（SoC）的累积矿化量为10摄氏度的3倍。因此，在热带条件下的高温应该是高温刺激了有机物的衰减，然而，在Terra Preta和Sambaqui样品中发现的高TOC含量没有反映，长期证实了它们的低降低性。因此，我们宣传了人类土壤视野中存在的高稳定性，这可能成为建立新一代人类土壤的有望的机会，采用土壤 - 生物炭系统的原理改善土壤肥力和土壤有机物。

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