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首页> 外文期刊>Soil and Water Research >Humus Substances and Soil Aggregates in the Soils with Different Texture
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Humus Substances and Soil Aggregates in the Soils with Different Texture

机译：不同纹理土壤中的腐殖质和土壤聚集体

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Humus substances (HS) influence the incorporation of carbon into soil aggregates in many ways. In this study the influence of HS and their fractions in the soil on the proportions of carbon (total organic, labile, non-labile) in water-resistant macro-aggregates (WSA) and differences between the amount of carbon in WSA in coarse-grained (CGS) and fine-grained (FGS) soils with dependence on the proportions of HS in the soil were determined. The experiment included three soils (Haplic Chernozem, Haplic Luvisol, Eutric Cambisol), each of them with two different soil textures (CGS, FGS) from four ecosystems (forest, meadow, urban, and agro-ecosystem). In CGS, higher proportions (52 and 50%) of smaller ( 1 mm) dry-sieved macro-aggregates (DSA) and also WSA were determined, while in FGS, higher proportions (51 and 53%) of larger DSA ( 7 mm) and WSA ( 2 mm) were detected. A negative correlation was recorded between the content of organic carbon in the fractions of WSA and the amount of extracted humic acids (HA) in CGS, and fulvic acids (FA) in FGS. In CGS, the correlation between the carbon content in WSA and HA bound with Ca2+ and Mg2+, which forms humates (HA2), was negative. In FGS, a negative correlation was recorded between the carbon content in WSA and free aggressive FA (FA1a) and free FA and those, which are bound with monovalent cations and mobile R2O3 (FA1) in the soil. In the case of FA1a, a negative correlation was recorded in FGS and also in CGS, however this influence was more marked in CGS than in FGS (by about 21% higher correlation). In CGS, the influence of HA and FA in soil on the content of labile carbon in aggregates was stronger than in FGS. In CGS, a higher proportion of carbon in aggregates was detected in the case of lower stability of HS and HA and, on the contrary, in FGS, a higher content of carbon in aggregates was detected in the case of their higher stability.
机译：腐殖质物质（HS）在许多方面影响碳的掺入土壤骨料中。在这研究中，HS及其级分在土壤中对耐水宏观聚集体（WSA）的比例（总有机，不稳定，不稳定）（WSA）和WSA中碳量之间的差异的影响确定了谷氨（CGS）和细粒（FGS）土壤，具有依赖于土壤中的HS中的HS比例。该实验包括三种土壤（单板Chernozem，Haplic Luvisol，Eutric Cambisol），其中每一个都有来自四个生态系统（森林，草地，城市和农业生态系统）的两种不同的土壤纹理（CGS，FGS）。在CGS中，测定更高的比例（52和50％）的较小（52和50％）干筛分宏观聚集体（DSA）和WSA，而在FGS中，较高比例（51和53％）较大DSA（ ＆ 7 mm）和WSA（＆ 2 mm）被检测到。在WSA级分中的有机碳含量和CGS中提取的腐殖酸（HA）的量的含量碳的含量和FGS中的富含腐殖酸（FA）之间的含量相关。在CGS中，WSA和HA与Ca2 +和Mg2 +的碳含量与形成舒适（HA2）的碳含量之间的相关性。在FGS中，在WSA的碳含量和自由侵略性FA（FA1A）和免费FA的碳含量和可自由的FA和那些之间的碳含量之间记录了负相关性。在FA1A的情况下，在FGS中记录负相关性，并且还记录CGS，然而，在CGS中比FGS更具标记（较高的相关性约为21％）。在CGS中，HA和FA在土壤中的含量在骨料中的含量含量强于FGS。在CGS中，在HS和HA稳定性较低的情况下，在HS和HA稳定性的情况下检测到较高比例的碳，并且相反，在FGS中，在其稳定性更高的情况下检测聚集体中含量较高的碳含量。

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