Alteration process during the post-agricultural restoration of Luvisols of the temperate broad-leaved forest in Russia
Alteration process during the post-agricultural restoration of Luvisols of the temperate broad-leaved forest in Russia
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俄罗斯温带阔叶林Luvisols农后恢复过程中的变化过程
DOI：
10.1016/j.catena.2018.08.004
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发表时间：
2018
期刊：
影响因子：
6.2
通讯作者：
Giani L.
中科院分区：
文献类型：
--
作者：
Kalinina O;Chertov O;Frolov P;Goryachkin S;Kuner P;Küper J;Kurganova I;Lopes de Gerenyu L;Lyuri D;Rusakov A;Kuzyakov Y;Giani L.
这种时序研究的重点是植被演替，淋溶土成土作用，长期的碳动态在欧洲俄罗斯温带阔叶林农业恢复后。该研究包括37年（北部），120年（中部）和42年（南部）的三个时间序列，以涵盖研究区域内的气候差异。每个连锁的网站大多是在气候，土壤质地和土地历史方面的可比性，但农业废弃的持续时间不同的网站。经过120年的演替，植物群落由白桦林或梨灰林向白桦-橡树林和山羊草林演替，表明该群落已接近顶极橡树林。前同质犁层形成了一个新的形态分层类似于天然淋溶土，由于形成了一个良好的扎根啊层和O层的泥;土壤结构的变化从粗块状颗粒;和降低容重。然而，犁功能，即使经过120年的淋溶土恢复。在恢复过程中，前耕层pH值5.4-5.6（CaCl 2）的变化不大。然而，在新开发的Ah和O视野内的pH值略有增加，诱导了一个新的前犁层的pH分层，接近自然土壤。与前耕层相比，新开发的Ah层土壤有机碳（SOC）和植物有效养分（P，K）富集。在恢复过程中，5 cm矿物质表土的SOC储量从0.8增加到1.7 kg m−2（北部），从1.3增加到1.7 kg m−2（中部），从1.4增加到2.3 kg m−2（南部）。表层有机层的有机碳储量为0.1-0.2 kg m−2。然而，经过37年（北部）和42年（南部）的恢复，未达到近自然土壤的水平。该模型预测恢复时间约为150年，以达到相对稳定的状态。割草的负面影响，观察到模拟SOC积累。尽管所有这些变化，该研究显示，在120年的时间序列时间尺度内，许多参数没有完全恢复。
This chronosequential study focuses on the vegetation succession, Luvisol pedogenesis, and long-term carbon dynamics during post-agricultural restoration in the temperate broad-leaved forest of European Russia. The study comprises three chronosequences of 37 years (North), 120 years (Middle), and 42 years (South) to cover climatic differences within the study area. The sites of eachcatenawere mostly comparable in terms of climate, soil texture, and land history, but the duration of agricultural abandonment differed between sites. Plant succession developed via a birch forest or a pear-ash woodland to a birch-oak forest withAegopódium podagráriaafter 120 years, which indicates the plant association is near to a climax oak forest. Former homogenous plow horizons formed a new morphological stratification similar to natural Luvisols, due to the formation of a well rooted Ah horizon and an O horizon of mull; a change in soil structure from coarse blocky to granular; and decreasing bulk densities. However, plow features were identified even after 120 years of Luvisols restoration. During restoration, the former plow horizons showed minor changes of pH 5.4–5.6 (CaCl2). However, a slightly increased pH value within the newly developed Ah and O horizons induced a new pH stratification of the former plow horizon, approaching the natural soils. Compared to the former plow horizons below, soil organic carbon (SOC) and plant available nutrients (P, K) enrichment was observed within the newly developed Ah horizons. The SOC stocks of the 5 cm mineral topsoil increased from 0.8 to 1.7 kg m−2(North), from 1.3 to 1.7 kg m−2(Middle), and from 1.4 to 2.3 kg m−2(South) during restoration. The surface organic layers showed SOC stocks of 0.1–0.2 kg m−2. However, the levels of the near-natural soils were not reached after 37 years (North) and 42 years (South) of restoration. The model predicted a recovery time of about 150 years to achieve a comparatively steady state. A negative effect of mowing was observed for the modelled SOC accumulation. Despite all these alterations, the study showed no full restoration for many parameters within the chronosequential timescale of 120 years.
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