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Postagrogenic development of Retisols in the middle taiga subzone of European Russia (Komi Republic)
Land Degradation & Development ( IF 4.7 ) Pub Date : 2018-02-05 , DOI: 10.1002/ldr.2881
Alexey A. Dymov 1 , Yuriy A. Dubrovskiy 1 , Viktor V. Startsev 1
Affiliation  

Reforestation on abandoned agricultural lands is widespread in the belt of boreal forests. We analyzed the morphological and physicochemical properties of a Plaggic Glossic Retisol (Siltic, Cutanic) site that had been abandoned either 7, 19, or 85 years ago, as well as a Glossic Stagnic Retisol (Siltic, Cutanic) as a control. Involvement of forest soils in agricultural use results in the degradation of organic horizons, which are not restored until many decades after the termination of active agricultural use. Arable soil horizons were preserved and were clearly identified 85 years after the land had been abandoned. The morphological features of the eluvial and subeluvial horizons were determined at all sites. Soils at sites that had been abandoned for 7 and 19 years showed lower acidity and higher base saturation compared to the background soil. Total carbon stocks were lower at the abandoned sites. The slow increase of carbon stocks after the soil had been abandoned is caused by C increase as in the organic as in the topsoil mineral horizons. Soils that had been abandoned for 7 and 19 years contained less water‐extractable forms of C and N than the control and 85‐year forest soils. Agricultural use leads to a reduction in C stocks of forest soils. The postagrogenic soil C sequestration rate was estimated to be 30–40 g·m−2·yr−1.

中文翻译:

欧洲俄罗斯(科米共和国)中部针叶林次带中的视黄醇的后农业发展

废弃农业土地上的植树造林在北方森林带中很普遍。我们分析了7、19或85年前被废弃的Plaggic Glossic Retisol(Siltic,Cutanic)站点的形态和理化特性,以及一个Gtagic Stagnic Retisol(Siltic,Cutanic)作为对照。森林土壤参与农业利用会导致有机层退化,直到活跃的农业利用终止数十年后,有机层才能恢复。耕地被保留下来,并在土地被弃置85年后被清晰地识别出来。在所有地点确定了坡度和坡度以下层的形态特征。与背景土壤相比,废弃了7年和19年的地点的土壤显示出较低的酸度和较高的碱饱和度。废弃地点的碳总存量较低。土壤被抛弃后,碳储量的缓慢增长是由于有机碳和表土矿物层中碳的增加所致。与对照和85年的森林土壤相比,被废弃7年和19年的土壤所含的水和水分形式的C和N含量要少。农业用途导致森林土壤碳储量减少。农后土壤中的固碳速率估计为30–40 g·m 农业用途导致森林土壤碳储量减少。农后土壤中的固碳速率估计为30–40 g·m 农业用途导致森林土壤碳储量减少。农后土壤中的固碳速率估计为30–40 g·m-2 ·yr -1
更新日期:2018-02-05
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