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首页> 外文期刊>Plant and Soil >Biogeochemical cycling of soil phosphorus during natural revegetation of Pinus sylvestris on disused sand quarries in Northwestern Russia
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Biogeochemical cycling of soil phosphorus during natural revegetation of Pinus sylvestris on disused sand quarries in Northwestern Russia

机译：俄罗斯西北部废弃采石场樟子松自然植被恢复过程中土壤磷的生物地球化学循环

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摘要

Quarrying causes severe degradation of soils and vegetation that can be recovered partially when the quarries are abandoned and re-colonised by plants. To understand the recovery of soil functionality and nutrient cycling, we studied the development of soil phosphorus pools during Scots pine (Pinus sylvestris) revegetation in a disused sand quarry in Northwestern Russia. Sites that had been developing for different times since abandonment were compared to the parent sand and an adjacent undisturbed forest. Phosphorus speciation in genetic horizons of soil profiles was determined by sequential fractionation and solution phosphorus-31 nuclear magnetic resonance spectroscopy. Rapid transformations in soil properties occurred in 40 years, with a marked decline in pH and an accumulation of organic matter. Phosphorus transformations were shaped by geochemical processes, with a rapid release of inorganic phosphorus from primary minerals and accumulation of organic phosphorus to concentrations exceeding those found in the undisturbed site. Adsorbed and/or precipitated phosphorus increased rapidly, despite few reactive mineral colloidal surfaces. Natural succession of Scots pine in post-mining landscapes promotes ecosystem restoration through the rapid re-establishment of the biogeochemical cycles of organic matter and phosphorus. This study provides an important example of biogeochemical phosphorus cycling during the initial stages of pedogenesis.
机译：采石导致土壤和植被严重退化，当采石场被废弃并由植物重新定殖时，可以部分恢复。为了了解土壤功能的恢复和养分循环，我们研究了俄罗斯西北部废弃采石场的苏格兰松（Pinus sylvestris）植被恢复过程中土壤磷库的发育。自遗弃以来已经发展了不同时期的土地与母砂和邻近的未受干扰的森林进行了比较。通过序贯分级分离和溶液磷31核磁共振波谱确定土壤剖面遗传视野中的磷形态。 40年以来，土壤特性发生了快速变化，pH值显着下降，有机物积累。磷的转化是通过地球化学过程形成的，无机磷从主要矿物质中快速释放出来，而有机磷的积累达到了不受干扰地点所发现的浓度。尽管几乎没有活性矿物胶体表面，但吸附和/或沉淀的磷迅速增加。开采后景观中的苏格兰松自然演替通过快速重建有机物和磷的生物地球化学循环，促进了生态系统的恢复。这项研究提供了一个重要的例子，在成岩作用的初期生物地球化学磷循环。

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