Natural forests conversion to intensively managed forest plantation is an expanding land-use change that could profoundly impact C and nutrient terrestrial cycles. Here we assessed how different soil types respond to changes in the C, N, and P major biogeochemical pools by comparing paired natural broadleaf deciduous forest and pine plantation across five different soils with contrasting mineralogy. We quantified major biogeochemical stocks in all soil compartments to a depth up to 240 cm, including the forest floor. Our result showed that soils' C, N, and P stocks and stoichiometry do not respond equally to this land-use change. Deep soil biogeochemical pools (120–240 cm) contributed substantially to the total soil stock in most sites (up to 40% for C, 47% for P, and 52% for P). Elemental depth distribution was significantly modified because of forest substitution, and some sites displayed a significant stock reduction in deep soil compartments (>120 cm). Whole mineral soil C and N stocks were generally lower in the planted forest, while these stocks in litter layers were significantly different between soil and forest types (p < 0.001). C and N stocks in soils with low clay content or low activity clays were more significantly affected by forest substitution. On the other hand, soils with moderate to high clay content and dominant high activity clay were only mildly affected by this change. Phosphate and ammonium available pools were more affected in low activity and low clay content soil. P pools, and consequently C:P and N:P ratios in mineral soils, vary significantly between soil types. Our results corroborate that soils with contrasting properties respond differently to native forest substitution to intensively managed plantations and that the magnitude of this response seems to be controlled mostly by clay mineralogy.

天然林向集约经营的人工林转变是一种不断扩大的土地利用变化，可能会深刻影响碳和养分的陆地循环。在这里，我们通过比较五种不同土壤中成对的天然阔叶落叶林和松树人工林与不同的矿物学，评估了不同土壤类型对C，N和P主要生物地球化学池变化的响应。我们对包括土壤层在内的所有土壤区室的主要生物地球化学储量进行了定量分析，最大深度达240厘米。我们的结果表明，土壤的碳，氮和磷储量和化学计量对这种土地利用变化的反应不同。在大多数地点，深层土壤生物地球化学池（120-240 cm）对土壤总储量有很大贡献（C占40％，P占47％，P占52％）。由于森林的替代，元素深度分布发生了显着变化，并且某些站点在深层土壤隔室（> 120 cm）中显示出明显的种群减少。人工林中的总体矿质土壤碳和氮储量通常较低，而凋落物层中的这些储量在土壤和森林类型之间差异显着（p <0.001）。低粘土含量或低活性粘土的土壤中的碳和氮储量受森林替代的影响更大。另一方面，中等至高粘土含量和占主导地位的高活性粘土的土壤仅受到这种变化的轻微影响。在低活性和低粘土含量的土壤中，磷酸盐和铵的有效库受到更大的影响。在不同的土壤类型中，矿物质土壤中的磷库以及因此的C：P和N：P比率差异很大。