Saprolite is the weathered rock below the soil and constitutes the least researched region of the regolith. The association between saprolithology and pedology can contribute to a better understanding of the whole regolith. The Triunfo massif in the state of Pernambuco (NE Brazil) is a natural laboratory suitable for the study of regoliths derived from crystalline rocks under a climate gradient, from the semiarid climate at the base to a humid climate at the top, due to an orographic effect of climate. In this work, we integrated pedology with saprolithology for a taxonomic description of three regolith profiles along the climate gradient in Triunfo massif to better understand the regolith properties. We evaluated the climate effect on the physical, chemical, and morphological properties in horizons and layers of regolith profiles (depth: 2.0 m). The results indicated that a) the integration of taxonomic systems and morphological description protocols of the soil and saprolites in field studies is possible and can contribute to studies on the properties of the whole regoliths, b) the most developed soils were described under wetter climates. However, the climatic gradient did not significantly influence the weathering degree of the saprolite layers below these soils, c) the greater depth and the Bt horizon in the soil under humid climate attenuated the weathering intensity in the underlying saprolite, resulting in saprolite layers with weathering degrees similar to those described in the regolith profile under the semi-arid climate, d) the weathering degree did not advance only from top to bottom, it also moved to zones of greater biological activity, resulting in preferential weathering of the saprolite structure in pedoplasmation zones, e) there is a need to correct the values of physical and chemical properties of the saprolite layers determined in fractions < 2 mm to mitigate the dilution effect, which overestimated by 317% the values of chemical and physical properties in the saprolite layers.

腐泥土是土壤下方的风化岩石，是风化层研究最少的区域。腐泥学和土壤学之间的关联有助于更好地了解整个风化层。伯南布哥州（巴西东北部）的 Triunfo 地块是一个天然实验室，适合研究气候梯度下结晶岩衍生的风化层，从底部的半干旱气候到顶部的潮湿气候，由于地形气候的影响。在这项工作中，我们将土壤学与腐泥学相结合，对沿 Triunfo 地块气候梯度的三个风化层剖面进行分类描述，以更好地了解风化层特性。我们评估了气候对风化层剖面（深度：2.0 m）的层位和层的物理、化学和形态特性的影响。结果表明，a) 土壤和腐泥土的分类系统和形态描述协议在实地研究中的整合是可能的，并且可以有助于研究整个风化层的特性，b) 在潮湿气候下描述了最发达的土壤。然而，气候梯度对这些土壤下方腐泥土层的风化程度没有显着影响，c) 潮湿气候下土壤中较大的深度和 Bt 层减弱了下伏腐泥土的风化强度，导致腐泥土层风化与半干旱气候下风化层剖面中描述的程度相似， d) 风化程度不仅从上到下推进，还移动到生物活动更大的区域，