Replication data for : Allochthonous material originating from saprolite as a marker of termite activity in Ferralsols

The data analyzed in this study pertains to Ferralsols sampled from the Brazilian Central Plateau. These soils are located within two distinct geomorphological regions: the Late Tertiary South American Surface and the Late Quaternary Velhas Surface, each characterized by specific topographical and soil properties. Geomorphological and Soil Context 1. Late Tertiary South American Surface: This surface corresponds to tablelands with altitudes generally between 900 and 1200 meters. The dominant soil type in this region is gibbsitic-sesquioxidic Ferralsols. 2. Late Quaternary Velhas Surface: Positioned 5 to 25 meters below the South American Surface, this area features a moderate slope and is predominantly covered by kaolinitic-non-sesquioxidic Ferralsols. Soil Types and Classification The Ferralsols under investigation are classified based on their morphological and mineralogical properties according to the World Reference Base for Soil Resources (WRB). These include: Orthic Ferralsols: F2, F5, and F7 Rhodic Ferralsols: F1, F6, F8, F9, and F10 Xanthic Ferralsol: F3 Plinthic Ferralsol: F4 These soils were sampled from locations either on the South American Surface (samples BF2 to BF4) or the Velhas Surface (samples BF1, BF5, and BF6), as detailed in previous studies [23, 47].

本研究分析的数据采自巴西中央高原的铁铝土（Ferralsols）。这些土壤分布于两个截然不同的地貌区域：晚第三纪南美地表（Late Tertiary South American Surface）与晚第四纪韦拉斯地表（Late Quaternary Velhas Surface），二者均具备独特的地形与土壤属性。

### 地貌与土壤背景
1. 晚第三纪南美地表：该地表为海拔普遍介于900米至1200米的台地，此区域的优势土壤类型为三水铝石-倍半氧化物型铁铝土（gibbsitic-sesquioxidic Ferralsols）。
2. 晚第四纪韦拉斯地表：该区域较南美地表低5至25米，坡度中等，主要被高岭石-非倍半氧化物型铁铝土（kaolinitic-non-sesquioxidic Ferralsols）覆盖。

### 土壤类型与分类
本研究所涉及的铁铝土依据其形态与矿物学特性，参照《世界土壤资源参比基础》（World Reference Base for Soil Resources, WRB）进行分类，具体类型及对应样本如下：
- 正常铁铝土（Orthic Ferralsols）：F2、F5与F7
- 红化铁铝土（Rhodic Ferralsols）：F1、F6、F8、F9与F10
- 黄色铁铝土（Xanthic Ferralsol）：F3
- 网纹铁铝土（Plinthic Ferralsol）：F4

上述土壤样本分别采自南美地表（样本BF2至BF4）与韦拉斯地表（样本BF1、BF5与BF6），相关采样细节已在既往研究文献[23, 47]中详细阐述。