Soil geochemistry and constraint of tree seedlings immediately after germination on Macrotermes termite mounds in the Kruger National Park, South Africa

Eighty composite samples (0-2 cm) were taken from treeless mounds and within adjacent savannas at a site ~20 km southwest of Skukuza Rest Camp (40 samples) and a site ~15 km northeast of Phalaborwa Gate in the Kruger National Park (40 samples) with permission from South African National Parks. Each composite sample comprised 8-10 sub-samples taken from ~100 cm2 within a plot of ~100 m2. The samples in savannas were taken outside of tree canopies. The distance between a mound and its paired adjacent savanna sampling area was a maximum of 20 m.Soil samples were air-dried and sieved to

在距Skukuza休息营地西南方向约20公里及东北方向约15公里的克鲁格国家公园内，分别从无树土丘及其相邻的草原区域采集了80个综合样本（0-2厘米）。其中，40个样本来源于前者，另外40个样本则来自后者，采集活动已获得南非国家公园的许可。每个综合样本由8-10个子样本组成，这些子样本均取自约100平方米样地内的100平方厘米区域。草原区域的样本采集均在树冠之外进行。土丘与其对应相邻草原采样区域之间的最大距离为20米。土壤样本经过自然晾干并过筛处理。