Soil profile pits, carbon and vegetation data of an old Anogeissus grove in Mole National Park, Ghana

Formation of forest islands in West Africa has been linked to anthropogenic soil improvement resulting in luxuriant tree growth in otherwise open savanna landscapes. However, there is limited understanding of how such unique ecosystems modulate soil carbon (C) dynamics and nutrient cycling. In this study, we report soil nutrient characteristics and two distinct soil organic carbon pools of Anogeissus grove (forest island) associated with abandoned village sites of the Mole National Park in the Guinea savanna or tropical continental climatic zone of Ghana, taking opportunity of a previously published study in Biotropica in 1978. We compared present-day differences in soil characteristics between the previously studied forest grove and adjoining open savanna in the Park and evaluated vegetation dynamics since first measurement in 1974. Overall, we see changes related to self-thinning and expansion of the grove on a decadal timescale. Soil organic matter and available phosphorus contents w..., See Logah et al. (2024), Biotropica , , # Soil profile pits, carbon and vegetation data of an old Anogeissus grove in Mole National Park, Ghana

This datasets presented herein were collected as part of field work in an old Anogeissus grove on abandoned village sites in the Mole National Park of Ghana in 2016 and 2020.

Details of the datasets are adequately captured in the README file.

## Description of the data and file structure

The datasets in Supplementary file are in three parts as follows:

1\). Description of soil profiles in grove and savanna designated as grove profile pit 1, 2, and 3 and savanna profile pit.

2\). Number of trees (> 10 cm girth) of each species in each 10 m2 of the belt transect in the Mole National Park

3\). Computation of C/N ratios of different soil organic carbon and nitrogen fractions in the Mole National Park

C: N ratios means carbon to nitrogen ratios

The datasets in the Primary data (excel file) comprise tree measurements (including height and girth) and regeneration data:

1. T...

西非森林岛的形成与人为土壤改良活动密切相关，该改良过程可使原本开阔的稀树草原景观中出现繁茂的林木生长。然而，目前学界对这类独特生态系统如何调控土壤碳（C）动态与养分循环的认知仍较为有限。本研究依托1978年发表于《Biotropica》的一项既往研究，以加纳几内亚稀树草原（热带大陆气候区）摩尔国家公园（Mole National Park）内废弃村落遗址周边的榆绿木（Anogeissus）林岛（森林岛）为研究对象，报道了其土壤养分特征与两类独特的土壤有机碳库。本研究对比了该既往研究涉及的林岛与该公园内相邻开阔稀树草原的当代土壤特征差异，并评估了自1974年首次测量以来的植被动态。整体而言，我们观察到了与林岛自疏和十年尺度上的扩张相关的变化。土壤有机质与有效磷含量详见Logah等人（2024）发表于《Biotropica》的研究。# 加纳摩尔国家公园一处古老榆绿木林的土壤剖面坑、碳与植被数据

本数据集采集自2016年与2020年在加纳摩尔国家公园内废弃村落遗址的一处古老榆绿木林中开展的野外调查工作。

数据集的详细信息已完整收录于README文件中。

## 数据与文件结构说明

补充文件中的数据集包含三部分，具体如下：
1. 林岛与稀树草原的土壤剖面描述，分别命名为林岛剖面坑1、林岛剖面坑2、林岛剖面坑3以及稀树草原剖面坑。
2. 带状样带内每个10 m²样方中各树种的胸径（>10 cm）个体数量。
3. 摩尔国家公园内不同土壤有机碳与氮组分的碳氮比（C/N）计算结果。
注：C:N比即碳氮比

原始数据（Excel文件）包含林木测量数据（包括树高与胸径）与更新调查数据：
1. T...