TY  - Data
T1  - A comprehensive China soil dataset of high-resolution microstructure, topographical characteristics and physical properties
A1  - yang xiaofan
DO  - 10.12072/ncdc.soil.db7639.2026
PY  - 2026
DA  - 2026-07-13
PB  - National Cryosphere Desert Data Center
AB  - Dataset accompanying the publication " A comprehensive China soil dataset of high-resolution microstructure, topographical characteristics and physical properties".  In this study, we present a novel 3D soil microstructure dataset that integrates high-resolution imaging data of soils across China (CHARM3D) with comprehensive measurements of topological and physical properties to quantitatively characterize soil morphological parameters. Thirty sampling sites were selected within the Chinese Ecosystem Research Network (CERN), including six major ecosystems: forests, grasslands, deserts, agricultural lands, wetlands, and lakes. A total of 120 soil samples representing diverse soil orders were collected, reconstructed using high-resolution X-ray computed tomography (XCT), and analyzed with advanced image processing techniques via ImageJ and Avizo software. Morphological parameters are consisted of topological characteristics that describe the geometry of pore networks, and physical parameters associated with soil functions, particularly permeability and connectivity. Topological features were extracted using ImageJ combined with pore network analysis, whereas permeability-related connectivity was simulated through pore-scale modeling. A case study analyzing representative soil samples from the six ecosystems demonstrates the usefulness of the dataset in providing key parameters for reactive transport modeling in soils, such as pore connectivity, permeability, porosity distribution, as well as in characterizing the impact of soil aggregation on flow transport. This dataset provides valuable insights into soil structure variation across ecosystems and serves as a critical resource for calibrating soil hydraulic models in regional studies. An overview of the dataset as well as further technical details are provided in the CHARM3D_Meta_Data.pdf file.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/59f77d6b-4a18-48f8-ab3d-cdcc9299680c
ER  -