中国西北干旱区0-2米公里级土壤水力参数数据集

本数据集包含西北干旱区0-2m六个标准深度（0m,0.1m,0.3m,0.6m,1m,2m）的土壤水力参数，包括饱和含水量、残余含水量、饱和导水率、van Genuchten方程参数α、van Genuchten方程参数n、田间持水量、永久萎蔫点、植物有效水含量和大孔隙度，其中饱和含水量、残余含水量、饱和导水率、van Genuchten方程参数α、van Genuchten方程参数n是基于实测数据训练土壤传递函数，并应用SoilGrid250m数据集生产，其余土壤水力参数经二次计算所得。This dataset contains soil hydraulic parameters at six standard soil depths (0 m, 0.1 m, 0.3 m, 0.6 m, 1 m, 2 m) within 0–2 m in the Northwest Arid Region of China. The parameters include saturated water content, residual water content, saturated hydraulic conductivity, van Genuchten parameter α, van Genuchten parameter n, field capacity, permanent wilting point, plant available water content, and macroporosity. Specifically, saturated water content, residual water content, saturated hydraulic conductivity, van Genuchten parameter α and van Genuchten parameter n were generated by training soil transfer functions using in-situ measured data and applying the SoilGrid250m dataset, while the remaining soil hydraulic parameters were obtained through secondary calculations.

搜集汇总

背景与挑战

背景概述

该数据集提供了中国西北干旱区0-2米深度范围内的公里级土壤水力参数，包括饱和含水量、饱和导水率等关键指标，基于实测数据和机器学习方法生成。数据集发布于2023年，以栅格图像形式存储，适用于地球科学和土壤学领域的研究，支持公开下载使用。