中国高分辨率国家土壤信息格网基本属性数据集_90米土壤有机碳密度（2010-2018）

本数据是全国范围的土壤有机碳密度高分辨率空间分布图，水平空间分辨率为90m，垂直方向包括六个土层深度：0-5, 5-15, 15-30, 30-60, 60-100, 100-200cm。该数据集是基于近年“我国土系调查与《中国土系志》编制项目”获得的土壤剖面样点，采用预测性土壤制图范式，利用地理信息与遥感技术对成土环境条件进行精细刻画和空间分析，研发自适应深度函数拟合方法，集成先进的集合式机器学习方法，生成了中国高分辨率系列土壤属性三维数字分布图及其不确定性分布。与现有土壤图和相关土壤数据集相比，显著提高了准确性和精细度，更好地表征了我国土壤属性的空间变异特征，可广泛应用于土壤、农业、生态、水文、气候、环境等多个学科领域，也是对“全球土壤制图科学计划”（GlobalSoilMap.net）的重要贡献。This is a nationwide high-resolution spatial distribution dataset of soil organic carbon density, with a horizontal spatial resolution of 90 m. The vertical dimension includes six soil layer depths: 0–5, 5–15, 15–30, 30–60, 60–100, and 100–200 cm. Based on soil profile samples obtained from the recent "National Soil Series Survey and Compilation of the Soil Series of China" project, this dataset was developed using the predictive soil mapping paradigm. By leveraging geographic information and remote sensing technologies to conduct fine characterization and spatial analysis of soil-forming environmental conditions, an adaptive deep function fitting method was developed, and advanced ensemble machine learning methods were integrated to generate high-resolution three-dimensional digital distribution maps of a series of soil properties across China, along with their corresponding uncertainty distributions. Compared with existing soil maps and related soil datasets, this work significantly improves both accuracy and spatial resolution, better characterizes the spatial variability of soil properties in China, and can be widely applied to multiple disciplines including soil science, agriculture, ecology, hydrology, climatology, and environmental science. It also constitutes an important contribution to the Global Soil Mapping Scientific Initiative (GlobalSoilMap.net).

搜集汇总

背景与挑战

背景概述

该数据集是中国范围内2010-2018年的土壤有机碳密度高分辨率空间分布图，水平分辨率为90米，垂直方向覆盖0-200厘米的六个土层深度。它基于全国5000多个土壤剖面调查数据，采用预测性土壤制图范式和集合式机器学习方法生成，显著提高了空间准确性和精细度，适用于土壤学、农业、生态和环境等多个研究领域。