黑河流域数字土壤制图产品：三维土壤砂粒含量分布数据集

按照全球数字土壤制图（GlobalSoilMap.net）标准，将0-1m土壤深度划分为0-5cm、5-15cm、15-30cm、30-60cm、60-100cm 5个层次，根据土壤-景观模型原理，使用数字土壤制图方法制作不同层次的土壤砂粒含量空间分布数据产品。土壤粒级划分标准使用美国制分类法。本数据集的源数据来源于黑河流域重大研究计划集成项目（黑河流域土壤数据集成与土壤信息产品生成，91325301）集成的土壤剖面数据。
范围：黑河流域；
投影：WGS_1984_Albers；
空间分辨率：100米；
数据格式：TIFF；
数据集内容：
hh_sand_layer1.tif：0-5cm 土壤砂粒含量；
hh_sand_layer2.tif：5-15cm 土壤砂粒含量；
hh_sand_layer3.tif：15-30cm 土壤砂粒含量；
hh_sand_layer4.tif：30-60cm 土壤砂粒含量；
hh_sand_layer5.tif：60-100cm 土壤砂粒含量；

Adhering to the standards of GlobalSoilMap.net, the 0–1 m soil depth is divided into five layers: 0–5 cm, 5–15 cm, 15–30 cm, 30–60 cm, and 60–100 cm. Based on the soil-landscape modeling principle, spatial distribution datasets of soil sand content for each layer were generated using digital soil mapping methods. The soil particle size classification follows the US system.
The source data of this dataset is derived from soil profile data integrated by the Integrated Project of Major Research Plan of the Heihe River Basin (Soil Data Integration and Soil Information Product Generation in the Heihe River Basin, Grant No. 91325301).

Dataset Specifications:
- Scope: Heihe River Basin
- Projection: WGS_1984_Albers
- Spatial Resolution: 100 m
- Data Format: TIFF

Dataset Files:
hh_sand_layer1.tif: Soil sand content of 0–5 cm layer
hh_sand_layer2.tif: Soil sand content of 5–15 cm layer
hh_sand_layer3.tif: Soil sand content of 15–30 cm layer
hh_sand_layer4.tif: Soil sand content of 30–60 cm layer
hh_sand_layer5.tif: Soil sand content of 60–100 cm layer