“一带一路”地区65国30弧秒分辨率土壤可蚀性因子（2021年）

“一带一路”地区65国土壤可蚀性因子（K）数据集，基于国际土壤信息参比中心（International Soil Reference and Information Centre, ISRIC）网站（https://files.isric.org/soilgrids/latest/data/）下载的7.5弧秒分辨率土壤属性数据计算，所用数据包括土壤黏粒含量（%）、粉粒含量（%）、砂粒含量（%）、土壤有机碳含量（g/kg）、土壤质地类型。利用Wischmeier(1978)在USLE手册第二版中提出的土壤可蚀性因子算法、利用土壤可蚀性因子计算工具（K_Tool），计算得到与输入数据分辨率（30弧秒，尺度地区约1000m）相同分辨率的土壤可蚀性因子图。“一带一路”地区65国土壤可蚀性因子数据，是基于CSLE进行土壤侵蚀速率计算的必备数据，同时也是分析泛“一带一路”地区65国土壤特征的基础数据。Soil Erodibility Factor (K) Dataset for 65 Countries in the Belt and Road Region. This dataset was calculated based on 7.5 arc-second resolution soil attribute data downloaded from the official website of the International Soil Reference and Information Centre (ISRIC) (https://files.isric.org/soilgrids/latest/data/). The input data includes clay content (%), silt content (%), sand content (%), soil organic carbon content (g/kg), and soil texture type. The soil erodibility factor algorithm proposed by Wischmeier in the 2nd edition of the Universal Soil Loss Equation (USLE) manual in 1978 and the soil erodibility factor calculation tool (K_Tool) were used to generate soil erodibility factor maps with the same resolution as the input data (30 arc-seconds, with each pixel corresponding to approximately 1000m at the regional scale). This soil erodibility factor dataset for 65 countries in the Belt and Road region is a mandatory dataset for calculating soil erosion rates based on the Chinese Soil Loss Equation (CSLE), and also serves as a fundamental dataset for analyzing soil characteristics of the 65 countries in the broader Belt and Road region.

搜集汇总

背景与挑战

背景概述

该数据集提供了2021年“一带一路”地区65个国家土壤可蚀性因子（K）的空间分布，分辨率为30弧秒（约1000米）。它基于国际土壤信息参比中心（ISRIC）的土壤属性数据，采用Wischmeier（1978）算法计算生成，主要用于支持土壤侵蚀速率评估和区域土壤特征分析，是水土保持学领域的基础数据。