各省级行政区250米土壤类型栅格图（2018年）

本数字化土壤类型图是以全国第二次土壤普查资料各省级行政区1∶50 万土壤图和1:100万土壤图为基础，经过数字化、投影变换、矢量栅格转换、数据插值获得，并结合最新的土地利用数据进行了更新。该图采用土壤发生分类标准，反映了我国主要类型土壤及其分布规律，并概略地表示耕地土壤分布情况和全国各类土壤的利用方向。可作为编制全国土壤资源图和肥力图的基础，也可为土壤利用改良区划、农业区划、自然区划等提供科学依据，可供农林部门及科研、教学单位参考。

This digital soil type map is developed based on the 1:500,000-scale and 1:1,000,000-scale soil maps of each provincial-level administrative region from the Second National Soil Survey dataset. It is produced via digitization, projection transformation, vector-to-raster conversion and data interpolation, and updated using the latest land use data. Adopting the genetic soil classification standard, the map illustrates the major soil types in China and their spatial distribution rules, as well as roughly depicts the distribution of arable soils and the utilization directions of various soil types across the country. It can serve as the foundation for compiling national soil resource maps and soil fertility maps, and provide scientific evidence for soil utilization and improvement zoning, agricultural regionalization, natural regionalization and other relevant studies. Moreover, it can be referenced by agricultural and forestry departments, research institutions and educational institutions.

搜集汇总

背景与挑战

背景概述

该数据集是基于全国第二次土壤普查资料，通过数字化和更新处理生成的2018年中国各省级行政区土壤类型栅格图，分辨率为250米，采用土壤发生分类标准，反映了全国主要土壤类型及其分布规律。它结合了最新土地利用数据，可用于土壤资源制图、农业区划和科研教学参考，数据质量可靠，数字化误差小于5%。