中国土种数据库——基于第二次土壤普查的全国性土壤数据集

Soil Type Database of China:A nationwide soil dataset based on the Second National Soil Survey

来源于全国第二次土壤普查汇总成果的中国土种数据库是最全面的全国性的土壤数据资料。它覆盖了上世纪80年代我国主要土种的分布、面积、主要性状、土地利用和生产性能,具有2473个典型剖面、8751个发生层及物理化学性质。自2000年以来,中国科学院南京土壤所开始建设中国土种数据库,构造了一个包括地点与土壤类型分布关系和中国土壤发生分类的分类关系的E-R数据模型,形成了覆盖全国主要土种的数据产品。该数据库被广泛用于土地退化评估、环境影响研究、土壤碳储量研究,或作为土壤基础数据指导农业生产。

Derived from the Second National Soil Survey,Soil Type Database of China is the most comprehensive soil data resource on the national scale.It embodies the distribution,area,characters,land use and productive performance of most soil types throughout the country in the 1980s.The database contains 2,473 typical profiles,8,751 soil genetic horizons and the corresponding physico-chemical properties.The database was initiated by the Institute of Soil Science,Chinese Academy of Sciences(CAS)in 2000.Up to now,an entity-relationship(ER)data model has been built which contains soil type-location relationships and stratified classifications based on Genetic Soil Classification of China(GSCC),and the data products have been developed to cover most of soil types in China.The database can be widely used in land degradation assessments,environmental impact studies,and soil carbon reserves studies.It may also be used as basic data to guide agriculture production.