2026-10-14T23:41:13Z https://www.scidb.cn/oai

10.57760/sciencedb.IGA.00607 2023-10-16T16:10:34Z

2023-10-16 1:100000 Black Soil Resource Distribution Dataset in Heilongjiang Province (1980) doi:10.57760/sciencedb.iga.00607 en a. Data content (data file/table name, including observation index content) Data File Name: Heilongjiang Province 1:100000 Black Soil Resource Distribution Dataset (1980) Main content: Heilongjiang Province 1:100000 Black Soil Resource Distribution Dataset (1980) - Data Entity. shp b. Construction purpose This dataset mainly provides data support services for research on agricultural production and farmland fertility evaluation. c. Service object Students and researchers engaged in agricultural ecology and soil science research. d. Time range of data The data collection was completed in 1980. e. The spatial range and projection method of data Space scope: Heilongjiang Province Heilongjiang Province; Black Soil Resource Distributi; 1980 杜书立 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank