2026-10-10T17:08:44Z https://www.scidb.cn/oai

10.57760/sciencedb.IGA.00591 2023-10-13T16:19:16Z

2023-10-13 Dataset of 1:250000 Major Crop Planting Areas in Heilongjiang Province (1990) doi:10.57760/sciencedb.iga.00591 en a. Data content (data file/table name, including observation index content) Data File Name: Heilongjiang Province 1:250000 Main Crop Planting Area Dataset (1990) Main content: This dataset reflects the planting area of major crops (wheat, corn, soybeans, and rice) in Heilongjiang Province in 1990, measured by counties. The data type is vector data, which includes one data entity: Heilongjiang Province 1:250000 Main Crop Planting Area Dataset (1990) - Data Entity. shp. b. Construction purpose This dataset mainly provides data support for agricultural production and regional agricultural and socio-economic sustainable development. c. Service object Used by scientific and technological workers engaged in research on agricultural ecology, land use, and other related fields, also applicable to government decision-making departments. d. Time range of data The data is from 1990. e. The spatial range and projection method of data Space scope: Heilongjiang Province Heilongjiang Province; Major Crop Planting Areas; 1990 杜书立 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank