2026-10-15T00:38:46Z https://www.scidb.cn/oai

10.57760/sciencedb.IGA.00574 2023-10-12T16:06:56Z

2023-10-12 1:250000 Road Distribution Dataset in Heilongjiang Province (2013) doi:10.57760/sciencedb.iga.00574 en a. Data content (data file/table name, including observation index content) Data File Name: 1:250000 Road Distribution Dataset in Heilongjiang Province (2013) Main content: This dataset reflects the distribution of roads in Heilongjiang Province, mainly including highways, national roads, provincial roads, and other roads. Contains four data entities: Heilongjiang Province 1:250000 Road Distribution Dataset (2013) - Expressway. shp Heilongjiang Province 1:250000 Road Distribution Dataset (2013) - National Highway. shp Heilongjiang Province 1:250000 Road Distribution Dataset (2013) - Provincial Highway. shp Heilongjiang Province 1:250000 Road Distribution Dataset (2013) - Other Roads. shp b. Construction purpose To provide data services for studying agricultural ecological changes, farmland sampling design, and the impact of road distribution on agricultural production. c. Service object Students and researchers engaged in agricultural ecology and cartography research. d. Time range of data The data source was in 2013. e. The spatial range and projection method of data Space scope: Heilongjiang Province Heilongjiang Province; Road Distribution; 2013 杜书立 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank