2026-10-12T09:20:08Z https://www.scidb.cn/oai

10.57760/sciencedb.IGA.00646 2023-10-20T16:20:27Z

2023-10-20 1:100000 Soil Total Nitrogen Spatial Distribution Dataset in Shuangcheng City, Heitu District (1980) doi:10.57760/sciencedb.iga.00646 en a. Data content (data file/table name, including observation index content) Data File Name: 1:100000 Soil Total Nitrogen Spatial Distribution Dataset in Shuangcheng City, Heitu District (1980) Main content: SCTN.shp b. Construction purpose This dataset mainly provides data support for the evaluation of soil fertility in black soil farmland. c. Service object Students and researchers engaged in soil science and ecology research, as well as government decision-making departments. d. Time range of data The data was collected in 1980. e. The spatial range and projection method of data Space scope: Shuangcheng City, Heilongjiang Province Shuangcheng City, Heitu Distri; Soil Total Nitrogen Spatial Di; 1980 杜书立 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank