1: 2 million soil available iron distribution dataset in Heilongjiang Province (1990)

Data content (data file/table name, including observation index content) Data File Name: Heilongjiang Province 1:200000 Soil Effective Iron Distribution Dataset (1990) b. Construction purpose Provide a complete introduction to the graph and a detailed explanation of the processing process and key definitions of the vector graph, which is convenient for users involved in the comprehensive management of terrestrial ecosystem research. c.

Service object This database is suitable for scientific and technological workers engaged in research on terrestrial ecosystems, soil fertility changes, land use, and other related fields, as well as for government decision-making departments. d. Time range of data The data was completed in 1990. e. The spatial range and projection method of data Space scope: Heilongjiang Province