Helen City 1:250000 Grain Production Distribution Dataset (1990)
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下载链接：
https://www.scidb.cn/detail?dataSetId=DS_f4670db8f49d435ea14a23fe790e4e13
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资源简介：
a. Data content (data file/table name, including observation index content)
Data File Name: Hulun City 1:250000 Grain Yield Distribution Dataset (1990)
Main content: HlCereal1990- Data entity.shp
b. Construction purpose
This dataset mainly provides data support for the study of the evolution and degradation process of black soil quality.
c. Service object
Students and researchers engaged in research in soil science, agriculture, and agricultural ecology.
d. Time range of data
The data source was in 1990 and was produced in 2006.
e. The spatial range and projection method of data
Space scope: Hailun City, Heilongjiang Province
提供机构：
Science Data Bank
创建时间：
2023-11-06
