Dataset of Soil Nutrient Grading in Northeast China (1979-1990)

a. Data content (data file/table name, including observation index content)

Data file name: Northeast Region Soil Nutrient Grading Dataset (1979-1990)

Includes 1 table: Excel

(1) Soil nutrient classification dataset

It includes indicators such as area, organic matter, total nitrogen, available phosphorus, available potassium, and calcium carbonate.

b. Construction purpose

Provide data services for the study of nutrient cycling in farmland soil in the black soil area of Northeast China.

c. Service recipients

Engaged in research, management, and research personnel in related disciplines such as soil science.

d. Time range of data

The data collection period is from 1979 to 1990

e. The spatial range and projection method of data

Northeast region