Long term positioning observation dataset of biomass at Helen Station (1990-1994)

a. Data content (data file/table name, including observation index content)\n\nData File Name: Long term Localized Observation Dataset of Biomass at Helen Station (1990-1994)\n\nIt includes indicators such as planting density, biomass, plant height, stem diameter, node length, stem yield, breaking strength, bending resistance distance, leaf area, leaf area index, dry matter accumulation amount, dry matter accumulation intensity, ear length, thousand grain weight, yield, etc.\n\nb. Construction purpose\n\nStudy the aboveground biological conditions of different crops in black soil areas, and explore certain characteristics of water and nutrient balance in black soil farmland.\n\nc. Service object\n\nStudents, managers, and researchers engaged in research related to soil moisture and nutrient cycling in farmland\n\nd. Time range of data\n\nThe data was collected from 1990 to 1994\n\ne. The spatial range and projection method of data\n\nHelen's long-term positioning experimental station.