NEON Decommissioned Site data: Root sampling, chemistry, and isotopes (Megapit) from D04 MAME site

Root sampling (Megapit): This data product contains the quality-controlled, native sampling resolution data from NEON's belowground plant biomass sampled from the megapit. Soil samples were collected at 10 cm depth increments to the first 100 cm below the surface, then 20 cm depth increments thereafter, along three vertical profiles from a single temporary soil pit at a location expected to be representative of NEON sensor-based soil plots. This sampling activity is expected to occur once at each NEON terrestrial site. Additional belowground plant biomass samples collected from the same soil pit are archived and are available upon request. Root chemical properties and Root stable isotopes: This data product contains the quality-controlled, native sampling resolution data from NEON's measurement of carbon and nitrogen concentrations, and stable isotope values of carbon and nitrogen, in root biomass. Samples are collected once from a single deep (2 meter) pit in the vicinity of the NEON Tower and soil sensors in 10-20 cm depth increments. For soil pit sampling, roots are sieved, sorted into two size categories, and both live and dead roots are analyzed. If sufficient mass is present, additional root material is archived and available upon request.