Harvard Forest

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Chronic N Green Foliage

• HF-ID: HFS1988-04
• Category: Research Samples
• Creator:
  • Aber, John D.

• Date: 1988, 1989, 1991, 1992, 1993
• Location: Prospect Hill Tract (Harvard Forest)
• Media: Samples - litter
• Contents:
  • Green foliage. 1 box.

• Keywords: nitrogen
• Abstract:
  • Fresh leaf samples were collected during the first week of August. Needle samples from 20 different red pines in each pine plot were pooled into 5 samples for analysis. Oak, red maple and black birch were sampled in the hardwood plots. A total of four composite samples per species were collected in each plot, with each sample including leaves from the upper canopy, mid-level and understory. Red oak and black oak were combined and labeled as black oak. Samples were dried, ground and scanned for percent nitrogen, lignin and cellulose using an NIRSystems near infrared spectrometer.

• Related Items:
  • HF Data Archive: HF008 Chronic Nitrogen Amendment Experiment at Harvard Forest since 1988

• Archives Location: Sample Archive, Bay 1, stack 1, shelf 1
• Access: Active
• Administrative Notes:
  • 2022-10-14 It appears that HFS 1988-02, HFS 1989-01, HFS 1991-04 and HFS 1992-05 were reboxed into this collection, circa 2016