Details and Metadata

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Methods

The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures

Past Methods (No longer in use)

  • Twig and soil gas samples
    Started: 1995-06-09
    Ended: 1995-06-11

    Balsam fir twig samples and soil gas samples were collected at 5 different elevations along the Halfway House Trail. Foliage twigs from 20-30 foot height were collected and placed in glass vials. Two samples of ambient air were collected. The soil gas samples were taken using a battery-powered constant-volume type pump attached to a plastic tube and tenax-filled tube type trap with a stainless steel probe with small holes that was poked into soil at about 20 sm depth.

Dataset Fields

Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data


Field Name Caption Description Additional Information
elevelevation

Elevation (feet)

Measurement type: Interval
Units: feet
PKIDPKID

PKID

Measurement type: Nominal
TubeTube

Tube

Measurement type: Nominal
Location TypeLocation Type

''away'' means not directly under overhang of trees, ''under'' means directly under substantial tree canopy, ''ambient'' was air pulled directly from atmosphere at g [sic]

Measurement type: Ordinal
Lowest Chloroform CoLowest Chloroform Concentration

Lowest Chloroform Concentration

Measurement type: Ratio
Units:
Highest Chloroform CoHighest Chloroform Concentration

Highest Chloroform Concentration

Measurement type: Ratio
Units:

Sampling Equipment

Equipment and software used to collect data, including how that equipment was used.

Past Sampling Equipment (No longer in use)

  • Pole pruners, altimeter, traps, soil probe
    Started: 1995-06-09
    Ended: 1995-06-11

    Pole pruners. Altimeter. Tenax-filled traps attached to constant volume type pump and stainless steel soil probe.

Site Characteristics

The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection

  • Site Description

    West slope of Mt. Mansfield at five elevations: 2050, 2590, 3050, 3620, and 3850.