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NPP Temperate Forest: Great Smoky Mountains, Tennessee, USA, 1968-1992, R1

Data Set Overview

Data setNPP Temperate Forest: Great Smoky Mountains, Tennessee, USA, 1968-1992, R1
Release date2013-09-03
ProjectNet Primary Productivity (NPP)
Time Period1947-01-01 to 1992-12-31


This data set contains two data files (.csv format). One file contains site characteristics, stand descriptors, and above-ground biomass and ANPP data for seven old-growth temperate forest stands and one young cove forest stand in the Great Smoky Mountains of Tennessee. The old-growth stands (> 200 years old) span several watersheds on the north slope of the mountains at elevations ranging from 720 to 1,140 m. The younger stand (48-63 years old, elevation 910 m) developed after agricultural abandonment. The second file contains monthly mean climate data averaged over four years (1947-1950) from four climate stations located along an elevational gradient (445-1,920 m) in Great Smoky Mountains National Park. DBH measurements were made at the beginning of the study and biomass increment was measured from a subset of trees. ANPP was estimated using regional species-specific allometric relationships for tree mass. Biomass, volume, and annual input of coarse woody detritus are also reported. Live biomass in the old-growth stands (32,600-47,100 g/m2) is among the highest reported for temperate forests of eastern North America while ANPP is moderate (630-1,010 g/m2/yr). ANPP in the younger stand was higher (1,180-1,310 g/m2/yr). In comparison with forests worldwide, inputs of coarse woody debris is moderate. Revision Notes: Previously reported field collection dates have been corrected in the NPP file. Biomass and ANPP values were converted from Mg/ha and Mg/ha/yr to g/m2 and g/m2/yr, respectively, consistent with units in other files in the NPP collection. Please see the Data Set Revisions section of this document for detailed information.


Data set reference document


Busing, R.T. 2013. NPP Temperate Forest: Great Smoky Mountains, Tennessee, USA, 1968-1992, R1. ORNL DAAC, Oak Ridge, Tennessee, USA.
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Net Primary Productivity (NPP): NPP (net primary production) data from existing field measurements are being compiled for approximately 100 study sites covering several major world ecosystem types. These data are used by global change modelers to develop and validate models of vegetation-soil-atmosphere interactions within the global carbon cycle and to help calibrate remote sensing of vegetation worldwide

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  • NPP_GSM.pdf

Data Files

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Data File (Granule)File SizeDatesLatitudeLongitude
GSM_NPP_r1.csv 3.9 KB 1968-01-01 - 1992-12-31 35.74N To 35.68N83.28W To 83.46W
CLIMGSM1.csv 171.1 KB 1947-01-01 - 1950-12-31 36.00N83.00W


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