The Heinz Center's State of the Nation's Ecosystems
ecosystem: Core National Indicators
indicator Name: Plant Growth Index: by ecosystem
page # in printed report: 56
location on page: upper
data source: U.S. Geological Survey; Multi-Resolution Land Characterization Consortium. Coverage: Lower 48 states.
notes: please see technical notes for further details on accessing these data from their original source; this data table comes from a specific graphic in The State of the Nation's Ecosystems report (www.heinzctr.org/ecosystems)

units: index--a value of 1.0 equals the 11-year average from 1989-2002
  Forests Grasslands/Shrublands Croplands All Three Systems
1989 1.08 1.16 1.07 1.10
1990 0.92 0.94 0.88 0.91
1991 0.86 0.86 0.90 0.87
1992 1.08 1.14 1.13 1.11
1993 1.16 1.42 1.17 1.25
1994        
1995 0.97 0.93 0.97 0.95
1996 0.94 0.85 0.98 0.92
1997 0.95 1.01 0.97 0.98
1998 0.97 1.02 0.88 0.95
1999 0.91 1.03 0.92 0.95
2000 0.89 0.90 1.02 0.94
2001 1.28 1.00 1.21 1.16
2002 0.99 0.73 0.91 0.88

Close Window