Permanent Sample Plots

Between 1931 and 1947 permanent sample plots (PSPs) with individually numbered trees were established in the Duke Forest; in addition, plots were established in the Hill Experimental Forest. Today 37 of these plots remain extant. These plots have been recensused at roughly 5-year intervals since establishment. During remeasurements we map and record the diameter and height of all trees over 1 cm dbh, including new ingrowth. These plots cover approximately 4 ha of forest and currently contain nearly 11,000 mapped and measured trees.

Original documentation of these plots can be found at http://labs.bio.unc.edu/Peet/PEL/df/pspdocumentation.zip
plotdownloadmetadatayears sampledtimes sampledinitial age plot area (m2)
*=increased plot size after initial establishment		 initial stemsinitial stems still livingstems currently alive
Successional Pine Plots
D4 csv metadata1933 - 2000149101232334211
D5 csv metadata1933 - 20001591012*36834310
D6 csv metadata1933 - 2000149101220742253
D7 csv metadata1933 - 2000149101221737184
D12csvmetadata1933 - 1997148405251691
D13csvmetadata1933 - 20001484055014149
D14csvmetadata1933 - 2000148405516134
D15csvmetadata1933 - 20001484057917121
D16csvmetadata1933 - 2000148405811388
D17csvmetadata1933 - 200014840514816125
D18csvmetadata1933 - 200014840518613121
D19csvmetadata1933 - 20001484052367151
D20csvmetadata1933 - 200014840526115149
D21csvmetadata1933 - 200014840543115123
D22csvmetadata1933 - 2000148405511898
D23csvmetadata1933 - 2000148405117220205
D23csvmetadata1933 - 200014840535720205
D24csvmetadata1934 - 20001419101232455288
D25csvmetadata1934 - 20001419101212537217
D26csvmetadata1934 - 20001419101233165165
D28csvmetadata1934 - 2000141581046331320
D29csvmetadata1934 - 2000141581022726234
D39csvmetadata1934 - 2000121581019714210
D40csvmetadata1934 - 2000121581047529138
D41csvmetadata1934 - 2000121581043014138
D42csvmetadata1934 - 2000121581027231145
D49csvmetadata1936 - 20001330101229232210
D50csvmetadata1936 - 20001330101231130265
D51csvmetadata1936 - 19971130101212716125
Uneven-aged Hardwood Plots
D10csvmetadata1933 - 200013mix1012*31945257
D35csvmetadata1934 - 200011mix101218661431
D36csvmetadata1934 - 200012mix1012*14533689
D37csvmetadata1934 - 200012mix1012*9617662
D43csvmetadata1935 - 200012mix1012*23043182
D44csvmetadata1935 - 200011mix1012*23738172
H23csvmetadata1946 - 200113mix4047419114905
H24csvmetadata1947 - 200113mix40474481261098
H25csvmetadata1947 - 200113mix4047363111113
Plots no longer monitored
D1csv metadata1933 - 19637803636
D2csv metadata1933 - 196381385353
D3csv metadata1933 - 19637337198242
D8csv metadata1933 - 196581656669
D9csv metadata1933 - 196581375672
D11csv metadata1933 - 19556573139141
D27csv metadata1934 - 197892303232
D30csv metadata1934 - 196482124242
D31csv metadata1934 - 196481254545
D32csv metadata1934 - 19841114629511
D33csv metadata1934 - 19841012618779
D34csv metadata1934 - 19504166136137
D38csv metadata1934 - 19616270132132
D45csv metadata1935 - 19453676262
D46csv metadata1935 - 19453504545
D47csv metadata1935 - 19453715959
D48csv metadata1935 - 19453202020
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