ARCSS058: Canopy Foliage Area Index, Toolik Lake, Alaska, 1995 and 1996
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Steven Oberbauer, Florida International University 

Leaf Area Index (LAI) information was collected at the Toolik Lake Field 
Station during the summers of 1995 and 1996 from plots located on the east- 
facing slope above the entrance stream to the lake. Included are the 
following parameters: Julian day, treatment, plot number, sample size, 
mean LAI (m2/m2) and standard deviation. Treatments were control, snow 
removal, and snow removal plus soil heating. Soil heating was done at 
10 cm depth using greenhouse cold frame heating cables, and plots were 
heated 2 hours per day. Six replicates of each treatment were set up in 
randomized blocks located 3 m apart. Each 1.5m x 1.5m plot was analyzed 
5 times over the growing season. In 1995, snow was removed from the plots 
on May 3 and May 12, with subsequent soil heating beginning on May 12. 
In 1996, snow was removed from the plots on May 3, and soil heating started 
on May 5. Measurements were made with a Li-Cor LAI-2000. 

Data files are in both ASCII (cnpyfoli95.dat, cnpyfoli96.dat) and MS Excel 
(cnpyfoli95.xls, cnpyfoli96.xls) formats.