AGROSITE

AGROSITE.doc

Explanation of agrosite.dat - measurements for 3 inventories (at ages 2, 3, 4) by each site.

The loblolly pine seedlings that were originally planted in 1998 were obtained from the International Paper Co. nursery in Bluff City, AR. The shortleaf pine seedlings that were originally planted in 1998 came from a nursery in Missouri that is operated by the Missouri Forest Commission. Seedlings replanted in 1999 came from the Arkansas Forest Commission’s Baucum nursery located in Little Rock.

Units: English

Variables: 14

Columns:

1. Site

Area One is clusters 1 thru 675 with an area of 9.33 acres for hay alleys and 3.59 acres

for the tree clusters

Area Two is clusters 676 thru 819 with an area of 1.79 acres for hay alleys and 0.77 acres

for the tree clusters

Area Three is clusters 820 thru 1230 with an area of 5.74 acres for hay alleys and 2.19

acres for the tree clusters

Area Four is clusters 1231 thru 1340 with an area of 1.52 acres for hay alleys and 0.59

acres for the tree clusters

2. Area - amount of acreage within each site.

3. Age - age of trees from seed. 1-0 genetically superior seedlings were planted. Shortleaf pine seedlings were obtained from a nursery in Missouri. The loblolly pine seedlings were obtained from . One complication is that during the first two years of this study, seedlings were replanted to replace seedlings that had died. Therefore cluster-level variables for age 3 may actually have some age 2 trees within their measurements, age 4 may have age 3 trees, etc.

4. Species - 0 is loblolly pine, 1 is shortleaf pine.

5. Avergld - The arithmetic mean ground-line diameter (in inches) by site.

6. Stdgld - standard deviation of the arithmetic gld by site.

7. Averdbh - The arithmetic mean diameter at breast height (in inches) by site.

8. Stddbh - standard deviation of the average DBH by site.

9. QMD - quadratic mean diameter (in inches) by site.

10. Arithht - The arithmetic total tree height (in feet) by site.

11. TPA - trees per acre by site. This was determined by summing all trees with total tree heights (all surviving trees had tree height measurements) within a site, and dividing by the area of each individual site.

12. Dbhtpa - number of trees per acre that have a Dbh.

13. SDI - stand density index (calculated using Dbhtpa rather than tpa).

14. BAA - Basal area per acre (calculated average basal area of trees with a DBH, and then multiplied this by Dbhtpa.)

Example:

4 2.11 4 0 1.61 0.53 0.61 0.20 0.64 6.3 73.0 64.0 0.59 0.14

4 2.11 4 1 1.36 0.51 0.46 0.17 0.49 4.8 89.1 55.9 0.33 0.07

Number of observations: 24