230 



TIMBER TRENDS IN THE UNITED STATES 



Sampling errors ' of estimates of commercial forest area and inventory volume in the United States, by 



region and State 





Commercial forest area 



Inventory volume 





Region and State 



Million 

 acres 



Percent sampling 

 error 



Billion 

 cubic 

 feet 



Percent sampling 

 error 



Date of 

 field work 





Total 



Per 



million 

 acres 



Total 



Per 

 billion 

 cu. ft. 





New England: 



Connecticut 



Maine 



Massachusetts 



New Hampshire 



2.0 

 17.2 

 3.3 

 4.9 

 .4 

 3.7 



2.2 

 .4 

 1.7 

 1.6 

 4.2 

 1.4 



3.1 

 1.6 

 3.1 

 3.4 



2.7 

 2,8 



1.5 

 17.9 

 2.0 

 4.7 

 .2 

 4.4 



4.9 

 1.4 

 3.7 

 3.4 



8.4 

 2.2 



5.6 

 5.9 



5.1 

 7.0 

 3.4 



4.8 



1953 

 1954-1958 

 1953-1954 

 1959-1960 



Rhode Island 



Vermont 



1953 

 1947-1948 



Total 



31.5 



.5 



2.5 



30.7 



1.1 



6.0 





Middle Atlantic: 



Delaware 



.4 



2.9 



2.1 



12.0 



15.1 



11.4 



4.9 



1.7 

 1.7 

 1.3 



.8 

 .7 



3.1 

 2.9 

 2.5 

 4.4 

 3.2 

 2.4 



.5 



3.7 



1.5 



14.1 



14.9 



11.9 



6.5 

 2.6 

 4.1 

 1.4 

 1.6 

 1.6 



4.5 

 4.1 

 6.1 

 4.6 

 5.3 

 5.3 



1957 



Maryland 



1950-1952 



New Jersey 



1955-1956 



New York. 



1947-1952 



Pennsylvania 



West Virginia 



1949-1954 

 1959-1961 



Total 



43.9 



.5 



3.4 



46.6 



.8 



5.6 





Lake States: 



Michigan 



Minnesota. _ __ _ 



19.1 



17.1 



.4 



.4 



15.4 



.3 



.5 



3.0 



1.5 



.3 



1.4 

 2.1 

 1.9 

 3.0 

 1.3 



12.5 



9.8 



.3 



.4 



8.9 



.6 

 1.0 

 3.5 

 7.9 



.4 



2.1 

 3.1 

 1.6 

 5.0 

 1.8 



1946-1957 

 1960-1962 



North Dakota 



1954 



South Dakota (E.) 



Wisconsin 



1935-1947 

 1950-1958 



Total.. 



52.4 



.2 



1.6 



31.9 



.4 



2.3 









Central States: 



Illinois. . . 



3.8 

 3.9 

 2.6 



1.7 



10.8 



15.0 



1.1 



5.1 



2.8 

 1.2 

 1.1 

 2.3 

 .9 

 1.6 

 3.5 

 1.0 



5.4 

 2.4 

 1.8 

 3.0 

 3.0 

 6.2 

 3.7 

 2.3 



2.3 

 3.4 

 1.7 

 1.2 

 8.7 

 5.0 

 .4 

 4.6 



3.2 

 1.6 

 3.3 

 4.6 

 1.3 

 1.8 

 7.6 

 1.5 



4.9 

 2.9 

 4.2 

 5.0 

 3.9 

 4.0 

 5.0 

 3.2 



1961-1962 



Indiana 



Iowa ... 



1949-1950 

 1953-1954 



Kansas 



Kentucky 



Missouri .... 



1954 2 

 1948-1951 

 1958-1960 



Nebraska 



1953-1955 



Ohio 



1951-1953 



Total . . 



44.0 



.7 



4.4 



27.3 



.7 



3.9 









Total, North 



171.8 



.2 



3.1 



136.5 



.4 



4.8 









South Atlantic: 



North Carolina . 



20.2 

 11.6 

 15.8 



.4 

 .5 

 .4 



1.8 

 1.7 

 1.6 



18.7 



8.1 



13.7 



1.2 

 1.7 

 1.5 



5.2 

 4.8 

 5.6 



1954-1962 3 



South Carolina 



Virginia 



1957-1958 

 1956-1957 







Total 



47.6 



.2 



1.7 



40.5 



.8 



5.2 









East Gulf: 



Florida 



18.5 

 26.3 



.5 

 .3 



2.2 

 1.5 



7.2 

 17.5 



2.0 

 1.1 



5.3 

 4.6 



1958-1959 



Georgia 



1959-1961 







Total 



44.8 



.3 



1.8 



24.7 



1.0 



4.8 









See footnotes at end of table. 



