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tree census, Long-term permanent plot No.753706, Selection Cutting Examination Forest No.6 (compartment 201・203), Nakagawa Experimental Forest, Hokkaido, tree census in 1975
tree census, Long-term permanent plot No.763707, Selection Cutting Examination Forest No.07 (compartment 116), Nakagawa Experimental Forest, Hokkaido, tree census in 1976
tree census, Long-term permanent plot No.763707, Selection Cutting Examination Forest No.07 (compartment 116), Nakagawa Experimental Forest, Hokkaido, tree census in 1981
tree census, Long-term permanent plot No.763707, Selection Cutting Examination Forest No.07 (compartment 116), Nakagawa Experimental Forest, Hokkaido, tree census in 1986
tree census, Long-term permanent plot No.763707, Selection Cutting Examination Forest No.07 (compartment 116), Nakagawa Experimental Forest, Hokkaido, tree census in 1991
tree census, Long-term permanent plot No.763707, Selection Cutting Examination Forest No.07 (compartment 116), Nakagawa Experimental Forest, Hokkaido, tree census in 1996
tree census, Long-term permanent plot No.763707, Selection Cutting Examination Forest No.07 (compartment 116), Nakagawa Experimental Forest, Hokkaido, tree census in 2001
tree census, Long-term permanent plot No.763707, Selection Cutting Examination Forest No.07 (compartment 116), Nakagawa Experimental Forest, Hokkaido, tree census in 2011
tree census, Long-term permanent plot No.773708, Selection Cutting Examination Forest No.8 (compartment 132・133), Nakagawa Experimental Forest, Hokkaido, tree census in 1977
tree census, Long-term permanent plot No.773708, Selection Cutting Examination Forest No.8 (compartment 132・133), Nakagawa Experimental Forest, Hokkaido, tree census in 1982