Table 4.

Relative brightness in some forests of Japan

Plant communities	Relative brightness in %
Pinus densiflora forest	28–37
Larix leptolepis forest	13–25
Under field layer of Sasa nipponica	1·5–2
Castanea crenata forest	13–22
Quercus crispula forest	7–14
Under field layer	1·4–4·6
Fagus crenata—Quercus crispula forest	8–20
Under field layer of Sasa oseana	0·5–2·5
Chamaecyparis obtusa forest	5–15
Cryptomeria japonica forest	5–8
Shiia cuspidata forest (Laurisilvae)	2·5–5
Abies firma forest	1·7–8
Phyllostachys nigra var. Henonis thicket
In summer	0·2–0·5
In winter	2·5–4