To study the effect of anthropogenic cone picking on the seed bank and seedling bank of Korean pine (Pinus koraiensis) in the major forest types in Lesser Hing’an Mountains, mixed broad-leaved Korean pine forest, Korean pine plantation near the mixed broad-leaved Korean pine forest, Dahurian larch (Larix gmelini) plantation, white birch (Betula platyphylla) forest and spruce-fir forest were selected. In each of these forest types, sample belts with the size of 10 m×240 m were made to study the seed bank and seedling bank of Korean pine. The results showed: 1) The amount of Korean pine seed bank differed greatly with forest types. The largest amount of seed bank was shown in the mixed broad-leaved Korean pine forest, followed by the Dahurian larch plantation, spruce-fir forest, Korean pine plantation and white birch forest. 2) Seeds that were cracked or destroyed by rodents and other animals accounted for 81.9%-90.4% of the seed bank of those major forest types; intact seeds were only found in the mixed broad-leaved Korean pine forest and Dahurian larch plantation, with 4.3% and 4.9%, respectively. 3) Korean pine seeds were mostly distributed in the 0-10 cm soil layer (71.4%-91.3% of the seed bank of those major forest types). 4) The density of Korean pine seedling bank was the highest in Dahurian larch forest (1613 seedlings·hm-2), lowest in Korean pine plantation (167 seedlings·hm-2), Korean pine seedling density in the mixed broad-leaved Korean pine forest (293 seedlings·hm-2) and white birch forest (854 seedlings·hm-2) were 1/68-1/9 and 1/9-1/4.5 of the seedling bank before cone picking, respectively. 5) For the age class distribution, before cone picking, in the mixed broad-leaved Korean pine forest, the amount of Korean pine seedlings decreased as the age class increased, the age class distribution showed a reverse J-shaped distribution; in the white birch forest, density of the Korean pine seedlings was relatively the same in each of the age class. After cone picking, in the mixed broad-leaved Korean pine forest, density of the Korean pine seedlings was relatively the same in each of the age class; in the white birch forest, the age class distribution of Korean pine seedlings showed a reverse J-shaped distribution.
JIN Guang-ze, YANG Gui-yan, MA Jian-zhang, LI Lan-jun, XU Zheng-gang, ZHAO Xue, HONG Mei-jing
. Effect of Anthropogenic Cone-picking on Seed Bank and Seedling Bank of Korean Pine in the Major Forest Types in Lesser Hing’an Mountains[J]. JOURNAL OF NATURAL RESOURCES, 2010
, 25(11)
: 1845
-1854
.
DOI: 10.11849/zrzyxb.2010.11.004
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