兴安落叶松落叶量和幼苗发生动态的研究

›› 1993, Vol. 29 ›› Issue (4): 298-306.

• 论文及研究报告 • Previous Articles Next Articles

AMOUNT OF FALLING SEED AND SEEDLING OCCURRENCE DYNAMICS IN PRIMITIVE LARIX GMELINI FOREST

Xu Huacheng,Du Yajuan

Beijing Forestry University, Beijiag 100083;The Yellow River Water Resources Conservancy Committee,Zhengzhou 450003

Received:1992-07-23 Revised:1900-01-01 Online:1993-07-25 Published:1993-07-25

Abstract

Abstract: With field experiment method, the regeneration conditions of Larix gmelini in primitive old-growth forest are studied. In mast year, the falling seed in old-growth forest amounts to 300-1000 seeds/m², the rank of differentforest types is listed as follows Ass. Alnus mandshurica,L. gmelinii>Ass.Betula fruticosa, L.gmelini > Ass. Herbage,L. gmelinii>Ass. Ledum palustre,L. gmelini. The emergence of seedling occurs mainly in June,the death predo-minately in July. In August the seeding amount has little change. Theseedling survive shows following sequencs: Ass. Betula fruticosa, L. gmelini>Ass. Ledum palustre, L. gmelini>Ass. Alnus mandshurica, L. gmelini >Ass. Herbage, L. gmelini. This order is mainly determined by soil surefacemoisture. If soil moisture is higher, the seedling of L. gmelini occurs moreabundantly.

Key words: Larix gmelini, Forest type, Amount of falling seed, Seedling occurrence dynamics

Xu Huacheng;Du Yajuan. AMOUNT OF FALLING SEED AND SEEDLING OCCURRENCE DYNAMICS IN PRIMITIVE LARIX GMELINI FOREST[J]. , 1993, 29(4): 298-306.

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AMOUNT OF FALLING SEED AND SEEDLING OCCURRENCE DYNAMICS IN PRIMITIVE LARIX GMELINI FOREST

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