Seed rain and soil seed bank of Picea asperata Mast. in subalpine coniferous forest of western Sichuan,China

doi:10.1080/11263500701627406

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 生态研究

	Seed rain and soil seed bank of Picea asperata Mast. in subalpine coniferous forest of western Sichuan,China
	Yin, H. -J.1,3; Liu, Q.1; He, H.2
刊名	PLANT BIOSYSTEMS
	2007-11
卷号	141 期号:3 页码:314-322
关键词	Picea asperata germination natural regeneration plantations subalpine coniferous forest
ISSN号	1126-3504
DOI	10.1080/11263500701627406
产权排序	1
文献子类	Article
英文摘要	Dragon spruce (Picea asperata Mast.) is widely planted on clear-cuts from natural subalpine coniferous forests in western Sichuan. To assess the natural regeneration potential of this species in spruce plantations of different ages, field studies on the seed rain, seed bank, and seedling recruitment were conducted in 20-year, 30-year, and 60-year plantations, and in a retained natural forest ca. 150 years old for comparison. Moreover, a series of temperature and light regimes were also designed in March 2003 to test germination/dormancy responses of the P. asperata seeds to different conditions. In the plantations considered, both the densities of seed rain and soil seed bank increased with increasing stand age, whereas they were both low beneath the natural forest partially due to low adult density of P. asperata adult trees. P. asperata has a transient seed bank, and ca. 60% of seeds were found in the litter layer. Seed decay and seed predation were the two most important factors affecting soil seed bank dynamics, which caused a number of seed losses from the soil. Only a small fraction germinated and produced seedlings, and the indices of the losses from the seed bank via germination in the 30-year plantation, 60-year plantation and natural forest were 4.75, 5.10, and 2.80%, respectively. High seedling mortality was observed after seedling emergence, and most of the germinated seedlings died out within one growing season. The P. asperata seeds showed a high percent germination and no significant differences under most light and temperature regimes except for full sunlight or temperature below 5 degrees C. In conclusion, despite a substantial number of seed produced, the high depletion of soil seed, the low seedling output, and high seedling mortality may obscure the natural regeneration potential of this tree species.
学科主题	Plant Sciences
URL标识	查看原文
WOS关键词	NATURAL REGENERATION ; BOREAL FOREST ; SCOTS PINE ; CLEAR-CUT ; PATTERNS ; GROWTH ; RECRUITMENT ; GERMINATION ; EMERGENCE ; FLOOR
WOS研究方向	Plant Sciences
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000252341900004
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29943]
专题	生物多样性与生态系统服务领域_生态研究
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Ctr Ecol Res, Chengdu 610041, Peoples R China; 2.Chongqing Normal Univ, Dept Biol, Chongqing, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China;
推荐引用方式 GB/T 7714	Yin, H. -J.,Liu, Q.,He, H.. Seed rain and soil seed bank of Picea asperata Mast. in subalpine coniferous forest of western Sichuan,China[J]. PLANT BIOSYSTEMS,2007,141(3):314-322.
APA	Yin, H. -J.,Liu, Q.,&He, H..(2007).Seed rain and soil seed bank of Picea asperata Mast. in subalpine coniferous forest of western Sichuan,China.PLANT BIOSYSTEMS,141(3),314-322.
MLA	Yin, H. -J.,et al."Seed rain and soil seed bank of Picea asperata Mast. in subalpine coniferous forest of western Sichuan,China".PLANT BIOSYSTEMS 141.3(2007):314-322.