气候变化领域集成服务门户(CCPortal): Soil seed bank and its relation with above-ground vegetation along the degraded gradients of alpine meadow

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DOI	10.1016/j.ecoleng.2016.01.067
	Soil seed bank and its relation with above-ground vegetation along the degraded gradients of alpine meadow
	Shang, Zhanhuan; Yang, Shihai; Wang, Yanlong; Shi, Jianjun; Ding, Luming; Long, Ruijun
通讯作者	Shang, ZH (通讯作者)
发表日期	2016
ISSN	0925-8574
EISSN	1872-6992
起始页码	268
结束页码	277
卷号	90
英文摘要	Degradation of alpine meadow may change the composition and size of the soil seed bank, which will impact on the seed bank's capacity for restoration. Four plots were selected to represent the degradation gradients of alpine meadow on Tibetan plateau, namely normal meadow, lightly-degraded meadow, moderately-degraded meadow, and severely-degraded meadow. Soil cores were collected in two seasons, November of 2004 (after seed dispersal) and April of 2005 (before seedling emergence). Soil seed banks were examined by a seedling emergence method. Totals of 56 and 57 species were identified from soil seed bank of four plots in November and April, respectively. The mean size of the soil seed bank on the four plots varied between 2662 and 8026 seeds m-2 in November, and between 3744 and 9773 seeds m-2 in April. The difference in soil seed bank size between the two sampling times (November and April) was not significant within plots. Soil seed banks and above-ground vegetation presented the same trend with vegetation succession across the differently degraded meadows. In all plots, hemicryptophytes accounted for the majority of species and produced the largest number of seeds, of which the majority was weeds. In degraded meadows, the significant increase in weeds (species richness, plant density) changed species composition of soil seed bank and above-ground vegetation along degrading trend. The soil seed bank has important implications for vegetation succession and the restoration of species-diverse alpine meadow on the Tibetan plateau. (C) 2016 Elsevier B.V. All rights reserved.
关键词	QINGHAI-TIBETAN PLATEAU GRASSLAND SOILS MANAGEMENT DIVERSITY DYNAMICS WETLANDS CARBON LAND
英文关键词	Ecological restoration; Grassland management; Seed bank dynamics; Vegetation regeneration
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Engineering
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000373376700033
来源期刊	ECOLOGICAL ENGINEERING
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258712
推荐引用方式 GB/T 7714	Shang, Zhanhuan,Yang, Shihai,Wang, Yanlong,et al. Soil seed bank and its relation with above-ground vegetation along the degraded gradients of alpine meadow[J]. 中国科学院青藏高原研究所,2016,90.
APA	Shang, Zhanhuan,Yang, Shihai,Wang, Yanlong,Shi, Jianjun,Ding, Luming,&Long, Ruijun.(2016).Soil seed bank and its relation with above-ground vegetation along the degraded gradients of alpine meadow.ECOLOGICAL ENGINEERING,90.
MLA	Shang, Zhanhuan,et al."Soil seed bank and its relation with above-ground vegetation along the degraded gradients of alpine meadow".ECOLOGICAL ENGINEERING 90(2016).