Maintain Spatial Heterogeneity, Maintain BiodiversityA Seed Bank Study in a Grazed Alpine Fen Meadow

doi:10.1002/ldr.2606

CORC > 武汉植物园 > 中国科学院武汉植物园

	Maintain Spatial Heterogeneity, Maintain BiodiversityA Seed Bank Study in a Grazed Alpine Fen Meadow
	Xu, Ling-xiang 1,2,4; Cao, Yu 1,2; Li, Wei 1,2; Cheng, Yu 1,2; Qin, Tong-chun 3; Zhou, Yuan-chang 4; Liu, Fan 1,2
刊名	LAND DEGRADATION & DEVELOPMENT
	2017-05-01
卷号	28 期号:4 页码:1376-1385
关键词	ANOSIM Bray-Curtis similarity disturbance vegetation Zoige
ISSN号	1085-3278
DOI	10.1002/ldr.2606
英文摘要	Wetland degradation is a source of anxiety and is more severe in cold regions than other areas. The soil seed bank acts as a propagule source for revegetation to affiliate the restoration of degraded wetlands. However, the effects of this approach are controversial and depend on the traits of the seed bank and its interactions with the environment. The seed bank in an alpine fen meadow was studied to determine its exact role in revegetation. The surveyed shore of a Tibetan lake, Gahai Lake, was divided into three sites under different levels of grazing pressure. Each site was separated into six transects along a water-depth gradient to collect soil cores to determine the pattern of biodiversity through a germination experiment in a greenhouse. After an analysis of heterogeneity-related diversity, partitioning of 58 discovered species indicated that 39.5 could be contributed to beta-diversity, which was mainly contributed to water depth. Overgrazing (0.607 sheep unit/acre, NovemberMarch) decreased seed bank diversity in many respects, especially through decreasing spatial heterogeneity and homogenizing biota. A lightly grazed, well-protected site had not only the highest beta-diversity and species abundance but also the highest inter-site species turnover rate compared with other sites under moderate grazing intensity. Despite the lack of target species, the seed bank serves as (i) a species-rich pool; (ii) an extant legacy seed source for sustaining heterogeneity and floristic diversity; and (iii) an ecological indicator, and its effect can be reinforced by appropriate grazing practices (multiple intensity) and hydrological modifications. Copyright (c) 2016 John Wiley & Sons, Ltd.
资助项目	National Key Research and Development Programme of China[2016YFA0601000] ; Three Gorges Follow-up Research Project[2013HXKY2-3]
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000401322900020
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1378]
专题	中国科学院武汉植物园
通讯作者	Zhou, Yuan-chang; Liu, Fan
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan 430074, Hubei, Peoples R China 3.China Inst Geoenvironm Monitoring, Beijing 100081, Peoples R China 4.Fujian Agr & Forestry Univ, Coll Crop Sci, Fuzhou 350002, Fujian, Peoples R China
推荐引用方式 GB/T 7714	Xu, Ling-xiang,Cao, Yu,Li, Wei,et al. Maintain Spatial Heterogeneity, Maintain BiodiversityA Seed Bank Study in a Grazed Alpine Fen Meadow[J]. LAND DEGRADATION & DEVELOPMENT,2017,28(4):1376-1385.
APA	Xu, Ling-xiang.,Cao, Yu.,Li, Wei.,Cheng, Yu.,Qin, Tong-chun.,...&Liu, Fan.(2017).Maintain Spatial Heterogeneity, Maintain BiodiversityA Seed Bank Study in a Grazed Alpine Fen Meadow.LAND DEGRADATION & DEVELOPMENT,28(4),1376-1385.
MLA	Xu, Ling-xiang,et al."Maintain Spatial Heterogeneity, Maintain BiodiversityA Seed Bank Study in a Grazed Alpine Fen Meadow".LAND DEGRADATION & DEVELOPMENT 28.4(2017):1376-1385.