干旱区生态环境知识资源中心(Arid): Fine-scale characteristics of the boundaries between annual patches and perennial patches in a meadow steppe

Arid

DOI	10.1007/s10980-019-00805-y
	Fine-scale characteristics of the boundaries between annual patches and perennial patches in a meadow steppe
	Cao, Yonghong 1; Wang, Deli 1; Heino, Mikko 2; Li, Xincheng 1; Zhu, Hui 1; Liu, Jushan 1; Zou, Xuehui 1
通讯作者	Wang, Deli
来源期刊	LANDSCAPE ECOLOGY
ISSN	0921-2973
EISSN	1572-9761
出版年	2019
卷号	34 期号:4 页码:811-825
英文摘要	ContextBoundaries may have crucial influences on landscape patterns, processes, and dynamics. However, there is little understanding of mechanisms that govern changes in the location and composition of boundaries. At smaller scales, investigation of detailed soil and vegetation characteristics can clarify the linkages between soil properties and vegetation patterns.ObjectivesThe aims were to examine the relationship between vegetation patterns and soil properties, and to explore mechanisms that govern changes in the location and composition of boundaries.MethodsIn a 50-ha grassland fenced for more than 10years, where a recovery process had been initiated and annual grasses dominated in most saline-alkaline areas, we quantitatively characterized the spatial gradients across the visually identified physiognomic boundary between annual patches and perennial patches at a fine spatial scale.ResultsFine-scale vegetation and soil boundaries were well-defined and statistically characterized by a high rate of change compared to immediately adjacent areas. Plant characteristics were markedly influenced by soil properties. The alteration of salinity and alkalinity were the most important factors explaining the plant patterns across patch boundaries. Successional processes of colonization were involved in perennial encroachment in the annual patches.ConclusionsUnderlying soil properties primarily determine the plant patterns of the boundary; plant succession caused by interspecific competition is superimposed on the plant-soil feedback loop maintaining soil nutrient conditions. These processes alter the characteristics and locations of patch boundaries in response to changing disturbance regimes. Our findings offer insight into how boundaries may respond to changes in environmental conditions and drive landscape-level dynamics.
英文关键词	Boundary characteristic Patch Meadow steppe Saline-alkaline grassland Fine-scale study Plant-soil feedback
类型	Article
语种	英语
国家	Peoples R China ; Norway
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000467558400007
WOS关键词	PLANT-SPECIES DIVERSITY ; ALKALINE MIXED STRESSES ; SONGNEN PLAIN ; VEGETATION DYNAMICS ; LARGE HERBIVORES ; GRASSLAND ; SOIL ; FOREST ; GROWTH ; DESERT
WOS类目	Ecology ; Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217496
作者单位	1.Northeast Normal Univ, State Environm Protect Key Lab Wetland Ecol & Veg, Key Lab Vegetat Ecol, Minist Educ,Sch Environm, Changchun 130024, Jilin, Peoples R China; 2.Univ Bergen, Dept Biol Sci, Bergen, Norway
推荐引用方式 GB/T 7714	Cao, Yonghong,Wang, Deli,Heino, Mikko,et al. Fine-scale characteristics of the boundaries between annual patches and perennial patches in a meadow steppe[J]. Arizona State University,2019,34(4):811-825.
APA	Cao, Yonghong.,Wang, Deli.,Heino, Mikko.,Li, Xincheng.,Zhu, Hui.,...&Zou, Xuehui.(2019).Fine-scale characteristics of the boundaries between annual patches and perennial patches in a meadow steppe.LANDSCAPE ECOLOGY,34(4),811-825.
MLA	Cao, Yonghong,et al."Fine-scale characteristics of the boundaries between annual patches and perennial patches in a meadow steppe".LANDSCAPE ECOLOGY 34.4(2019):811-825.