干旱区生态环境知识资源中心(Arid): Linking phytogenic hillocks with plant ecological strategies in a desert steppe: Adaptation of Stipa breviflora to heavy grazing

Arid

DOI	10.1016/j.ecolind.2020.106564
	Linking phytogenic hillocks with plant ecological strategies in a desert steppe: Adaptation of Stipa breviflora to heavy grazing
	Liu, Wenting; Sun, Shixian; Wei, Zhijun
通讯作者	Wei, ZJ
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2020
卷号	117
英文摘要	The relationship between plants and phytogenic hillocks in arid ecosystems is receiving increasing attention. Although ecologists have explored the microsystem relationship between plant ecological strategies and phytogenic hillocks, the explanation is still ambiguous due to the lack of relevant information on desert grasslands under grazing disturbance. In the present study, a constructive species, Stipa breviflora (a perennial bunchgrass), was selected as the research object in a desert steppe in northern China to quantify plant traits (i.e., height, density, biomass, and seed production) in different growth phases and epiphytically phytogenic hillock traits (i.e., length, width, height, seed number, and soil nutrients) under heavy grazing (HG), moderate grazing (MG), and no grazing (NG). Immature S. breviflora formed phytogenic hillocks under HG treatment. The phenotypic characteristics of phytogenic hillocks were significantly related to the number of aggregated seeds. Furthermore, soil organic carbon, soil total phosphorus and soil total nitrogen increased at the beginning and subsequently decreased with an increase in the size of phytogenic hillocks (plant-growing soil). The livestock preference index was elevated in all phases under HG compared to MG. Plant height was significantly decreased under HG compared to MG and NG. Seed production showed no significant differences between HG and NG during the adult to aging phases. The results indicated that S. breviflora-derived hillocks support S. breviflora survival by providing a nutritious soil matrix while aggregating its seeds to ensure population regeneration. Moreover, S. breviflora adapted to HG by reducing height and increasing reproductive input, which induced livestock to intake older plants.
英文关键词	Stipa breviflora Plant traits Seed number Phytogenic hillock Plant-soil interaction
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000555557300004
WOS关键词	INNER-MONGOLIA ; GRASSLAND DEGRADATION ; ECOSYSTEM ; VARIABILITY ; RESISTANCE ; VEGETATION ; CHINENSIS ; PASTURE ; MOUNDS
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325390
作者单位	[Liu, Wenting] Qinghai Univ, Acad Anim Sci & Vet Med, Qinghai Prov Key Lab Adapt Management Alpine Gras, Xining 810016, Peoples R China; [Sun, Shixian] Chinese Acad Agr Sci, Inst Grassland Res, Hohhot 010010, Peoples R China; [Wei, Zhijun] Inner Mongolia Agr Univ, Coll Grassland Resources & Environm, Key Lab Grassland Resources, Minist Educ PR China, Hohhot 010010, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wenting,Sun, Shixian,Wei, Zhijun. Linking phytogenic hillocks with plant ecological strategies in a desert steppe: Adaptation of Stipa breviflora to heavy grazing[J],2020,117.
APA	Liu, Wenting,Sun, Shixian,&Wei, Zhijun.(2020).Linking phytogenic hillocks with plant ecological strategies in a desert steppe: Adaptation of Stipa breviflora to heavy grazing.ECOLOGICAL INDICATORS,117.
MLA	Liu, Wenting,et al."Linking phytogenic hillocks with plant ecological strategies in a desert steppe: Adaptation of Stipa breviflora to heavy grazing".ECOLOGICAL INDICATORS 117(2020).