干旱区生态环境知识资源中心(Arid): Precipitation regulates the livestock dung seed bank through above ground vegetation productivity in the Qaidam basin

Arid

DOI	10.1002/ldr.4236
	Precipitation regulates the livestock dung seed bank through above ground vegetation productivity in the Qaidam basin
	Wang, Shu-Lin; Hou, Fu-Jiang
通讯作者	Hou, FJ
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2022
卷号	33 期号:10 页码:1637-1648
英文摘要	The livestock dung seed bank (DSB) plays an important role in the regeneration and sustainability of grasslands in grazing ecosystems. As global precipitation patterns change, the productivity of the above ground vegetation (AGV) in semiarid and arid regions may be substantially affected, as will both the size and composition of the livestock DSB. However, the effects of altered precipitation patterns remain to be determined. Dung was collected for three consecutive years (2018-2020) from horses, cattle and sheep in the desert region of the Qaidam basin, China. The seedling emergence method was used to examine species richness and seed density in the DSB, and the structure and composition of the DSB and the AGV were also investigated. Combined with precipitation data, a structural equation model was used to explore how precipitation affects the livestock DSB by quantifying changes in the AGV in the basin. The results showed that horses [seedling density 5.32 (2018), 6.30 (2019) and 7.44 (2020) g(-1) dung] had greater seed dispersal potential than cattle (3.91, 5.08 and 6.42 g(-1) dung) or sheep (0.88, 1.32 and 2.96 g(-1) dung), indicating that horse dung contributes the most to the AGV in the Qaidam basin. Furthermore, the seed composition of the DSB differed substantially from species of the AGV, implying that the DSB can promote the diversification of grasslands. An increase in precipitation increased both the productivity of the AGV (and hence livestock forage) and the size and composition of the DSB. These results highlight that the DSB is an essential driver of the development of grasslands in arid areas and that the indirect effect of precipitation on the livestock DSB for the regeneration and conservation of grasslands should be considered in arid regions.
英文关键词	arid area climate change dung seedling endozoochory grazing ecosystem
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000789501500001
WOS关键词	ALPINE MEADOW ; GUT PASSAGE ; SOIL ; SIMILARITY ; IMPACT ; ESTABLISHMENT ; ENDOZOOCHORY ; BIODIVERSITY ; COMMUNITIES ; HERBIVORES
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393715
推荐引用方式 GB/T 7714	Wang, Shu-Lin,Hou, Fu-Jiang. Precipitation regulates the livestock dung seed bank through above ground vegetation productivity in the Qaidam basin[J],2022,33(10):1637-1648.
APA	Wang, Shu-Lin,&Hou, Fu-Jiang.(2022).Precipitation regulates the livestock dung seed bank through above ground vegetation productivity in the Qaidam basin.LAND DEGRADATION & DEVELOPMENT,33(10),1637-1648.
MLA	Wang, Shu-Lin,et al."Precipitation regulates the livestock dung seed bank through above ground vegetation productivity in the Qaidam basin".LAND DEGRADATION & DEVELOPMENT 33.10(2022):1637-1648.