Direct and indirect effects of long-term fertilization on the stability of the persistent seed bank

	Direct and indirect effects of long-term fertilization on the stability of the persistent seed bank
	Zhang, Chunhui; Willis, Charles G.; Ma, Zhen; Ma, Miaojun; Csontos, Peter; Baskin, Carol C.; Baskin, Jerry M.; Li, Junyong; Zhou, Huakun; Zhao, Xinquan
刊名	PLANT AND SOIL
	2019
卷号	438
关键词	Alpine meadow Annual net primary productivity Eutrophication Qinghai-Tibet plateau Soil pH Soil seed bank Vegetation composition
英文摘要	Background and aimsIf and how eutrophication influences the persistent soil seed bank is poorly understood. Here, we hypothesized that eutrophication alters the composition of the persistent seed bank indirectly through changes in the soil characteristics and aboveground plant community and productivity. We also hypothesized that changes in the persistent seed bank will consequently impact the aboveground vegetative composition.MethodsWe tested these hypotheses using data from a 9-year nitrogen and phosphorus fertilization experiment in an alpine meadow ecosystem on the eastern Qinghai-Tibet plateau.ResultsWe found that long-term nitrogen and phosphorus fertilization indirectly impacted the composition of the persistent seed bank through changes in soil pH, aboveground vegetation composition and annual net primary productivity (ANPP). Changes in the composition of the persistent seed bank, however, were relatively minor in comparison to changes in aboveground vegetation composition. Finally, changes in the persistent seed bank did not feedback on aboveground vegetation composition.ConclusionOur findings demonstrate the importance of soil pH, ANPP and vegetation composition in regulating the persistent seed bank under eutrophication. Our results also highlight the relative stability of the persistent seed bank to long-term eutrophication and their important contribution to the sustainability of grassland ecosystems.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/59801]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zhang, Chunhui,Willis, Charles G.,Ma, Zhen,et al. Direct and indirect effects of long-term fertilization on the stability of the persistent seed bank[J]. PLANT AND SOIL,2019,438.
APA	Zhang, Chunhui.,Willis, Charles G..,Ma, Zhen.,Ma, Miaojun.,Csontos, Peter.,...&Du, Guozhen.(2019).Direct and indirect effects of long-term fertilization on the stability of the persistent seed bank.PLANT AND SOIL,438.
MLA	Zhang, Chunhui,et al."Direct and indirect effects of long-term fertilization on the stability of the persistent seed bank".PLANT AND SOIL 438(2019).