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

NWIPB OpenIR

	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; Yao, Buqing; Du, Guozhen
	2019
发表期刊	PLANT AND SOIL
卷号	438
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.
关键词	Alpine meadow Annual net primary productivity Eutrophication Qinghai-Tibet plateau Soil pH Soil seed bank Vegetation composition
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/59801
专题	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).