干旱区生态环境知识资源中心(Arid): Evaluating soil acidification risk and its effects on biodiversity-ecosystem multifunctionality relationships in the drylands of China

Arid

DOI	10.1016/j.fecs.2024.100178
	Evaluating soil acidification risk and its effects on biodiversity-ecosystem multifunctionality relationships in the drylands of China
	Du, Lan; Tian, Shengchuan; Zhao, Nan; Zhang, Bin; Mu, Xiaohan; Tang, Lisong; Zheng, Xinjun; Li, Yan
通讯作者	Zheng, XJ
来源期刊	FOREST ECOSYSTEMS
ISSN	2095-6355
EISSN	2197-5620
出版年	2024
卷号	11
英文摘要	Background: Soil acidification caused by anthropogenic activities may affect soil biochemical cycling, biodiversity, productivity, and multiple ecosystem -related functions in drylands. However, to date, such information is lacking to support this hypothesis. Methods: Based on a transect survey of 78 naturally assembled shrub communities, we calculated acid deposition flux in Northwest China and evaluated its likely ecological effects by testing three alternative hypotheses, namely: niche complementarity, mass ratio, and vegetation quantity hypotheses. Rao's quadratic entropy and communityweighted mean traits were employed to represent the complementary aspect of niche complementarity and mass ratio effects, respectively. Results: We observed that in the past four decades, the concentrations of exchangeable base cations in soil in Northwest China have decreased significantly to the extent of having faced the risk of depletion, whereas changes in the calcium carbonate content and pH of soil were not significant. Acid deposition primarily increased the aboveground biomass and shrub density in shrublands but had no significant effect on shrub richness and ecosystem multifunctionality (EMF), indicating that acid deposition had positive but weak ecological effects on dryland ecosystems. Community weighted mean of functional traits (representing the mass ratio hypothesis) correlated negatively with EMF, whereas both Rao's quadratic entropy (representing the niche complementarity hypothesis) and aboveground biomass (representing the vegetation quantity hypothesis) correlated positively but insignificantly with EMF. These biodiversity-EMF relationships highlight the fragility and instability of drylands relative to forest ecosystems. Conclusions: The findings from this study serve as important reference points to understand the risk of soil acidification in arid regions and its impacts on biodiversity-EMF relationships.
英文关键词	Soil acidification risk Biodiversity Ecosystem multifunctionality Niche complementarity hypothesis Mass ratio hypothesis Vegetation quantity hypothesis
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001188985900001
WOS关键词	NITROGEN DEPOSITION ; ATMOSPHERIC DEPOSITION ; PLANT DIVERSITY ; PRODUCTIVITY ; CLIMATE ; BIOMASS ; IMPACT ; PRECIPITATION ; ALLOMETRY ; CHEMISTRY
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403760
推荐引用方式 GB/T 7714	Du, Lan,Tian, Shengchuan,Zhao, Nan,et al. Evaluating soil acidification risk and its effects on biodiversity-ecosystem multifunctionality relationships in the drylands of China[J],2024,11.
APA	Du, Lan.,Tian, Shengchuan.,Zhao, Nan.,Zhang, Bin.,Mu, Xiaohan.,...&Li, Yan.(2024).Evaluating soil acidification risk and its effects on biodiversity-ecosystem multifunctionality relationships in the drylands of China.FOREST ECOSYSTEMS,11.
MLA	Du, Lan,et al."Evaluating soil acidification risk and its effects on biodiversity-ecosystem multifunctionality relationships in the drylands of China".FOREST ECOSYSTEMS 11(2024).