干旱区生态环境知识资源中心(Arid): Direct and indirect effects of precipitation change and nutrients addition on desert steppe productivity in Inner Mongolia, northern China

Arid

DOI	10.1007/s11104-021-05206-2
	Direct and indirect effects of precipitation change and nutrients addition on desert steppe productivity in Inner Mongolia, northern China
	Guo, Xinxin; Zuo, Xiaoan; Yue, Ping; Li, Xiangyun; Hu, Ya; Chen, Min; Yu, Qiang
通讯作者	Zuo, XA (corresponding author)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China.
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2022
卷号	471 期号:1-2 页码:527-540
英文摘要	Background and Aims Global changes (precipitation changes and nutrient deposition) profoundly impact structure and function of steppe ecosystem. However, it is unclear the mechanism by which multiple limiting resources affect plant aboveground net primary productivity (ANPP) in desert steppe. Methods We conducted a field experiment manipulating both precipitation (3 levels: ambient and +/- 50% precipitation) and nutrients addition (3 levels: ambient; nitrogen (N) addition; N/phosphorus (P)/potassium (K) addition) in a factorial design. We focused on the effects of these treatments on species diversity (species richness, Shannon index, abundance), ANPP, plant functional traits, and soil properties. We used structural equation model (SEM) to evaluate the direct and indirect effects of precipitation amount and nutrient addition on ANPP through affecting species diversity and functional traits. Results Increasing precipitation increased species diversity and ANPP. NPK addition and increased 50% precipitation significantly increased ANPP over all other treatment combinations. Drought (-50%) reduced plant height and leaf dry matter content (LDMC), but increased leaf nitrogen content (LNC). Species richness, abundance, height and LDMC were positively correlated with ANPP, while specific leaf area (SLA) and LNC were negatively correlated with ANPP. SEM suggested that precipitation amount indirectly affected ANPP through its effect on abundance and SLA, while nutrient addition indirectly affected ANPP only through its effect on abundance. Conclusion In desert steppe, the interaction of precipitation and nutrient addition had a significant positive effect on ANPP, which was mainly mediated by species diversity and functional traits. Our results highlight the importance of species diversity and functional traits in driving short-term responses of ANPP to environmental factors in desert steppe ecosystems.
英文关键词	Multiple limiting resources aboveground net primary productivity Species diversity community-level functional traits Structural equation model
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000739232900001
WOS关键词	PLANT FUNCTIONAL TRAITS ; NITROGEN ADDITION ; PHOSPHORUS LIMITATION ; ECOSYSTEM RESPIRATION ; COMMUNITY COMPOSITION ; SPECIES RICHNESS ; SOIL PROPERTIES ; CLIMATE-CHANGE ; CO-LIMITATION ; LEAF-AREA
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376609
作者单位	[Guo, Xinxin; Zuo, Xiaoan; Yue, Ping; Li, Xiangyun; Hu, Ya; Chen, Min] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China; [Guo, Xinxin; Zuo, Xiaoan; Li, Xiangyun; Hu, Ya] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China; [Guo, Xinxin; Li, Xiangyun; Hu, Ya] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Guo, Xinxin; Zuo, Xiaoan; Yue, Ping; Li, Xiangyun; Chen, Min] Key Lab Stress Physiol & Ecol Cold & Arid Reg, Lanzhou 730000, Peoples R China; [Yu, Qiang] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Guo, Xinxin,Zuo, Xiaoan,Yue, Ping,et al. Direct and indirect effects of precipitation change and nutrients addition on desert steppe productivity in Inner Mongolia, northern China[J],2022,471(1-2):527-540.
APA	Guo, Xinxin.,Zuo, Xiaoan.,Yue, Ping.,Li, Xiangyun.,Hu, Ya.,...&Yu, Qiang.(2022).Direct and indirect effects of precipitation change and nutrients addition on desert steppe productivity in Inner Mongolia, northern China.PLANT AND SOIL,471(1-2),527-540.
MLA	Guo, Xinxin,et al."Direct and indirect effects of precipitation change and nutrients addition on desert steppe productivity in Inner Mongolia, northern China".PLANT AND SOIL 471.1-2(2022):527-540.