干旱区生态环境知识资源中心(Arid): Nutrients and water availability constrain the seasonality of vegetation activity in a Mediterranean ecosystem

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DOI	10.1111/gcb.15138
	Nutrients and water availability constrain the seasonality of vegetation activity in a Mediterranean ecosystem
	Luo, Yunpeng; El-Madany, Tarek; Ma, Xuanlong; Nair, Richard; Jung, Martin; Weber, Ulrich; Filippa, Gianluca; Bucher, Solveig F.; Moreno, Gerardo; Cremonese, Edoardo; Carrara, Arnaud; Gonzalez-Cascon, Rosario; Escudero, Yonatan Caceres; Galvagno, Marta; Pacheco-Labrador, Javier; Pilar Martin, M.; Perez-Priego, Oscar; Reichstein, Markus; Richardson, Andrew D.; Menzel, Annette; Roemermann, Christine; Migliavacca, Mirco
通讯作者	Luo, YP ; Migliavacca, M
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2020
卷号	26 期号:8 页码:4379-4400
英文摘要	Anthropogenic nitrogen (N) deposition and resulting differences in ecosystem N and phosphorus (P) ratios are expected to impact photosynthetic capacity, that is, maximum gross primary productivity (GPP(max)). However, the interplay between N and P availability with other critical resources on seasonal dynamics of ecosystem productivity remains largely unknown. In a Mediterranean tree-grass ecosystem, we established three landscape-level (24 ha) nutrient addition treatments: N addition (NT), N and P addition (NPT), and a control site (CT). We analyzed the response of ecosystem to altered nutrient stoichiometry using eddy covariance fluxes measurements, satellite observations, and digital repeat photography. A set of metrics, including phenological transition dates (PTDs; timing of green-up and dry-down), slopes during green-up and dry-down period, and seasonal amplitude, were extracted from time series of GPP(max) and used to represent the seasonality of vegetation activity. The seasonal amplitude of GPP(max) was higher for NT and NPT than CT, which was attributed to changes in structure and physiology induced by fertilization. PTDs were mainly driven by rainfall and exhibited no significant differences among treatments during the green-up period. Yet, both fertilized sites senesced earlier during the dry-down period (17-19 days), which was more pronounced in the NT due to larger evapotranspiration and water usage. Fertilization also resulted in a faster increase in GPP(max) during the green-up period and a sharper decline in GPP(max) during the dry-down period, with less prominent decline response in NPT. Overall, we demonstrated seasonality of vegetation activity was altered after fertilization and the importance of nutrient-water interaction in such water-limited ecosystems. With the projected warming-drying trend, the positive effects of N fertilization induced by N deposition on GPP(max) may be counteracted by an earlier and faster dry-down in particular in areas where the N:P ratio increases, with potential impact on the carbon cycle of water-limited ecosystems.
英文关键词	GPP capacity nitrogen deposition nutrient imbalance phenology random forest semi-arid structure and physiology tree-grass ecosystem water availability
类型	Article
语种	英语
开放获取类型	Green Published, Green Submitted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000535841100001
WOS关键词	DIGITAL REPEAT PHOTOGRAPHY ; GROSS PRIMARY PRODUCTIVITY ; N P STOICHIOMETRY ; PLANT PHENOLOGY ; CARBON-DIOXIDE ; INTERANNUAL VARIABILITY ; PRECIPITATION PULSES ; SEMIARID ECOSYSTEMS ; CHLOROPHYLL CONTENT ; NITROGEN ADDITION
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324547
作者单位	[Luo, Yunpeng; El-Madany, Tarek; Ma, Xuanlong; Nair, Richard; Jung, Martin; Weber, Ulrich; Pacheco-Labrador, Javier; Reichstein, Markus; Migliavacca, Mirco] Max Planck Inst Biogeochem, Dept Biogeochem Integrat, D-07745 Jena, Germany; [Ma, Xuanlong; Roemermann, Christine] German Ctr Integrat Biodivers Res iDiv, Leipzig, Germany; [Filippa, Gianluca; Cremonese, Edoardo; Galvagno, Marta] Environm Protect Agcy Aosta Valley, ARPA Valle Aosta, Aosta, Italy; [Bucher, Solveig F.; Roemermann, Christine] Friedrich Schiller Univ Jena, Inst Ecol & Evolut, Plant Biodivers Grp, Jena, Germany; [Bucher, Solveig F.; Reichstein, Markus; Roemermann, Christine] Michael Stifel Ctr Jena Data Driven & Simulat Sci, Jena, Germany; [Moreno, Gerardo] Univ Extremadura, Inst Dehesa Res, Plasencia, Spain; [Carrara, Arnaud] Fdn Ctr Estudios Ambientales MediterrSneo CEAM, Paterna, Spain; [Gonzalez-Cascon, Rosario] Natl Inst Agr & Food Res & Technol INIA, Dept Environm, Madrid, Spain; [Escudero, Yonatan Caceres] Univ Extremadura, Forestry...
推荐引用方式 GB/T 7714	Luo, Yunpeng,El-Madany, Tarek,Ma, Xuanlong,et al. Nutrients and water availability constrain the seasonality of vegetation activity in a Mediterranean ecosystem[J],2020,26(8):4379-4400.
APA	Luo, Yunpeng.,El-Madany, Tarek.,Ma, Xuanlong.,Nair, Richard.,Jung, Martin.,...&Migliavacca, Mirco.(2020).Nutrients and water availability constrain the seasonality of vegetation activity in a Mediterranean ecosystem.GLOBAL CHANGE BIOLOGY,26(8),4379-4400.
MLA	Luo, Yunpeng,et al."Nutrients and water availability constrain the seasonality of vegetation activity in a Mediterranean ecosystem".GLOBAL CHANGE BIOLOGY 26.8(2020):4379-4400.