干旱区生态环境知识资源中心(Arid): Ecophysiological Responses to Rainfall Variability in Grassland and Forests Along a Latitudinal Gradient in Italy

Arid

DOI	10.3389/ffgc.2019.00016
	Ecophysiological Responses to Rainfall Variability in Grassland and Forests Along a Latitudinal Gradient in Italy
	Conte, Adriano; Fares, Silvano; Salvati, Luca; Savi, Flavia; Matteucci, Giorgio; Mazzenga, Francesco; Spano, Donatella; Sirca, Costantino; Marras, Serena; Galvagno, Marta; Cremonese, Edoardo; Montagnani, Leonardo
通讯作者	Fares, S
来源期刊	FRONTIERS IN FORESTS AND GLOBAL CHANGE
EISSN	2624-893X
出版年	2019
卷号	2
英文摘要	In the Mediterranean region, ecosystems are severely affected by climate variability. The Italian Peninsula is a hot spot for biodiversity thanks to its heterogeneous landscape and the Mediterranean, Continental, and Alpine climates hosting a broad range of plant functional types along a limited latitudinal range from 40' to 46' N. In this study we applied a comparative approach integrating descriptive statistics, time series analysis, and multivariate techniques to answer the following questions: (i) do the climatic variables affect Gross Primary Productivity (GPP), Reco, Water Use Efficiency (WUE), and ET to a similar extent among different sites? (ii) Does a common response pattern exist among ecosystems along a latitudinal gradient in Italy? And, finally (iii) do these ecosystems respond synchronically to meteorological conditions or does a delayed response exist? Six sites along a latitudinal, altitudinal, and vegetational gradient from semi-arid (southern Italy), to a mountainous Mediterranean site (central Italy), and sub-humid wet Alpine sites (northern Italy) were considered. For each site, carbon and water fluxes, and meteorological data collected during two hydrologically-contrasting years (i.e., a dry and a wet year) were analyzed. Principal Component Analysis (PCA) was adopted to identify temporal and spatial variations in GPP, Ecosystem Respiration (Reco), WUE, and Evapotranspiration (ET). The model outlined differences among Mediterranean semi-arid, Mediterranean mountainous, and Alpine sites in response to contrasting precipitation regimes. GPP, Reco, WUE, and ET increased up to 16, 19, 25, and 28%, respectively in semi-arid Mediterranean sites and up to 15, 32, 15, and 11%, respectively in Alpine sites in the wet year compared to the dry year. Air temperature was revealed to be one of the most important variables affecting GPP, Reco, WUE, and ET in all the study sites. While relative air humidity was more important in southern Mediterranean sites, global radiation was more significant in northern Italy. Our work suggests that a realistic prediction of the main responses of Italian forests under climate change should also take in account delayed responses due to acclimation to abiotic stress or changing environmental conditions.
英文关键词	forest ecophysiology GPP WUE (water use efficiency) rainfall variability carbon flux and partitioning RECo2
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000516820700001
WOS关键词	WATER-USE EFFICIENCY ; NET ECOSYSTEM EXCHANGE ; SOIL RESPIRATION ; MEDITERRANEAN ECOSYSTEMS ; TERRESTRIAL ECOSYSTEMS ; PRECIPITATION PULSES ; DROUGHT STRESS ; CLIMATE-CHANGE ; CARBON FLUXES ; URBAN-GROWTH
WOS类目	Ecology ; Forestry
WOS研究方向	Environmental Sciences & Ecology ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334114
作者单位	[Conte, Adriano; Fares, Silvano; Salvati, Luca; Savi, Flavia] Council Agr Res & Econ, Res Ctr Forestry & Wood, Rome, Italy; [Matteucci, Giorgio] Natl Res Council Italy, Inst Agr & Forestry Syst Mediterranean, Ercolano, Italy; [Mazzenga, Francesco] Natl Res Council Italy, Res Inst Terr Ecosyst IRET, Monterotondo, Italy; [Spano, Donatella; Sirca, Costantino; Marras, Serena] Univ Sassari, Dept Agr, Sassari, Italy; [Spano, Donatella; Sirca, Costantino; Marras, Serena] CMCC Fdn, Euromediterranean Ctr Climate Change, IAFES Div, Sassari, Italy; [Galvagno, Marta; Cremonese, Edoardo] Environm Protect Agcy Aosta Valley, ARPA Valle Aosta, Climate Change Unit, Aosta, Italy; [Montagnani, Leonardo] Free Univ Bolzano, Fac Sci & Technol, Bolzano, Italy; [Montagnani, Leonardo] Forest Serv, Bolzano, Autonomous Prov, Italy
推荐引用方式 GB/T 7714	Conte, Adriano,Fares, Silvano,Salvati, Luca,et al. Ecophysiological Responses to Rainfall Variability in Grassland and Forests Along a Latitudinal Gradient in Italy[J],2019,2.
APA	Conte, Adriano.,Fares, Silvano.,Salvati, Luca.,Savi, Flavia.,Matteucci, Giorgio.,...&Montagnani, Leonardo.(2019).Ecophysiological Responses to Rainfall Variability in Grassland and Forests Along a Latitudinal Gradient in Italy.FRONTIERS IN FORESTS AND GLOBAL CHANGE,2.
MLA	Conte, Adriano,et al."Ecophysiological Responses to Rainfall Variability in Grassland and Forests Along a Latitudinal Gradient in Italy".FRONTIERS IN FORESTS AND GLOBAL CHANGE 2(2019).