دانلود رایگان مقاله لاتین تبخیر و تعرق چمن زار از سایت الزویر
عنوان فارسی مقاله:
تجزیه و تحلیل و ارزیابی تبخیر و تعرق چمن زار Tallgrass در مرکز ایالات متحده
عنوان انگلیسی مقاله:
Analysis and estimation of tallgrass prairie evapotranspiration in the central United States
سال انتشار : 2017
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مقدمه انگلیسی مقاله:
1. Introduction
Evapotranspiration (ET) is a key component of the hydrologic cycle as approximately two-thirds of the precipitation received by the land surface is returned to the atmosphere via ET (Baumgartner et al., 1975) and it links atmospheric, hydrological, and ecological processes (Pielke et al., 1998). Understanding of the biological andclimatic controls of ET has been a focus of climate change research for the pastfew decades (Brümmer et al., 2012). Currently,the eddy covariance (EC) technique is a widely used method for measuring ET at spatial scales of 100 s of meters (Baldocchi et al., 1988; Rana and Katerji, 2000) across temporal scales of hours to years (Baldocchi et al., 2001a). The concurrent measurement of climate variables at EC sites allows the examination of the driving factors that govern the variability of ET. Several studies have shown that ET is controlled by a number of climate variables such as solar radiation, air temperature (Ta), soil water content (SWC), vapor pressure deficit (VPD), and biological factors such as leaf emergence/development (Hu et al., 2009; Monteith, 1965; Priestley and Taylor, 1972; Stoy et al., 2006; Wagle et al., 2016a; Zha et al., 2010). Still, a lack of detailed information exists concerning cross-site variability in ET and its response to major climatic factors at multiple timescales within widely distributed tallgrass prairie, a native and largely distributed ecosystem across central North America and considered a unique grassland unmatched elsewhere in the world (Changnonet al., 2002). Currently, itis themost endangered ecosystem in North America, occupying less than 4% of its pre-settlement area (∼60 million ha) (Samson and Knopf, 1996). However, tallgrass prairie grasslands still provide habitat to support numerous grassland birds and other sensitive species, and contribute heavily for livestock production in several states of the United States. Thus, quantifying the extent to which ET varies in its response to climatic factors at multiple timescales within widely distributed tallgrass prairie ecosystems is crucial to move beyond site-level ET measurements to realistic estimates of water budgets over large areas (i.e., regions or continents) and to predictthe responses oftallgrass prairie ecosystems to current and future climate. To interpret EC time series data and assess the contributions of processes over multiple timescales, wavelet cross-correlation analysis is a suitable quantitative tool (Katul et al., 2001). This current study performs the wavelet cross-correlation analysis to draw new insights on the response of ET from six widely distributed tallgrass prairie ecosystems across the central United States to common climatic drivers over multiple (hour-to-interannual) timescales
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کلمات کلیدی:
A Simple Statistical Model for Estimating Evapotranspiration of ... adsabs.harvard.edu/abs/2015AGUFM.B43D0588W by P Wagle - 2015 Title: A Simple Statistical Model for Estimating Evapotranspiration of Tallgrass Prairies in the Central United States Using MODIS Data. Authors: Wagle, P.; Xiao ... Remote Sensing Advances for Earth System Science: The ESA Changing ... https://books.google.com/books?isbn=3319169521 Diego Fernández-Prieto, Roberto Sabia - 2016 - Technology & Engineering ... (2011) Global land-surface evaporation estimated from satellite-based observations. ... and elevation for evapotranspiration in a tall-grass prairie environment. [PDF]Estimation of standardized reference evapotranspiration on the ... www.csbe-scgab.ca/docs/journal/48/c0533p.pdf by C Maulé - Cited by 17 - Related articles estimating evapotranspiration in the Canadian Prairies. Incorporation .... reference ET for a well-watered short (ETos) or tall grass surface. It needs to be ... Evapotranspiration Measurement and Crop Coefficient Estimation ... journals.plos.org/plosone/article?id=10.1371/journal.pone.0100031 by F Yang - 2014 - Cited by 5 - Related articles Jun 18, 2014 - Evapotranspiration (ET) is an important component of the surface energy ... in evapotranspiration of native tallgrass prairie and cultivated wheat ... Peer review report 1 on “Analysis and estimation of tallgrass prairie ... journal-dl.com/item/591088153fbb6e13743da8b3 Peer review report 1 on “Analysis and estimation of tallgrass prairie evapotranspiration in the central United States”. Download Now (145.93 KB) ... [PDF]Evaluation of three evaporation estimation methods in a Canadian ... www.usask.ca/hydrology/papers/Armstrong_et_al_2008.pdf by RN Armstrong - 2008 - Cited by 25 - Related articles evaporation estimation methods lack universal applicabil- ity, and many may not ... AND L. W. MARTZ prairies, potential evaporation is normally well in excess ...... evapotranspiration of native tallgrass prairie and cultivated wheat ecosystems.
