Measurement and modelling of evapotranspiration of irrigated citrus orchard under Mediterranean conditions

Rana, Gianfranco; Katerji, Nader; Lorenzi, Francesca De

doi:10.1016/j.agrformet.2004.11.001

Cited by 117 publications

(61 citation statements)

References 25 publications

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“…In fact, topography interacts with local wind direction, microclimates and, in turn, vegetation type, fuel loads and moisture content. Several studies have shown topographic influences on vegetation composition and structure (Fontaine et al, 2007;Rescia et al, 1994), transpiration and desiccation conditions (Rana et al, 2005;Van der Trol et al, 2007), vegetation dynamics (Carmel andFlather, 2004;Mouillot et al, 2005), fire severity (Broncano and Retana 2004), and post-fire vegetation regeneration (Peñuelas et al, 2007;Baeza et al, 2007). Furthermore, some of the observed topographic effects on fire occurrence can be explained by human activities (e.g.…”

Section: Fire Hazard Is Higher In Specific Topographic Locationsmentioning

confidence: 99%

Landscape – wildfire interactions in southern Europe: Implications for landscape management

Moreira¹,

Viedma²,

Arianoutsou³

et al. 2011

Journal of Environmental Management

701

567

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Every year approx. half a million hectares of land are burned by wildfires in southern Europe, causing large ecological and socio-economic impacts. Climate and land use changes in the last decades have increased fire risk and danger. In this paper we review the available scientific knowledge on the relationships between landscape and wildfires in the Mediterranean region, with a focus on its application for defining landscape management guidelines and policies that could be adopted in order to promote landscapes with lower fire hazard. The main findings are that (1) socio-economic drivers have favoured land cover changes contributing to increasing fire hazard in the last decades, (2) large wildfires are becoming more frequent, (3) increased fire frequency is promoting homogeneous landscapes covered by fire-prone shrublands; (4) landscape planning to reduce fuel loads may be successful only if fire weather conditions are not extreme. The challenges to address these problems and the policy and landscape management responses that should be adopted are discussed, along with the major knowledge gaps.

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Section: Fire Hazard Is Higher In Specific Topographic Locationsmentioning

confidence: 99%

Landscape – wildfire interactions in southern Europe: Implications for landscape management

Moreira¹,

Viedma²,

Arianoutsou³

et al. 2011

Journal of Environmental Management

701

567

View full text Add to dashboard Cite

show abstract

“…However, some studies noted that the PM-KP model performs well for well-watered crops and for short periods of time within which the surface vegetation and weather do not change much [9], while other studies reported that the PM-KP approach has also been adapted to soil water stress conditions and to surfaces that are fully and partially covered by crops [7]. Most studies on the PM-KP approach in the literature (e.g., [10][11][12][13]) have mainly been focused on well-watered crop surfaces in Mediterranean regions because of the scarce water resources and over irrigation in agriculture managements in these regions [14].…”

Section: Introductionmentioning

confidence: 99%

Parameterization of Evapotranspiration Estimation for Two Typical East Asian Crops

Zhao

Lüers

2017

Atmosphere

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Estimation of evapotranspiration plays an important role in understanding the water cycle on the earth, especially the water budget in agricultural ecosystems. The parameterization approach of the Penman-Monteith-Katerji-Perrier (PM-KP) model, accounting for the influence of meteorological variables and aerodynamic resistance on surface resistance, was proposed in the literature, but it has not been applied to Asian croplands, and its error and sensitivity have not been reported yet. In this study, the estimation of evapotranspiration on half-hourly scale was carried out for two typical East Asian cropland research sites, and evaluated by using eddy-covariance measurements corrected with the energy-balance-closure concept. Sensitivity coefficients as well as systematic bias and random errors of the PM-KP approach were used to evaluate the model performance. Different distributions of the calibration coefficients between different crops were reported for the first time, indicating that the calibration of this model was more stable for the rice field than for the potato field. The commonly-used parameterization approach suggested by the Food and Agriculture Organization (FAO) was used as reference and was site-specifically optimized. The results suggest that the PM-KP approach would be a better alternative than the PM-FAO approach for estimating evapotranspiration for the flooded rice field, and an acceptable alternative for rain-fed croplands when the soil is well watered and the air is humid during the summer monsoon.

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“…Hence, conventional techniques like eddy covariance (EC) and Bowen ratio (BR) have been applied to several land uses such as grassland, forest, mango orchard, garlic, grapes, citrus, etc. [21][22][23][24][25][26][27][28]. However, these conventional techniques do not provide spatial trends (or distribution) at the regional scale especially in regions with advective climatic conditions.…”

Section: Introductionmentioning

confidence: 99%

Evapotranspiration Estimation with Remote Sensing and Various Surface Energy Balance Algorithms—A Review

2014

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Abstract:With the advent of new satellite technology, the radiative energy exchanges between Sun, Earth, and space may now be quantified accurately. Nevertheless, much less is known about the magnitude of the energy flows within the climate system and at the Earth's surface, which cannot be directly measured by satellites. This review surveys the basic theories, observational methods, and different surface energy balance algorithms for estimating evapotranspiration (ET) from landscapes and regions with remotely sensed surface temperatures, and highlights uncertainties and limitations associated with those estimation methods. Although some of these algorithms were built up for specific land covers like irrigation areas only, methods developed for other disciplines like hydrology and meteorology, are also reviewed, where continuous estimates in space and in time are needed. Temporal and spatial scaling issues associated with the use of thermal remote sensing for estimating evapotranspiration are also discussed. A review of these different satellite based remote sensing approaches is presented. The main physical bases and assumptions of these algorithms are also discussed. Some results are shown for the estimation of evapotranspiration on a rice paddy of Chiayi Plain in Taiwan using remote sensing data.

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Measurement and modelling of evapotranspiration of irrigated citrus orchard under Mediterranean conditions

Cited by 117 publications

References 25 publications

Landscape – wildfire interactions in southern Europe: Implications for landscape management

Landscape – wildfire interactions in southern Europe: Implications for landscape management

Parameterization of Evapotranspiration Estimation for Two Typical East Asian Crops

Evapotranspiration Estimation with Remote Sensing and Various Surface Energy Balance Algorithms—A Review

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