Differences in precipitation and evapotranspiration between forested and deforested areas in the Amazon rainforest using remote sensing data

Oliveira, Juarez Ventura de; Ferreira, Douglas Batista da Silva; Sahoo, Prafulla Kumar; Sodré, Giordani Rafael Conceição; Souza, Everaldo Barreiros de; Queiroz, Joaquim Carlos Barbosa

doi:10.1007/s12665-018-7411-9

Cited by 21 publications

(5 citation statements)

References 54 publications

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“…For given precipitation, ET increase would lead to an increase in evaporation ratio (i.e., ET / P ) and hence a reduction in water resources in a long‐term time scale. However, variations in ET and vegetation change will further change regional precipitation via land‐atmospheric interactions (de Oliveira et al, 2018; Li & Xue, 2005). It should be noted that the change in precipitation is larger than the change in ET over the study area.…”

Section: Discussionmentioning

confidence: 99%

Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016

et al. 2020

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This study quantifies the influences of climate variation and vegetation greening on the changes in evapotranspiration (ET) over 110 humid catchments of China from 1982 to 2016. A process‐based model considering climate and vegetation changes is employed to estimate ET. The simulated ET compared well with the observed values based on the flux measurements and water balance equation, with the coefficients of determination above 0.62. During the study period, environmental change of the study area was characterized by the increases in air temperature and leaf area index, that is, climate warming and vegetation greening. Annual ET increased at 104 catchments with the trends ranging from 0.01 to 6.2 mm yr−2. The numerical experiment approach and sensitivity method are used to attribute ET changes to climate variation and vegetation greening. The results show that the contributions of climate variation to ET changes estimated by the two methods are 90.6% and 91.3%, respectively, whereas the contributions of vegetation greening to ET changes are only 9.4% and 8.7%, indicating that climate variation controls ET changes in the study area. However, vegetation greening alters the proportions of ET components, which contributes 59.0%–62.0% to the increase in the ratio of transpiration to ET. This study quantifies the roles of climate and vegetation changes in the dynamics of ET, suggesting that more concerns should be paid on the interactions between ecological processes and hydrological cycle in humid regions.

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Section: Discussionmentioning

confidence: 99%

Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016

et al. 2020

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“…(), who found a similar pattern of ET (decrease from May to September) in a transitional forest in the Eastern Amazon, with average ET = 3.3 mm⋅day −1 . However, considering the percentage of forest and deforested area in the IRB, the ET in the wet season was lower than expected by the values presented by de Oliveira et al (), who used remote sensing, and by Hodnett et al (1996), who used a water balance approach. The ability of roots to access moisture in deep soil layers (Jipp et al ., ; Christoffersen et al ., ; Maeda et al ., ) and the use of increased light during the dry season (Baker et al ., ) explain the weak seasonality, even with 51% of the basin deforested, as the secondary vegetation has similar evapotranspiration to the forest (Jipp et al ., ), and the pasture's roots in the region are not so shallow (Nepstad et al ., ).…”

Section: Discussionmentioning

confidence: 59%

Terrestrial water storage and Pacific SST affect the monthly water balance of Itacaiúnas River Basin (Eastern Amazonia)

Cavalcante

Pontes

Tedeschi

et al. 2019

Intl Journal of Climatology

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At subannual timescales, terrestrial water storage (TWS) plays a critical role in the partitioning of precipitation into runoff and evapotranspiration, and Amazonia stands out due to the great amplitude of the annual cycles. In this study, we analyse the monthly variation of the water balance and extreme hydrological events using GRACE data for a watershed situated in the "arc-ofdeforestation" in the Eastern Brazilian Legal Amazon. The existence of a correlation and lag time response between the monthly sea surface temperatures in the Pacific and North Atlantic and the variables of the water balance were also investigated. The results showed a weak seasonal cycle of evapotranspiration, with higher water intercepted by the vegetation canopy in the rainy season and higher potential evapotranspiration supplied by TWS in the dry season. The lowest value of water storage was reached in

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“…Based on the land cover dynamics (MCD12Q2) for 2005, 2010, 2011, and 2013 (Figure S5 in Supporting Information ), the value of NBAR‐EVI2 in the southern Amazon basin is relatively large, corresponding to the area of WPDs changed. The WPD of

{\phi }_{ET-TWSA}^{1-degree}

has zero‐to‐positive variation patterns from 2002 to 2013 (Figure 5), suggesting that the decrease in ET after forest deforestation or degradation (Brown et al., 2016; De Oliverira et al., 2018; Staal et al., 2020) was first caused by a reduction of the capacity of the vegetation to access subsurface water (Aparecide et al., 2020; Zemp et al., 2017). Humphrey et al.…”

Section: Resultsmentioning

confidence: 99%

Spatiotemporal Variations of Evapotranspiration in Amazonia Using the Wavelet Phase Difference Analysis

et al. 2022

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Differences in precipitation and evapotranspiration between forested and deforested areas in the Amazon rainforest using remote sensing data

Cited by 21 publications

References 54 publications

Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016

Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016

Terrestrial water storage and Pacific SST affect the monthly water balance of Itacaiúnas River Basin (Eastern Amazonia)

Spatiotemporal Variations of Evapotranspiration in Amazonia Using the Wavelet Phase Difference Analysis

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