Aerial river management by smart cross-border reforestation

Weng, Wei; Costa, Luís; Lüdeke, Matthias; Zemp, Delphine Clara

doi:10.1016/j.landusepol.2019.03.010

Cited by 16 publications

(5 citation statements)

References 56 publications

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“…The ability of land–atmosphere feedbacks to reverse the sign of change in river flow has also been shown under a business-as-usual deforestation scenario in the Xingu River basin in the Amazon, where accounting for land-atmosphere feedbacks switched river flow change estimates from an increase of 10–12% to a decrease of 30–36% [76]. Weng et al [77] further show that the heterogeneity of moisture recycling effects on Amazonian river flows extend to sub-basin levels, and identify sensitive sink and influential source regions.…”

Section: Evidence Of Moisture Recycling Influence On Water Resiliencementioning

confidence: 88%

Invisible water security: Moisture recycling and water resilience

et al. 2019

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Section: Evidence Of Moisture Recycling Influence On Water Resiliencementioning

confidence: 88%

Invisible water security: Moisture recycling and water resilience

et al. 2019

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“…The identification of hotspots of moisture recycling sources (Zemp, Schleussner, Barbosa, & Rammig, 2017; Zemp, Schleussner, Barbosa, Hirota, et al., 2017) can support the delineation of areas for forest protection. Furthermore, a recent study that investigates the potential to increase rainfall over a municipality in Bolivia with upwind “smart reforestation” reveals that 7.1 million hectares of reforested land could increase precipitation over the city by 1.25% (5.8 × 10 8 m 3 ) annually (Weng et al., 2019). The authors estimate that aerial river management —the practice of redistributing flows of atmospheric water through strategic LUC intentionally—has the potential to cover between 22% and 59% of the city's water demand in 2030 (Weng et al., 2019).…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, a recent study that investigates the potential to increase rainfall over a municipality in Bolivia with upwind “smart reforestation” reveals that 7.1 million hectares of reforested land could increase precipitation over the city by 1.25% (5.8 × 10 8 m 3 ) annually (Weng et al., 2019). The authors estimate that aerial river management —the practice of redistributing flows of atmospheric water through strategic LUC intentionally—has the potential to cover between 22% and 59% of the city's water demand in 2030 (Weng et al., 2019). Furthermore, considering moisture recycling trajectories , generally starting from the coastal area and moving inland, reforestation efforts could consider to be “build‐up” incrementally along this trajectory to increase moisture recycling and also enhance the success rate of reforestation projects (Ellison & Ifejika Speranza, 2020; Fagan et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

Reviewing the Impact of Land Use and Land‐Use Change on Moisture Recycling and Precipitation Patterns

Wierik

Cammeraat

Gupta

et al. 2021

Water Resources Research

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A significant part of the global terrestrial freshwater is stored in the soil. Green water, or plant-available soil moisture, enables vegetation growth and determines vegetation form and functioning (Eagleson, 2002). In turn, vegetation cover governs many green water processes, such as infiltration capacity, evaporation, and percolation (Figure 1). Vegetation changes can affect green water dynamics that subsequently affect moisture recycling patterns by altering the magnitude and timing of evaporation and transpiration (Wang-Erlandsson et al., 2014). Terrestrial moisture recycling (TMR) is referred to as the "process of terrestrial evaporation entering the atmosphere, traveling with the prevailing winds, and eventually falling out as rain" (Keys et al., 2017: 15). Globally, 57% of the rainfall over land returns to the atmosphere via evaporation or transpiration (Eagleson, 2003;Tuinenburg et al., 2020), of which 70% rains back again over land (Tuinenburg et al., 2020). Subsequently, terrestrial evaporation and transpiration comprise 40% of the total rainfall falling over land globally (Van Der Ent et al., 2010). TMR thus represents a significant hydrological pathway for the global distribution of water.Anthropogenic land-use change (LUC) following increasing demand for food, fuel, fiber, and timber (Schyns et al., 2019) might affect TMR patterns. Some studies suggest that deforestation and vegetation reduction can disturb TMR and affect local to regional rainfall patterns (

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“…A grand vision for forest restoration aims to reverse these processes, cooling and stabilising the climate while restoring reliable moisture supplies to regions currently facing threats or diminished water availability [181][182][183][184]. Makarieva et al [79] and Sheil [183] emphasise the potential benefits of increased tree cover, in general, including strategically placed forestations, possibly spanning across borders, to enhance rainfall and water availability downwind through intensified moisture convergence [184,185]. Similarly, promoting the infiltration of rainfall through soil conservation measures in seasonally dry areas can elevate soil moisture during the rainy and immediate postmonsoon periods [134,165,167].…”

Section: Increased Tree Cover Moisture Recycling and Precipitationmentioning

confidence: 99%

“…Doing so will require including rainfall partitioning at the soil surface (into surface runoff and infiltration) in such simulation models. Thus far, model applications have assumed that all precipitation arriving at the soil surface is infiltrating [20,172,185].…”

Section: Research Needsmentioning

confidence: 99%

Potential for Improved Hydrological Functioning and Stream Baseflows through Forest Landscape Restoration in the Tropics

Bruijnzeel¹,

Peña‐Arancibia²,

Ziegler³

et al. 2023

Preprint

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The large areas being targeted for tropical forest restoration as part of the UN Decade on Ecosystem Restoration will have major consequences for the flow of water through landscapes. Whilst the prevailing mantra that ‘more forest implies less streamflow’ remains true in terms of annual water yields, we demonstrate that opportunities for increased tree cover to improve seasonal flow regimes of streams, particularly baseflows, are important. We discuss several potential positive feedbacks of forest restoration on hydrological processes at various scales, including ‘trade-offs’ between changes in vegetation water use and infiltration after foresting degraded land; the recovery of the capacity of vegetation to capture ‘occult’ precipitation in specific coastal and montane settings; and enhanced moisture recycling and transport at various scales. Modelled changes in baseflow after foresting all degraded land climatically capable of carrying forest in the tropics suggested a positive effect in 10% of the land. For an additional 8%, the effect was predicted to be about neutral (<2 mm/y). We conclude that a more positive narrative regarding the relationship between tropical forestation and water availability is justified. It is time for greater involvement of hydrologists and atmospheric scientists in the development and assessment of forest landscape restoration efforts.

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Aerial river management by smart cross-border reforestation

Cited by 16 publications

References 56 publications

Invisible water security: Moisture recycling and water resilience

Invisible water security: Moisture recycling and water resilience

Reviewing the Impact of Land Use and Land‐Use Change on Moisture Recycling and Precipitation Patterns

Potential for Improved Hydrological Functioning and Stream Baseflows through Forest Landscape Restoration in the Tropics

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