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  • 1
    Language: English
    Pages: 1 Online-Ressource (circa 35 Seiten) , Illustrationen
    Series Statement: Policy research working paper 8321
    Series Statement: World Bank E-Library Archive
    Series Statement: Policy research working paper
    Parallel Title: Erscheint auch als Ali, Daniel Ayalew Using Satellite Imagery to Assess Impacts of Soil and Water Conservation Measures: Evidence from Ethiopia's Tana-Beles Watershed
    Keywords: Satellitenkommunikation ; Fotografie ; Gewässerschutz ; Bodenschutz ; Äthiopien ; Graue Literatur
    Abstract: Although efforts at soil and water conservation are routinely viewed as instrumental in reducing vulnerability to climate change, their impact has rarely been quantified. Combining data on the timing and intensity of soil and water conservation interventions in select Ethiopian watersheds from 2009 to 2016 with a pixel-level panel of vegetative cover and soil moisture data derived from satellite imagery makes it possible to assess the biophysical impacts of such measures using a difference-in-differences specification. The results point toward significant effects overall that vary by season, and that tree planting and other soil and water conservation activities are more effective on degraded than cultivated land. The results are consistent with before-after regressions for daily sediment load and stream flows in a subset of micro-watersheds. It thus appears that satellite imagery can improve the design and near-real-time monitoring of sustainable land management interventions for watersheds and landscape
    URL: Volltext  (Deutschlandweit zugänglich)
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Online Resource
    Online Resource
    Washington, D.C. : World Bank Group, Development Economics, Development Research Group
    Language: English
    Pages: 1 Online-Ressource (circa 35 Seiten) , Illustrationen
    Series Statement: Policy research working paper 8437
    Series Statement: World Bank E-Library Archive
    Series Statement: Policy research working paper
    Parallel Title: Erscheint auch als Ali, Daniel Ayalew Using Satellite Imagery to Revolutionize Creation of Tax Maps and Local Revenue Collection
    Keywords: Vermögensteuer ; Immobilienbewertung ; Weltraumtechnik ; Fotografie ; Hedonischer Preisindex ; Besteuerungsverfahren ; Ruanda ; Graue Literatur
    Abstract: The technical complexity of ensuring that tax rolls are complete and valuations current is often perceived as a major barrier to bringing in more property tax revenues in developing countries. This paper shows how high-resolution satellite imagery makes it possible to assess the completeness of existing tax maps by estimating built-up areas based on building heights and footprints. Together with information on sales prices from the land registry, targeted surveys, and routine statistical data, this makes it possible to use mass valuation procedures to generate tax maps. The example of Kigali illustrates the reliability of the method and the potentially far-reaching revenue impacts. Estimates show that heightened compliance and a move to a 1 percent ad valorem tax would yield a tenfold increase in revenue from public land
    URL: Volltext  (Deutschlandweit zugänglich)
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