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Ocena ryzyka pustynnienia gminy Tanda (Niger)

Ocena ryzyka pustynnienia gminy Tanda (Niger)

Ismaël Tinno Ibrahim

67,97 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Ciencias de la tierra/geociencias
ISBN:
9786209508127
67,97 €
IVA incluido
Disponible

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Sobre IBD

Gmina wiejska Tanda, charakteryzująca się wydłużonym okresem deszczowym i przepływającą przez nią rzeką Niger, stanowi atrakcyjny obszar. Interakcje z rdzennymi mieszkańcami wywierają presję na regenerację roślinności. Aby ocenić ryzyko pustynnienia, przeanalizowaliśmy dzienne dane opadowe z lat 1931-2007, obliczyliśmy wskaźniki różnicowe roślinności (NDVI i SAVI) na podstawie zdjęć Landsat (1973, 1984, 1992 i 2002) oraz omówiliśmy wyniki; na koniec porównano zdjęcie z Google Earth z fotografią lotniczą z 1975 r. Analiza klimatyczna wykazuje międzyroczne wahania opadów z naprzemiennymi okresami suszy i wilgoci. Porównanie lat 1984/1973 i 2002/1992 wykazuje tendencję spadkową wskaźników wegetacji pomimo powrotu do bardziej wilgotnych warunków w latach 1992 i 2002. W latach 1992/1984 i 2002/1973 wyniki wskazują na wzrost wskaźników wegetacji spowodowany opadami w okresach wilgotnych (1992 i 2002) i odzwierciedlają trudność porównania różnych warunków klimatycznych.

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