Izithombe zasogwadule

Ugwadule lungenye yezinhlobo eziyinhloko ze-biome Emhlabeni. Ugwadule igama elisetshenziselwa izifunda ezithola ngaphansi kwezimvula ezingama-250 mm zemvula yonyaka.

Izingwadule ziyimvelo, futhi umswakama ophansi wasogwadule ubangela umehluko omkhulu kakhulu wezinga lokushisa phakathi kwemini nobusuku. Izingwadule zingahluka kakhulu kunani lemvula elizitholayo. Isikhathi sokuna kwemvula naso asilindelekile. Yize inani lezinto eziphilayo emhlabathini liphansi ezingwadule ezishisayo, amaminerali maningi. Ngisho nasezindaweni ezithuthuke kakhulu, uhlaza luncane kakhulu, futhi umhlaba ubhekene ngqo nemisebe yelanga nomoya. Kokubili onyaka kanye nezimila ziyatholakala, kodwa i-cacti ne-Sahara Shrub zijwayelekile, cishe nezinhlobo zezitshalo ezingama-400 e-Arctic, nenani elilinganiselwe lezinhlobo zezitshalo e-Antarctica. Lezi zitshalo zivame ukuba namahlamvu amancane kakhulu noma angabi nawo ukunciphisa ukulahlekelwa kwamanzi. Ezinye izitshalo ziphila njengezitho ezingaphansi komhlaba futhi zinesikhathi esifushane sokukhula lapho kunemvula enkulu.

Izilwane zasogwadule kufanele zibhekane nezimo ezimbi kakhulu: amanzi nokudla kuyindlala, amazinga okushisa ashintsha kakhulu, ukuhamba nokumba imigodi esihlabathini kanye neqhwa eliwugqinsi kunzima. Kube nenhlobonhlobo yokuguquguquka kokusebenza kwengqondo nokuziphatha ukuze kunqotshwe lezi zinkinga. Ezingwadule ezishisayo, izilwane eziningi zincane, zichitha amahora ashisa kakhulu osuku ngaphansi kwezitshalo noma ngaphansi komhlaba, zizingela nokufuna ukudla ebusuku. Izilwane ezinjengamagundane e-kangaroo zigcina amandla azo ngamanzi (amanzi we-metabolic) atholakala ekudleni futhi akhiqizwa ngenxa yemetabolism. I-biomass yayo ephansi iphansi kakhulu, kanti i-biota ikhethekile kakhulu.

Ugwadule oludume umhlaba wonke izingwadule ezizungeze amaPoland kanye neGreat Sahara eNyakatho Afrika, iKerta Desert eNingizimu Afrika, iGobi e-Asia, kanye ne-Atacama Desert eNingizimu Melika. IGreat Sahara iyinkangala eshisayo enkulu kunazo zonke emhlabeni. I-Antarctica neningi leGreenland nazo zifakiwe ku-term term desert, ngakho-ke igama elithi "desert" alisetshenziswanga kuphela ezifundeni ezishisayo kepha nasezindaweni ezibandayo nezomile.

Izingwadule akuzona nje izindawo lapho amazinga okushisa ephakeme khona. Ngokwesibonelo, i-Antarctica iwugwadule olubandayo. Ngokungafani nezingwadule ezishisayo, isimo sezulu esikhona senza indawo embozwe yiqhwa kuphela ngoba iqinile.

Izizathu zokwakhiwa kwezingwadule zenzeka ngenxa yezici eziningana. Kunezinhlobo ezinhlanu zezingwadule ngokusho kwezizathu zazo zokwakheka. Lezi zingwadule ziyizingwadule ezishisayo, izingwadule zezwekazi, izingwadule ezisogwini ezakhiwe imisinga yamanzi abandayo, nezingwadule ezibandayo. Khumbula ukuthi sanikeza izwekazi lase-Antarctica njengesibonelo sezingwadule ezibandayo. Izici eziyinhloko ekwakhiweni kwezingwadule ingcindezi ephezulu, imisinga yamanzi abandayo, kanye nezwekazi. Lesi simo sichazwe ngezansi.

Sicela ukhethe isithombe sangemuva osithandayo sasogwadule bese usibeka njengesikrini sokukhiya noma isikrini sasekhaya ukuze unikeze ifoni yakho ukubukeka okuvelele.

Sibonga kakhulu ngokuseseka kwenu futhi sihlale samukela impendulo yakho mayelana nephephadonga lethu.