Savannas da Woodlands: siffofi na halitta yanki

Sanin daga labarin kasa darussa na farko ka'idojin, mafi yawan dalibai a daya murya ce cewa savanna da Woodlands - .. Daidai ne na halitta yanki a matsayin taiga, steppe, tundra, hamada, da dai sauransu. Wannan labarin da aka tsara don bayar da wani karin tabbataccen da kuma bayyana ra'ayi na Savannah, da Woodlands.

Gwargwadon matsayi

Saboda haka, Savannah, kuma Woodlands - wata halitta yanki, wanda za a iya samu ne kawai a wasu yanayin zones. Suna yadu rarraba a subequatorial zones a duka hemispheres, da kuma kananan yankunan suna located in da subtropics da yammacin sahara. More daidai, suna geographically located a kan rabi na nahiyar Afirka (game da 40% na jimlar yankin). Shin quite na kowa da savanna Woodlands da ma a kudancin Amirka, da arewaci da gabashin sassa na Asia (misali a Indochina), kazalika da a Australia.

Mafi sau da yawa shi ne wani wuri da kasa danshi ga al'ada girma Rainforest. Yawancin lokaci da suka fara da "cin" a cikin zuciya na nahiyar.

Zone Savannah da Woodland. sauyin yanayi Features

Domin mafi halitta yankunan babban dalilin da dabba ta fasali, Flora da kasar gona yanayin ne, na farko, da sauyin yanayi, da kuma kai tsaye zafin jiki da kuma yawan zafin jiki canje-canje (duka diurnal da yanayi).

Bisa ga sama fasali na Gwargwadon wuri na Savannah, shi ne a kammala da cewa ga duk yanayi na shekara ne halin da zafi weather a nan, wanda aka yi bikin a cikin hunturu bushe wurare masu zafi iska a lokacin rani, a maimakon haka, aka mamaye gumi Equatorial. Share bayanai daga yankunan da Equatorial bel, bi da bi, da sakamako a kan rage daga cikin damana zuwa m 2-3 watanni da halayyar shi 8-9. Shin mun gwada da barga yanayi zazzabi canje-canje - shi ya takaita matsakaicin bambanci ne 20 digiri. Duk da haka, yau da kullum bambanci ne manya-manyan - shi zai iya isa wani bambanci a kamar yadda 25 digiri.

ƙasa

Jihar na da gona, ta haihuwa ne kai tsaye dogara a kan tsawon lokacin ruwan sama lokacin da aka halin high leachability. Saboda haka, kusa da ekweita kuma da Equatorial gandun daji na halitta da sashi na savannas da Woodlands, kuma shi ne su ƙasa, a halin da babban abun ciki na ja gona. A wuraren da damana yana for 7-9 watanni, mafi kasa ne ferrallitic. Places da damana a cikin watanni 6 da kuma kasa "arziki" Sava ja-kasa-kasa kasa. A slabooroshaemyh yankunan da ruwan sama fadowa kawai wani lokaci na biyu zuwa watanni uku, kafa m kasar gona da sosai bakin ciki Layer na humus (humus) - har zuwa 3-5% na matsakaicin.

Ko da ƙasa kamar shroud, an amfani da su ayyukan mutane - mafi amfani da wadannan ana amfani da dabbobi dabbõbin kuma don girma daban-daban amfanin gona, amma saboda rashin iya amfaninka na riga matalauta yankunan juya zuwa tikis da kuma hamada yankunan, ba su iya kara ko ta yaya ya ciyar da mutane da dabbobi.

Biota

Don tsira a irin wannan maras tabbas yanayi, da dabbobi bukatar daidaita zuwa yankin, kamar yadda haƙĩƙa, a cikin dukan sauran yankuna. Savannas da Woodlands mamaki arziki fauna. Alal misali, a Afirka savanna yankunan zaune yawanci dabbobi masu shayarwa: .. rakumin dawa, dorina, da giwaye, wildebeest, hyenas, cheetahs, zakuna, zebras, da dai sauransu A cikin ƙasa na kudancin Amirka, akwai anteaters, armadillos, Jiminai, rheas, da dai sauransu suna da yawa .. da kuma yawan tsuntsaye -. yana da sananne sakataren tsuntsu, Afirka Jiminai, Sunbird, marabou, da dai sauransu a Australia, "mazauna" na savannas da Woodlands ne kangaroos da su marsupial uwan, daji dingo. Herbivores hijira a lokacin fari, zuwa yankunan mafi bayar da ruwa da abinci, da hanyar da wanda lokaci da kansu zama abubuwa na farauta mafi yara (da mutum ma). Common a savannas da tururuwai suka gina.

A kwatanta Flora wata halitta yankin, a matsayin savannas da Woodlands, ba shi yiwuwa ba a ambaci game da BAOBAB - ban mamaki itatuwa, kamar raƙuma tara ruwa reserves a cikin akwati. Har ila yau, kowa itacen ƙirya, epiphytes, itatuwan dabino, quebracho, itace cacti, da dai sauransu ... A lokutan fari, da yawa daga cikinsu ta jũya rawaya, ƙeƙashe, amma tare da isowa na sama sosai da dukan yanayi kamar yadda idan haife kuma da sake sa iso dabbobi tattara karfin da kuma shirya domin na gaba fari .