Central Valley: indawo, isimo sezulu, ikakhulukazi

Central Valley - isifunda etholakala maphakathi eNyakatho neMelika. Kuyinto sezwe ongaphakeme-amanga, eyakhiwa emathafeni ezinhlobo ezehlukene: moraine, ichibi, loess futhi outwash. Esikhathini umngcele enyakatho-mpumalanga Appalachian uhlelo entabeni eningizimu-mpumalanga - ne Laurentian Hills. Ongaseningizimu ifinyelela Gulf Coastal Plain. Enyakatho, zibheke ezindaweni umhlaba Omkhulu.

Emathafeni yokwelula US nase-Canada. Lapho ungathola endaweni amakhulu, okuyinto semisebenzi yalo yasemakhaya kwezomnotho ezaziwayo. Le ndawo kahle athuthukile. Lokhu lula impumuzo, futhi isimo sezulu. 75% yonke insimu amaqabunga ngaphansi nemizana namasimu. Umuzi odume kakhulu, itholakala lapha, kuyinto Chicago. Ngakho, ake sibheke imininingwane zensimu.

Izici kanye nesimo sendawo we Central Plains

Central Valley Isilinganiso ukuphakama 150-500 m. Basuke eyakhiwa kwamadwala Upper futhi Lower Paleozoic zazo wahlela nendawo futhi ngokwengxenye enalokho kuthambekela enyakatho. Ngo-mpumalanga, lapho emathafeni ukufinyelela Lakeland impumuzo endaweni uvezwa uhlobo emikhulu engajulile nge emithambekeni azilingani - cuesta. Basuke eyakhiwa carbon fibre, Silurian futhi inhlabathi Devonian. I Cuesta buphawuleka kakhulu kwakhiwa inhlabathi Silurian. On omunye wabo, ezimpambanweni zomgwaqo u yayo emfuleni Niagara, walibumba omunye ezikhangayo edume kakhulu eNyakatho neMelika - Niagara Falls.

Central Valley ingxenye enkulu embozwe kwezakhi imali glacial. Kuyinto Bedrock ngaphansi. Lokhu kusikisela ukuthi kule ndawo ngokuphindiwe sezithotshiselwe phansi imbozwe izinguzunga zeqhwa, cishe esikhathini Pleistocene.

Le ndawo - esifundeni elinabantu abaningi lweNyakatho Melika. Leli qiniso sekukhona ngokomlando. Abantu lapha bakhangwa emazweni ovundile namathantala sekuyisikhathi eside esifundeni isetshenziselwa ezolimo. Okwamanje, ezingaphezu kuka-90% kanjalo izimila zomdabu ibhujisiwe, futhi ihlathi-asemaqeleni kanye ihlathi sithathelwe indawo izitshalo.

Emathafeni asenkabeni kukhona inamagquma, dissected ngasemfuleni izigodi impumuzo. Basuke eyakhiwa rocks sedimentary - namathempeli ngokhonkolo namatshe. Kuphela sesihlasela ingxenye eseningizimu ye ebusweni emadwaleni enamadwala - ezintabeni Boston, okuyinto sangaleso uhlelo Appalachian. ukuphakama Isilinganiso ifinyelela 600-800 m.

Isimo sezulu

Isimo sezulu esifundeni washintsha ohlangothini latitudinal. Kufanele kuqashelwe ukuthi zingabantu ngokwanele evumayo. nethonya elikhulu kumiswa sezulu imisinga abandayo futhi efudumele ivela Atlantic babe. Summer e Central Plains okushisa efudumele isilinganiso +20 ... + 22 ° C. Esifundeni eseningizimu-thermometer ongasukuma ukuze +28 ° C. Winter kule ndawo kubanda futhi nesithwathwa. Cishe phakathi nayo yonke inkathi kugcinwe amazinga okushisa angaphansi kwezinga-qhwa. isotherm Isilinganiso Januwari - -12 ... -16 ° C. Imvula yonyaka 750-900 mm. Iningi lazo uwela ehlobo, kanti ebusika ke snows ngokuvamile, ukwakha snowpack esitebeleni. Abakhulu Central Valley babe sezulu kunalokho efanayo.

kwemithombo yemvelo

Le ndawo ibaluleke kakhulu kwezomnotho. Central Valley ezitholakele ku ezifakwa kwamalahle, uwoyela negesi. khona nazo misela ithebula usawoti kanye barite. Yamalahle ezifakwa ku-mpumalanga, eduze uhlelo entabeni Appalachians. A Amasimu ezinkulu samafutha zitholakala enyakatho Central Plains.

Yezimila nezilwane ezihlukahlukene

Abe-Central Plains endaweni kungokwalabo indawo ye lezihlahla namahlathi okuxubile. Nokho, izimila impande walondoloza kuphela ezindaweni ezincane, uhlukanisa yokulima kanye namadlelo. Fields itshalwe nge kutshalwe izilimo, ummbila. namagundane kuphela ukusakaza izitshalo.

Central Valley - ebaluleke kakhulu kwezolimo sifunda sase-United States. U-85% yonke imikhiqizo yezolimo ukhiqizwa kule ndawo.