Jamhuriyar Valley: Gwargwadon wuri, sauyin yanayi, musamman

Jamhuriyar Valley - a yankin dake a cikin cibiyar na Arewacin Amirka. Yana da wani low-kwance ƙasa, hada da filayen daban-daban iri: moraine, lake, rawayar} asa kuma outwash. A arewa maso gabashin iyakar da Appalachian dutsen tsarin a kudu-maso-gabas - tare da Laurentian Hills. A kudancin iyaka kai Gulf Coastal Bayyana. A arewa, ta Babbar ƙasar yankunan.

Filayen budewa na Amurka da kuma Canada. Inda za ka iya samun manyan Metropolitan yankin, wanda aka sani na da yankunan karkara da tattalin arziki da ayyukan. Wannan yanki ne sosai ci gaba. Wannan yana yuwuwa ta da taimako, da kuma yanayin damina. 75% daga cikin dukan ƙasar da ganye a karkashin ƙauyuka da gonakinsu. A mafi sanannen birni, aka located a nan, shi ne Chicago. Saboda haka, bari mu dubi ƙayyadaddu na ƙasa.

Features da topography na tsakiya sararan kasa

Jamhuriyar Valley Average tsawo na 150-500 m. Suna hada da kankara na Upper da kuma Lower Paleozoic wanda aka shirya horizontally da kuma jera karkata zuwa arewa. A arewa maso gabashin, inda filayen isa Great Lakes yankin taimako da aka gabatar a cikin nau'i na m ridges da asymmetrical gangara - cuesta. Suna hada da carbon fiber, Silurian da Devonian sediments. A mafi furta Cuesta kafa Silurian sediments. A daya daga cikinsu, a rarrabawa da ta kogin Niagara, ya kafa daya daga cikin shahararrun jan hankali na North America - Niagara Falls.

Jamhuriyar Valley ga mafi part rufe strata glacial adibas. Shi ne da bedrock a ƙasa. Wannan ya nuna cewa wannan yanki ya sha nanata an hõre rufe da shi glaciers, mai yiwuwa, a da Pleistocene lokaci.

A yankin - mafi densely lugar yankin na Arewacin Amirka. Wannan al'amari ya haifar tarihi. Mutane nan janyo hankalin m asashe, da kuma ya dade da yankin da ake amfani da aikin noma. A halin yanzu, fiye da kashi 90% na 'yan asalin ciyayi da aka halaka ta, da kuma cikin gandun daji-steppe da gandun daji maye gurbinsu da amfanin gona shuke-shuke.

A tsakiyar filayen ne m, dissected da kogin kwari taimako. Suna hada da sedimentary kankara - farar ƙasa. Kawai a kudancin surface na dutse fuska m - duwãtsu Boston, wanda shi ne wani hari na Appalachian tsarin. Average tsawo ya kai 600-800 m.

sauyin yanayi

Yanayin damina a yankin canza a latitudinal shugabanci. Ya kamata a lura da cewa su ne isasshe m. Babban tasiri a kan samuwar da sauyin yanayi da sanyi da kuma dumi igiyoyin zuwa daga Atlantic. Summer a Jamhuriyar sararan kasa dumi talakawan yanayin zafi na +20 ... + 22 ° C. A kudancin yankin ma'aunin zafi da sanyio iya tashi zuwa +28 ° C. Winter a wannan yankin shi ne sanyi, kuma m. Kusan a ko'ina cikin lokaci kiyaye misãlin yanayin zafi. Average isotherm Janairu - -12 ... -16 ° C. A talakawan shekara-shekara da ruwan sama shi ne 750-900 mm. Mafi yawansu ba su da dama a lokacin rani, amma a cikin hunturu shi snows sau da yawa, kafa wani barga snowpack. Mai girma da Jamhuriyar Valley da wajen kama sauyin yanayi.

albarkatun kasa

Wannan yanki ne na tattalin arziki muhimmanci. Jamhuriyar Valley samu a adibas na ci, da kuma man gas. akwai kuma mined tebur gishiri da kuma barite. Kwal ne a arewa maso gabashin, kusa da dutsen tsarin na Appalachians. A manyan filayen man fetur da ake located a arewacin Jamhuriyar filayen.

Flora da fauna

A Tsakiya sararan kasa yanki nasa ne da sashi na deciduous da kuma gauraye gandun daji. Duk da haka, tushen da ciyayi kiyaye kawai a kananan yankunan, rarraba ƙasar noma da makiyaya. Filayen dasa tare da hatsi da amfanin gona, masara. kawai hakori yada na Flora.

Jamhuriyar Valley - mafi muhimmanci da aikin noma yankin na Amurka. 85% na dukkan kayayyakin gona da ake samarwa a wannan yankin.