Shuke-shuke halittu ne masu hankali wadanda ke da ikon haɓaka halaye daban-daban don dacewa da yanayin. Yanayi da yanayin zafi na iya haifar da nau'ikan halittu su rikide kan al'ummomi masu zuwa don fuskantar tsaiko.
A cikin masarautar shuka, akwai tsire-tsire masu tsire-tsire, waxanda suke tsire-tsire masu tsire-tsire da kuma ɗan tazara tsakanin node ganye. Abubuwan halaye na waɗannan tsire-tsire ba don kansu bane amma kuma yana da nasaba da wannan ƙarfin daidaitawar da yawancin jinsuna suka ɗauka.
Daidaitawa
Kalmar "sclerophyllous" ta fito ne daga Girkanci saboda "sklērós" na nufin wuya. Sunan yana nufin Siffar yanayin halittar shuke-shuke don daidaitawa zuwa dogon lokaci na fari da zafi sun sami ci gaba mai wuya maimakon ganye masu taushi da gajerun hanyoyin ciki, ma'ana, ɗan gajeren tazara tsakanin node ganye. Wadannan ganye suna da ƙarfi sosai, suna da fata kuma suna da ƙarfi domin jure dogon lokaci na fari. Gabaɗaya, suna faruwa tare a wasu yankuna don haka sun zama gandun daji. An rufe ganyayyaki masu tauri tare da resin da ake kira sclera.
Don gano halayen tsire-tsire masu tsire-tsire, ya isa a kiyaye saboda su ne shuke-shuke na katako kuma suna da ganyaye masu wuya na girman karimci wanda yake na arboreal ko na shrub. Saboda haka, daga cikin misalan shahararrun tsire-tsire masu tsire-tsire bayyana myrtle, da Espino steppe, the maquis, the Espinal, daban-daban ƙaya, da boldo, da quillay, da lita, da colliguay, da romerillo da sauran shuke-shuken ganye da ganye. Nau'in halittar sclerophyllous na yankin Iberian Peninsula shine holm oak, carob, bishiyar kermes ko itacen oak.
Baya ga waɗannan halaye, tsire-tsire masu tsire-tsire raba wasu halaye: yawancin jinsuna suna shekara-shekara yayin da suke rayuwa da yawa, shekaru da yawa. Bugu da ƙari, ya ƙunshi jinkirin girma shuke-shuke hakan baya rasa ganye kuma yakan zama kore koyaushe. Wannan rukuni na shuke-shuke yana da sifofi na sama da na karkashin kasa wadanda aka canza su gwargwadon bukatun ruwa na shuka, tunda wannan bambance-bambancen ne ta yadda zai ba da damar samun biyan diyya don daidaituwar shuka.
Shuke-shuke masu yaduwa a cikin duniya
Kodayake zamu iya samun tsire-tsire masu tsinkaye a duk sassan duniya, yankunan busassun da busassun wurare sune wuraren da ake yawan samun su. Abu ne gama gari a gansu a cikin Nahiyar Afirka, a Ostiraliya, a wasu yankuna na Kudancin Amurka da kuma yammacin Amurka. Koyaya, yana yiwuwa kuma a same su a cikin yankunan Bahar Rum a wasu yankuna na Turai da Kudancin Amurka.