A gefen Arewa da Kudancin wannan duniyar tamu, a wajen yankin Equatorial, dazuzzuka masu zafin rana suna shimfidawa kamar wani sumul. Sun ari sunan daga yankin canjin yanayin da suke. Anan zaku iya samun nau'ikan nau'ikan nau'in bishiyoyi: bishiyoyi masu ɗan bango, myrtles, laurels, cypresses, junipers, rhododendrons, magnolias da yawancin bishiyun bishiyoyi.
Yankuna na gandun daji
Ana samun gandun daji na yanki a Amurka ta Tsakiya, West Indies, Indiya, Madagascar, babban yankin kudu maso gabashin Asiya, da Philippines. Sun kasance kusan kusan tsakanin wurare masu zafi a nesa da 23.5 ° da yankuna masu yanayi. Wannan yawanci yana nufin latitude 35-46.5 ° arewa da kudu na Equator. Dogaro da yawan ruwan sama da yake faɗuwa, an kuma raba su cikin ruwa da busasshiyar ƙasa.
Busassun gandun daji dake shimfide daga Rum zuwa gabas, kusan zuwa tsaunukan Himalaya.
Ana iya samun gandun daji:
- a cikin tsaunukan kudu maso gabashin Asiya;
- 'Yan Himalayas;
- a cikin Caucasus;
- a kan yankin kasar Iran;
- a jihohin Kudu maso Gabashin Arewacin Amurka;
- a latitude na Tropic of Capricorn a tsaunukan Kudancin Amurka;
- Ostiraliya.
Kuma a cikin New Zealand.
Sauyin Yanayi na gandun daji
Yankin busassun wurare yana da yanayin ɗakunan Bahar Rum tare da rani mai ɗumi da rani mai sanyi. Matsakaicin yanayin iska a cikin watanni masu dumi ya kai sama da + 200C, a lokacin sanyi - daga + 40C. Frosts suna da wuya sosai.
Gandun da ke karkashin ruwa mai tsiro yana girma a ƙarƙashin yanayi mai kama da wannan. Babban bambancin shine yanayin sauyin yanayi ne ko na damina, sakamakon haka ruwan sama yake da yawa kuma an rarraba shi a ko'ina cikin shekara.
Canjin yanayi zai iya faruwa a tsaunuka a wurare masu zafi, kamar yankin kudancin Mexico, Vietnam, da Taiwan.
Gaskiya mai ban mamaki, amma mafi yawan hamadar duniya suna cikin cikin suban subtropics, saboda ci gaban tudun ƙasa.
Forestasa mai yanayin yanki
Saboda duwatsun da ke samar da kasa, taimako na musamman, yanayi mai zafi da kuma busasshe, irin kasar gargajiya na busassun gandun dazuzzuka kasa ce mai toka tare da karancin humus.
Red ƙasa da ƙasa rawaya ne halayyar danshi subtropics. An ƙirƙira su ta hanyar haɗuwa da dalilai kamar:
- m, yanayi mai dumi;
- kasancewar oxides da duwatsun yumbu a cikin ƙasa;
- wadataccen ciyawar daji;
- nazarin halittu;
- taimako na samar da yanayi.
Forestananan gandun daji na Rasha
A gabar tekun Bahar Maliya na Caucasus da cikin Kirimiya, za ku iya samun gandun dazuka masu zurfin ciki. Mafi yawan itatuwa sune itacen oak, beech, hornbeam, Linden, Maple da kuma kirji. Boxwood, ceri laurel, rhododendron suna farantawa ido. Ba shi yiwuwa a fada cikin soyayya da kamshin turare na pine, fir, juniper da cypress. Ba don komai ba cewa waɗannan yankuna sun daɗe suna jan hankalin masu yawon buɗe ido da yanayinsu mai sauƙi da abubuwan warkarwa na iska kanta, cike da ƙamshin tsoffin itatuwa.
