Mary Allen
Malo otentha ndi amodzi mwa madera anyengo omwe dziko lapansi limagawika. Amapezeka kumpoto ndi kum'mwera kwa dziko lapansi. Kumeneko angapezeke pakati pa subtropics ndi madera a polar. Germany, Austria, ndi Switzerland ali m'dera lotentha.
Ndizofanana ndi zone yotentha yomwe nyengo imadalira nyengo. Izi zikutanthauza kuti pali nyengo yozizira komanso yotentha. Kutentha kumasintha kwambiri pakapita chaka. Komabe, sizimasiyana mofanana kulikonse. Nthawi zambiri amakhala ochepa mphamvu m'mphepete mwa nyanja kuposa kumtunda. Zomwe zimachitikanso m'dera lotentha ndikuti kutalika kwa tsiku kumasintha ndi nyengo. Masiku amakhala aatali m’chilimwe ndipo m’nyengo yachisanu amakhala aafupi.
Dera lotentha limagawidwanso kukhala lozizira komanso lozizira. Kuzizira kozizira kumatchedwanso nemoral nyengo ndi akatswiri. Kuti tilankhule za nyengo yozizira, yocheperako, kutentha kwapakati m'mwezi wotentha kuyenera kupitilira madigiri 20 Celsius. Nkhalango zokhala ndi mitengo yophukira kapena nkhalango zosakanikirana zokhala ndi mitengo yophukira ndi ya coniferous nthawi zambiri imapezeka m'dera lozizira kwambiri. M’madera amene kugwa mvula yochepa kwambiri, monga ku Central Asia, kulinso mapiri a udzu ndi zipululu.
Dera lozizira lozizira limadutsa kumadera a polar. Kumeneko, kutentha kwapakati pa mwezi wotentha kwambiri kumakhala pansi pa 20 digiri Celsius. Nthawi zambiri nyengo yachisanu imakhala yaitali ndipo pamakhala chipale chofewa chambiri. M'madera ena, kutentha kwa minus 40 madigiri kapena kuchepera kumayesedwa m'nyengo yozizira. Nyengo zazifupi zimakhala zofatsa. M'masiku ena achilimwe, amathanso kutentha kwambiri. Akatswiri amalankhulanso za nyengo ya boreal kapena sub-polar nyengo. M'nkhalango, munthu amapeza pafupifupi mitengo ya coniferous. Malo amtunduwu amatchedwa taiga kapena "boreal coniferous forest". Kumpoto kuli tundra, komwe kulibe mitengo konse. Mawonekedwe amtunduwu ndi a malo ozizira otentha.