Karin Bornett
Kuwonongeka kwa pulasitiki m'nyanja ndi kuwononga mpweya ndizovuta, ndizowona. Koma zomwe ambiri sanadziwebe ndikofunikira kwa thanzi la nthaka kwa anthu.
Nthaka ndi yamtengo wapatali topezeka, yomwe ili ndi humus yambiri ndipo imakhala ndi zamoyo zambiri. Pafupifupi magawo asanu a zinthu zopezeka m'nthaka zimapangidwa ndi zamoyo za m'nthaka: nyama, zomera, bowa ndi tizilombo tating'onoting'ono timatsimikizira kuti zachilengedwe zimagwira ntchito. Amapereka michere, imathandizira madzi kutuluka ndi mpweya wabwino, ndipo imawononga zinthu zakufa. Nthaka siloyambira chabe pazomera ndi nyama, komanso kwa ife anthu. Pafupifupi 90 peresenti ya chakudya padziko lapansi chimadalira nthaka. Anthu sangathe kudzidyetsa okha ndi mpweya, chikondi ndi nyama zam'madzi zokha. Nthaka yathanzi ilinso m'malo mosungira madzi akumwa.
Timawononga zomwe tili nazo - kuphatikiza nthaka
Koma pakadali pano tili paulendo wowononga chuma chamtengo wapatali ichi. Mtolankhani wasayansi a Florian Schwinn amalankhula za "kampeni yowononga" nthaka yanthaka ndipo akufuna "kuchititsa manyazi" ulimi. Chifukwa ulimi wamakampani, kugwiritsa ntchito mankhwala komanso kumangako dothi ndizo zikuchititsa kuti 23 peresenti ya malo padziko lapansi sangagwiritsidwenso ntchito ndipo mitundu ya zamoyo ikutha.
Mwachitsanzo, kafukufuku wa EU Ntchito yanthaka ndi mayunivesite khumi ndi umodzi omwe akutenga nawo gawo ku Europe komanso kafukufuku, zidakhazikitsidwa kale ku 2012 kuti ulimi wolimba umatsogolera kuwonongeka kwa zinthu zosiyanasiyana m'nthaka chifukwa umalimbikitsa kufinya, kukomoka komanso kukokoloka. Koma makamaka munthawi yamavuto anyengo, thanzi la nthaka ndilofala. Chifukwa ndi nthaka yokhayo yomwe imatha kusefukira ndi kusefukira kwamatope chifukwa cha Kusintha kwanyengo amawonekera pafupipafupi, kuthana nawo komanso kufooketsa. Choncho nthaka iyenera kutetezedwa.
pamene Msonkhano Wanyengo 2015 Nduna ya zaulimi yaku France yayamba ntchito yomwe ikufuna kulemeretsa nthaka ndi ma humus zikwi zinayi chaka chilichonse motero ikuchita nawo upainiya padziko lonse lapansi. Kupatula apo, malinga ndi omwe adalemba buku la "The Humus Revolution", Ute Scheub ndi Stefan Schwarzer, kumangidwa kwapadziko lonse lapansi kwa gawo limodzi lokha kungachotse ma gigaton 500 a CO2 mumlengalenga, zomwe zingabweretse zomwe zili mu CO2 lero mpweya kukhala wopanda vuto lililonse. Pakadutsa zaka 50 zitha kuchitika kubweretsa mpweya wa CO2 m'magulu asanachitike mafakitale - kuti thanzi la nthaka likhale labwino.
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