Filaye, dazuzzuka da muhalli daban-daban: yawan kudin noma
Kiwo yana amfani da kashi 77% na gonaki kuma yana samar da kashi 18% na adadin kuzari. Wannan rabo ne dalilin da ya sa amfani da filaye—ba kawai iskar gas ba—shi ne mafi tsananin gardama ta muhalli.
A takaice
- Rabin filayen da za a iya zama a kai noma ne; kiwo da abincinsu suna mamaye kashi 77% na shi.
- Noma shi ne babban abin da ke haddasa sare dazuzzuka, kuma kiwon shanu yana haddasa mafi yawan share fage a Amazon.
- Rayuwar dabbobin daji ta ragu yayin da dabbobin gida yanzu sun fi na daji girma sau da yawa.
- Canjin duniya na kawar da kayayyakin dabbobi na iya 'yantar da kusan hekta biliyan 3, wanda zai haifar da kyakkyawar dama don maido da yanayin halittu da adana carbon.
Mahimman lambobi
Asarar inganci tana da alaƙa da thermodynamics
Canza abincin dabbobi zuwa abincin mutane yana ɓatar da yawancin kuzarin abincin. Ingancin canjin ya bambanta ta nau'in da tsarin samarwa. Cin amfanin gona kai tsaye gabaɗaya yana buƙatar ƙarancin ƙasa, kodayake dabbobin kiwo kuma na iya amfani da ciyawa da sauran kayayyakin amfanin gona waɗanda mutane ba za su iya ci ba.
Sare dazuzzuka yana bin buƙatu, ba iyakoki ba
Kusan kashi uku bisa huɗu na waken soya na duniya ana amfani da shi azaman abincin dabbobi, galibi azaman abinci bayan an ciro mai. Nama da waken soya muhimman direbobi ne na sare dazuzzukan wurare masu zafi. Kasuwanci da buƙata na iya canza samarwa, don haka takaddun shaida da ƙa'idodin shigo da kaya suna buƙatar tsarawa da aiwatarwa da hankali.
- Asarar dazuzzukan wurare masu zafi na farko ya bambanta sosai bisa ga shekara da yanki.
- Filayen da aka share suna fitar da carbon da aka adana nan take kuma suna rasa damar adanawa a nan gaba.
- Gobara da ake amfani da ita don share fage tana haifar da tasirin lafiya na yanki mai nisa daga gona.
Bambancin halittu: canjin amfani da filaye shine babban tsarin
IPBES ta gano canjin amfani da filaye a matsayin babban abin da ke haifar da asarar bambancin halittu na ƙasa, gabanin canjin yanayi. Noma shine babban nau'in wannan canji. Kiwo kuma yana fafatawa da dabbobin daji don ruwa da ciyawa kuma yana haifar da shirye-shiryen kashe masu farauta a duk faɗin nahiyoyi.
Maido da filayen da aka 'yanta shine hanyar da aka rasa
Kididdigar farashin damar carbon ta nuna cewa maido da ciyayi a kan filayen da ake amfani da su yanzu don aikin noma na dabbobi zai iya adana gigatonnes ɗari da yawa na CO₂ sama da shekaru da yawa — kwatankwacin shekaru goma ko fiye na iskar gas na duniya, kuma ana iya cimma shi ba tare da sabon fasaha ba.
Bayanan
Rarraba nauyin halittu masu shayarwa, wanda aka auna azaman carbon (Bar-On et al., 2018)
- Dabbobin gida60 %
- Mutane36 %
- Dabbobin daji4 % · ragowar
A kallo
Filayen da ake buƙata don samar da g 100 na furotin
| Abinci | Filaye m² | Dangane da wake | Babban matsin lamba |
|---|---|---|---|
| Naman sa (kiwon shanu) | 164 | 48× | Sare dazuzzuka, methane |
| Ragon | 185 | 54× | Yawan kiwo |
| Cuku | 39.8 | 12× | Gonar abinci |
| Alade | 11 | 3× | Waken soya |
| Kaji | 7 | 2× | Waken soya |
| Tofu | 2.2 | 0.6× | Kadan |
| Wake | 3.4 | 1× | Kadan |
Ra'ayoyin gama gari
Da'awaVegans ne ke haddasa noman waken soya.
Abin da hujjoji suka nunaKusan kashi uku na waken soya na duniya ana ciyar da shi ga dabbobin gona; abincin waken soya kai tsaye na mutane yana da ƙaramin kaso na samarwa.
Da'awaFilin kiwo ba zai iya noma amfanin gona ba ko ta yaya.
Abin da hujjoji suka nunaWasu ba za su iya ba — amma ana iya maido da ƙananan filaye zuwa daji ko ciyawa, wanda shine amfani ga yanayi maimakon ɓata lokaci.
Da'awaAsarar bambancin halittu galibi game da canjin yanayi ne.
Abin da hujjoji suka nunaIPBES ta sanya canjin amfani da filaye a farko, kuma noma shine babban abin da ke haddasa shi.
Tambayoyin da mutane ke yi
- Nawa ne fili da duniya mai cin ganyayyaki zai 'yanta?
- Kusan hekta biliyan 3, kusan kashi 76% na filayen noma na yanzu, bisa ga nazarin Poore & Nemecek.
- Shin kiwon shanu ne da gaske ke bayan asarar Amazon?
- Haka ne — sa ido na INPE da binciken masu zaman kansu sun danganta yawancin share fage ga kiwo, tare da gonakin abinci suna biye da su.
- Shin maido da yanayi zai adana carbon da gaske?
- Haka ne. Dazuzzuka da ciyawa da aka maido suna tara carbon na tsawon shekaru da yawa; damar tana da girma zuwa gigatonnes ɗari na CO₂.
- Me game da kiwon dabbobi mai sabuntawa?
- Samun carbon a cikin ƙasa gaskiya ne amma kaɗan, yana cika cikin shekaru da yawa, kuma yawanci methane da buƙatun filaye sun fi shi ƙarfi.
- Shin cin abinci mai ƙarancin kiwo yana taimakawa wajen amfani da filaye?
- Ee - cuku yana amfani da kusan sau goma sha biyu kuma madara kusan sau takwas fiye da wake na peas ga kowane 100 g na furotin a cikin bayanan matsakaicin duniya.
Tushe
An samo alkaluma daga tushen da aka jera a karshen wannan jagorar.
- Our World in Data — Land use
- IPBES — Global Assessment Report on Biodiversity
- Bar-On, Phillips & Milo — The biomass distribution on Earth
- Hayek et al. — The carbon opportunity cost of animal-sourced food
- FAO — Land use in agriculture
Rubutun wannan shafin yana da 'yancin sake amfani da shi a karkashin CC BY 4.0 tare da dangantawa ga Veg.ac.
Ci gaba da karatu
Juyar da hujjoji zuwa abinci na mako guda
Shirin farawa na kwanaki 7 yana fassara duk abin da ke sama zuwa jerin siyayya da girke-girke masu sauƙi.