Masana kimiyya suna nuna damuwa game da mummunan raguwar kwari, ba tare da abin da ci gaban samar da aikin gona zai kasance a cikin tambaya ba. Wannan duk da gaskiyar cewa wasu nau'ikan kwari, akasin haka, suna haifar da mummunar lalacewar ciyayi.
Masana sun nanata cewa a mafi yawan raguwar kwari shine sakamakon ayyukan da mutum yayi shi. Canjin yanayi ɗaya ne kawai, amma yana nesa da babban dalilin rage kwari a duniya.
Waɗannan sune ƙarshen binciken game da raguwa sosai na kwari - ƙwaƙwalwar entomofauna. Rahoton ya kasance kwararru ne daga Jami'o'in Sydney da Queensland daga Ostireliya da Kwalejin Kimiyya ta Cina. Anan ga masana kimiyya sun zo.
A halin yanzu, kashi 40 cikin dari na dukkan nau'ikan kwari suna fuskantar barazanar lalata, kuma an rage kwayar halittar kwari a duniyarmu da kashi 2,5% a shekara. Bayan shekaru 50, biomass na wadannan halittun zasu iya raguwa da rabi. Kuma irin wannan raguwa mai kaifi, a cewar masana, na iya haifar da "masifa" ga duka yanayin halittu.
Har zuwa kwanan nan, an ba da babbar kulawa ga kariya da adana nau'ikan kifaye da manyan dabbobi masu shayarwa, kuma kwari basu da kulawa sosai. A halin yanzu, kashi 60% na tsuntsaye suna ciyar da kwari. Wannan yakai tan miliyan 500 a shekara.
Wani cikakken bayani. 80-90% na tsire-tsire na daji sun dogara da kwari don pollination. Wasu nau'in kwari suna lalata lalacewar mutane, yayin da wasu ke sarrafa adadin waɗannan kwari iri guda. A shekara ta 2006, Amurka ta kiyasta cewa fa'idodin ayyukan "kwari" ya kai dala biliyan 57 a shekara. Ya kamata a lura cewa kwanan nan ya fara magana game da yaduwar amfani da kwari don ciyar da dabbobi. Masu karatu na KV, musamman, ba da daɗewa ba zasu iya koyo game da shirye-shiryen Saudiyya na gina gonaki na musamman don haɓaka kwari don amfanin su na gaba a cikin kiwo.
Hakanan sanannu ne cewa a cikin ƙasashe da yawa na Asiya da Afirka, kwari da yawa ana amfani da su azaman samfuran abinci na gaske. Yawan jama'ar yankin sun yi ta amfani da kwari shekaru dubbai. Ita ma FAO ta buga wani rahoto a 'yan shekarun da suka gabata da ke kiran babbar amfani da irin wannan tsarin a sauran sassan duniya. Duk wannan dole ne a la'akari dashi.
Marubutan wannan sabon binciken sun nuna manyan abubuwan da ke haifar da hana kwaro a cikin duniya. Wannan, da farko, asarar mazauna saboda farawar birane (birane), da haɓaka aikin gona mai zurfi. A wuri na biyu shine tasirin kwayar halitta kan kwari, da amfani da kayan aikin kariya na sinadarai, da sauransu.
A ƙarshe - canjin yanayi da yanayin zafi, wanda ke shafar kwari, musamman a yankuna masu zafi na duniya.
source: http://kvedomosti.ru