Abubuwan da suka shafi muhalli, suna da tasiri na aiyukan dan adam akan yanayin halitta, mafi yawan abin dake haifar da lalacewar muhalli. Kare muhalli al'ada ce ta kare yanayin a kan daidaikun mutane, kungiyoyi ko gwamnati, dan amfanin muhalli akan mutane. Muhalli, cigaban zaman takewa da muhalli, yana magance matsalolin muhalli ta hanyar ba da shawara, ilimin dokoki da gwagwarmaya.[1]
Lalacewar muhalli da mutane ke haifarwa matsala ce ta duniya mai gudana. Yawancin masana kuma suna tunanin cewa aikin ya kuma kai kololuwar yawan jama'ar duniya tsakanin mutane biliyan 9-10, zai iya rayuwa mai ɗorewa a cikin halittun duniya idan al'ummar bil'adama ta yi aiki don rayuwa mai ɗorewa a cikin iyakokin duniya.[2][3][4] Mafi yawan tasirin muhalli na faruwa ne sakamakon mafi yawan attajirai a duniya suna cin kayayyaki masana'antu da yawa.[5][6][7] Shirin Muhalli na Majalisar Dinkin Duniya, a cikin rahotonsu na "Samar da Zaman Lafiya Tare da Yanayi" a cikin 2021, an gano yana magance manyan rikice-rikice na duniya, kamar gurbatar yanayi, canjin yanayi da asarar rayayyun halittu, idan ɓangarorin suka yi aiki don magance Manufofin Cigaba mai dorewa.[8]