Semi madauwari

Ƙarƙashin madauwari (wanda kuma aka sani da demi-lune ko rabin wata) fasaha ce ta girbi ruwan sama wanda ya ƙunshi tono ramukan semilunar a cikin ƙasa tare da buɗewa daidai da kwararar ruwa.

Demi-lune a Burkina Faso.

Fage

Waɗannan ramukan suna fuskantar gangaren ƙasa, suna haifar da ɗan ƙaramin digo acikin yanki mai lanƙwasa tare da ƙasa daga ramin kanta, don haka suna kama ruwan sama da ke gudana a ƙasa.

Wadannan sifofin suna ba da damar ruwa ya shiga cikin ƙasa, yana riƙewa a cikin ƙasa mai yawan danshi. Amma kuma, yana hana asarar ƙasa mai albarka .

Ana amfani da bunds mai madauwari mai madauwari don sake dazuzzukan dazuzzukan dazuzzukan tare da yanayin ruwan sama ba bisa ka'ida ba, yana ba da damar ci gaban tsirrai da bishiyoyi, kamar acikin Sahe.

Duba kuma

• Zai
• Basin shiga ciki
• Noman noma
• Babban Green Wall
• Girbin ruwan sama a yankin Sahel