Abstract
The purpose of this study is to analyze the infiltration rate in land units with different types of land cover in the Banyu Irang Sub Watershed in the Maluka Watershed. Analyzing the volume and infiltration capacity of land units with different types of land cover in the Banyu Irang watershed in the Maluka Watershed. The method used in this research is the Horton method. Factors affecting infiltration are soil texture, soil bulk density, total soil porosity, soil organic matter, and soil moisture content. The results of the study show the value of the rate, volume dan capacity of infiltration, where the highest infiltration rate is found in the secondary forest land cover with a value of 145,5 mm/hr on land unit 19 with slope grade between 0-8% and the lowest infiltration rate is found in alang-alang (reeds) land cover with a value of 3,0 mm/hr on land units 32 with slope grade between 15-25%. The highest infiltration capacity and volume occurred in secondary forest land cover with a value of 83,490 mm/hr in land units 19. The lowest infiltration capacity and volume occurs in alang-alang (reeds) land cover with a value of 0,787 mm/hr on land units 1 and 0,846 mm/hr on land units 1.
Highlights
The purpose of this study is to analyze the infiltration rate in land units with different types of land cover in the Banyu Irang Sub Watershed in the Maluka Watershed
The results show that the highest infiltration rate was found in the secondary forest land cover with a value of 145,5 mm/hr on land unit 19 with slope grade between 0-8% and the lowest infiltration rate was found in alang-alang (reeds) land cover with a value of 3,0 mm/hr on land units 32 with slope grade between 15-25%
Saran Berdasarkan hasil penelitian yang telah dilakukan pada tutupan lahan alang-alang memiliki nilai infiltrasi rendah di bandingkan dengan tutupan lahan yang lain sehingga perlu upaya revolusi hijau untuk meningkatkan infiltrasi dan untuk mengurangi aliran permukaan (run off)
Summary
Hasil data yang diperoleh untuk kapasitas dan volume infiltrasi yang tertinggi terjadi pada tutupan lahan Hutan Sekunder yaitu sebesar 83,490 mm/jam pada unit lahan 1 dan 54,190 mm/jam pada unit lahan 19. 2. Laju infiltrasi pada hutan sekunder Berdasarkan pengambilan sampel di lapangan didapatkan hasil pengukuran laju infiltrasi pada lahan hutan sekunder dari berbagai lokasi yang dapat dilihat pada Tabel 2.
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