Efektivitas Reboisasi Terhadap Kualitas Air Sungai Siak Di Desa Maredan Kecam…

This study aims to knowing the physical and chemical parameters in Siak river water the Maredan Village Tualang District, and see the effect of upstream and downstream controls, in this case control Hulu Okura Village and control Downstream Ex PT Perawang Perkasa Industri. The methodology research that used was purposive sampling method. The data analysis used literature study based on the data…