PENGARUH TATA GUNA LAHAN TERHADAP PENENTUAN STATUS MUTU AIR SUNGAI BABON DENGAN METODE INDEKS PENCEMARAN SEBAGAI UPAYA PENGELOLAAN DAS BABON

Winda Dwi Cahyani, Irawan Wisnu Wardhana, Endro Sutrisno

Abstract


Babon’s Watershed is one of watersheds in Central Java, which has a very important role for the sustainability of the system in the eastern part of Semarang which through Kabupaten Semarang, Semarang and Demak . Downstream part of the Babon’s river are the type of paddy land, dry land, forests, plantations and little settlements, while the lower reaches of the Babon’s river  dominated by land use type for settlements (ProLH-GTZ, 2005). Babon’s river water quality by calculation pollution index with scoring as follows: Water quality of segment 1 in Class I to class IV is Blackened Light. Water quality of segment 2 in Class I to Class III is the Blackened Light, and Class IV is a Good Condition. Water quality of segment 3 in Class I is the Blackened Medium , and Class II to Class IV is the Blackened Light. Water quality of segment 4 in Class I and Class II is Blackened Medium, Class III and Class IV is the Blackened Light. From the calculation of the pollution index Babon’s river water quality is still considered lightly blackened. Simulation results based on the parameters BOD, DO, Nitrate, Nitrite and Phosphate, indicating that the pollution index value has increased each year, so that could be said of the influence of land use change on river water quality status. Appropriate measures recommended in watershed management strategy given is a survival strategy. This strategy is done in trying to transform itself. Efforts repairs done by policies which are based on analysis of the strengths, weaknesses, opportunities and threats are held, to determine the policy efforts in watershed-management. Of the above strategies, the policy priority is to prevent water pollution and degradation of water quality by increasing the knowledge and participation of local communities in the watershed in the waste management and also improve waste management.


Keywords


Babon’s watershed, Landuse, Pollution Index

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