PENAKSIRAN NILAI EKONOMI KERUGIAN DAMPAK DEGRADASI DATARAN TINGGI DIENG

ADRI YULIA, Agus Affianto, S.Hut., M.Si.

2016 | Skripsi | S1 KEHUTANAN

Konversi kawasan lindung menjadi perkebunan tanaman kentang mengubah wajah dieng secara drastis. Degradasi berpotensi menimbulkan kerusakan lingkungan dalam skala yang besar. Dengan terjadinya degradasi Dataran Tinggi Dieng telah menyebabkan erosi yang berada di hulu dan mengakibatkan sedimentasi yang berada di hilir yaitu Waduk PB. Soedirman. Penelitian ini bertujuan untuk mengetahui dampak ekonomi yang terjadi akibat degradasi dataran tinggi Dieng dan mengetahui taksiran kerugian ekonomi akibat degradasi dataran tinggi Dieng. Pengambilan data sektor pertanian dan sektor energi menggunakan metode purposive sampling, dan sektor industri menggunakan metode stratified purposive sampling. Model analisis yang digunakan untuk menghitung kerugian di ketiga sektor menggunakan perubahan produktivitas dengan menghitung keuntungan yang diperoleh dari pendapatan dikurangi biaya. Hasil penelitian menunjukan bahwa terdapat 2 dampak primer yaitu pengurangan debit untuk irigasi sawah dan penurunan produktivitas PLTA Mrica. Dampak sekunder yaitu Pemadaman bergilir yang dirasakan pihak industri besar, sedang maupun kecil karena berkurangnya pasokan listrik se Jawa Bali. Kerugian dampak degradasi Dataran Tinggi Dieng sebesar Rp 13.606.740.000 per tahun dari kerugian PT. Indonesia Power, Rp.144.269.250.000 dari sektor Pertanian, Rp 11.782.804.635.000 per tahun dari sektor industri, baik industri besar, sedang maupun kecil.

The conversion of protected area to potato crop plantations had changed the plateau in a drastic way. The degradation which potentially may cause a great damage to environment. The degradation of the Dieng Plateau has produced erosion in upper course and has produced sedimentation that is located in downstream in PB.Sudirman water reservoir. The purpose of this research is to determine the economic impact which is caused by the degradation of Dieng plateau and to determine the estimated economic loss which is caused by degradation of Dieng plateau. The data was taken at agriculture sector and energy sector by using purposive sampling method, and in industrial sector using stratified purposive sampling method. The used analytical method was the change in productivity by calculating the benefits of cost-minus revenue. The result showed that there were two primary effects were reduction of discharge for irrigation of rice fields and declining productivity of Mrica hydropower. The secondary effects was continuous blackout that was perceived by the large industries, medium industries, and small industries, caused by reduced of power supply of Java - Bali. Loss due to degradation of Dieng Plateau was Rp.13.606.740.000 for PT. Indonesia Power, Rp.144.269.250.000 for agriculture sector, and Rp 11.782.804.635.000 per year from the industrial sector, both large industries, medium industries, and small industries

Kata Kunci : Degradasi, Nilai Ekonomi, Sedimentasi