Manajemen No. 2 : 7-18 (2001)
RESPON HIDROLOGI DAERAH
SUNGAI (DAS)
BERHUTAN JATI
(Tectona
(Studi Kasus di DAS Cijurey,
KPH
PT. Perhutani Unit
Jawa
Hydrological response of teak (Tectona
forested watershed
(Case Study in Cijurey Watershed, Forest Management Unit of
Purwakarta, PT Perhutani Unit
Jawa
NANA dan
ABSTRACT
The discharge of the upper Cijurey watershed (4.21 7 was using an automatic water level recorder since 1999. The teak (Tectona plantations of age classes cover the whole watershed. The is dominated by undulating topography with gentle slopes, low soil and also low potential aqu flow rate.
Hydrograph analysis shows that high peak flow reached 32.5 (1.3 while concentration time (TJ and recession rime were 2 hours and 3 hours, respectively. observations on stream flow shows that maximum discharge was more than 2 m high, which caused flood, while for two successive months (August and September. 2000) the river at the watershed out let was totally dry. These hydrograph properties indicated the quite bad hydrological response of the watershed.
PENDAHULUAN
Pembangunan jati di Pulau Jawa telah dilakukan sejak pemerintahan kolonial Belanda. jati di P. Jawa umumnya terletak di dengan hujan sedang sampai Pengaruh jati terhadap tata air dan perlindungan (hidro-orologi) di P. Jawa jarang
kan, berbeda dengan keberadaan yang sering dianggap sebagai penyebab berkurangnya produktivitas air dari berhutan Hal ini mungkin disebabkan karena lokasi jati umumnya di daerah sedangkan
umumnya di daerah pegunungan.
Penelitian dan vegetasi terhadap pengaturan tata air dan perlindungan belum dilakukan di Indonesia, khusunya untuk jenis jati, rasamala dan jenis-jenis lainnya yang merupakan kelas perusahaan di PT (Perum) Perhutani.
Peneliti dan Staf di Lab. Pengaruh Manajemen
