Suryanata P, Christian (2016) LAJU EROSI PADA AREAL REVEGETASI DENGAN KERAPATAN BERBEDA DI PIT INUL K WEST PT. KALTIM PRIMA COAL KECAMATAN SANGATTA UTARA, KABUPATEN KUTAI TIMUR, KALIMANTAN TIMUR. Other thesis, UPN "VETERAN" YOGYAKARTA.
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Abstract
INTISARI
Keberhasilan kegiatan revegetasi dapat terlihat dengan mengurangi atau
mencegah dampak buruknya suatu lahan saat dilakukannya kegiatan tersebut.
Penelitian ini dilakukan di areal revegetasi, dengan tiga lokasi pengambilan sampel
erosi di kerapatan vegetasi yang berbeda. Penelitian ini bertujuan untuk mengetahui
keterkaitan curah hujan dan aliran permukaan dengan laju erosi yang terjadi di areal
revegetasi PT Kaltim Prima Coal dan mengetahui laju erosi pada kerapatan berbeda.
Survey lapangan dilakukan untuk mengetahui kondisi lahan revegetasi
dilapangan dan penentuan lokasi pengambilan sampel. Petak kecil berukuran 22m x
2m dibuat pada 3 tempat dengan umur revegetasi berbeda. Mengukur kerapatan pada
tiap-tiap lokasi pengambilan sampel dengan metode kuadrat berukuran 2m x 2m.
Sampel pada petak kecil didapatkan jumlah aliran permukaan dan tanah tererosi dan
selanjutnya dilakukan analisis laboratorium untuk mengetahui berat basah dan berat
kering tanah tererosi.
Keterkaitan antara curah hujan dan aliran permukaan dengan laju erosi sangat
erat. Curah hujan akan menghasilkan aliran permukaan dan dengan adanya aliran
permukaan maka erosi akan terjadi. Faktor pengontrol seperti vegetasi, kedalaman
tanah sangat berperan sebagai pencegah atau mengurangi aliran permukaan sehingga
erosi dapat dihindari atau diminilaisir. Nilai laju erosi pada tiap plot dipengaruhi oleh
tingkat kerapatan vegetasi. Semakin rapat kerapatan, maka laju erosi semakin kecil.
Plot 1 memiliki kerapatan vegetasi paling kecil dari plot lainnya yaitu sebesar
105/100 m
2
dengan nilai laju erosi sebesar 39,06 kg atau nilai laju erosi terbesar
dibandingkan plot 2 atau plot 3.
Kata kunci : Laju Erosi, Metode Petak Kecil, Areal Revegetasi, Kerapatan Vegetasi
ABSTRACT
The success of revegetation activities can be seen to reduce or prevent the
bad effects of the land when such operations. This research was conducted at the
revegetation area, within three locations of erosion sampling in different vegetation
density. This research aims to find out determine the relationship of precipitation
and runoff at the rate of erosion in the area of revegetation PT Kaltim Prima Coal
and determine the rate of erosion at different densities.
Field surveys conducted to determine the condition of the field revegetation
land and determining the location of sampling. Small plots measuring 22m x 2m was
made in three different places with age revegetation. A mathematical method
calculating the rate of erosion using small plots of 22m x 2m, measuring vegetation
density using the method of least squares measuring 2m x 2m for undergrowth and
flow measurement surface, while the methods of laboratory analysis determined the
wet weight and the weight of dry soil to find out the large rate of erosion happen.
The link between rainfall and runoff with the erosion rate very closely. The
rainfall will produce runoff and the presence of the surface flow erosion will occur.
Factors such as vegetation control, soil depth was instrumental as a deterrent or
reduce runoff so that erosion can be avoided or diminilaisir. Value erosion rate on
each plot is affected by the density of the vegetation. The closer the density, the
smaller the rate of erosion. Plot 1 has the smallest vegetation density of the other
plots in the amount of 105/100 m2 with the value of the erosion rate of 39.06 kg or
the value of the largest erosion rate compared to plot 2 or 3 plots.
Keywords: The Rate Of Erosion, Small Plots Methode, Revegetation Areal,
Vegetation Density
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Sarimin Sarimin |
| Date Deposited: | 11 Oct 2016 07:59 |
| Last Modified: | 11 Oct 2016 07:59 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/7554 |
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