KAJIAN TOTAL BIOMASSA RERUMPUTAN DAN PENGARUHNYA TERHADAP TATA AIR TANAH DI DAERAH TANGKAPAN AIR DANAU TOBA. STUDI KASUS DI KECAMATAN SILAHISABUNGAN KABUPATEN DAIRI

Sahala M Manurung, Abdul Rauf, Razali Razali

Abstract


The study on the total of biomass of grasses and it’s influences on soil moisture was conducted at
Silahisabungan Subdistrict Dairi District, from November 2011 until February 2012. The objective
of this research was to evaluate the effect of grasses to soil mositure. This study used survey method
with purposive sampling. The result of this research showed that grass vegetation with rather
sloping class total biomass 10,6 ton/ha, carbon reserve 5,3 ton/ha, field capacity 63,4 %, permanent
wilting point 1,3 %, water content 62,0 % and permeability 7,5 cm/hours. In the undulating slopes
total biomass 7,1 ton/ha, carbon reserve 3,55 ton/ha, field capacity 51,6 %, permanent wilting
point 2,4 %, water content 49,2 % and permeability 7,6 cm/hours. In the rather steep slope total
biomass 15,5 ton/ha, carbon reserve 7,75 ton/ha, field capacity 32,8 %, permanent wilting point 3,8
%, water content 29,0 % and permeability 9,6 cm/hourd. In the forest vegetation with rather sloping
class, biomass total 7,54 ton/ha, carbon reserve 3,77 ton/ha, field capacity 150 %, permanent wilting
point 23,5 %, water content 126,5 % and permeability 10,3 cm/hours. In the undulating slopes total
biomass 6,24 ton/ha, carbon reserve 3,12 ton/ha, field capacity 51,5 %, permanent wilting point 7,5
%, water content 44 % and permeability 8,2 cm/hours. In the rather steep slope total biomass 8,86
ton/ha, carbon reserve 4,43 ton/ha, field capacity 33,3 %, permanent wilting point 4,2 %, water
content 29,2 % and permeability 11,25 cm/hours.
Key words: biomass, soil moisture, toba lake water catchment area

Full Text: PDF

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

Creative Commons License Creative Common Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)


Program studi Agroteknologi

Fakultas Pertanian

Jl. Prof. A. Sofyan no. 3

Kampus Universitas Sumatera Utara

Padang Bulan- 20155

Medan-Sumatera Utara

E ISSN (2337-6597)