CD Skripsi

Dampak Drainase Dan Rewetting Lahan Gambut Di Areal Hti Akasia Terhadap Populasi Mikroba Dan Aktivitas Enzim Tanah Yang Berperan Dalam Mineralisasi Karbon

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Indonesia has large peat land areas. However, those areas nowadays are getting
decreased due to increasing of peat land conversion into Industrial Plantation
Forest (HTI) which is usually followed by drainage treatment. One of Indonesia's
drained peatlands for HTI acacia (Accacia crassicarpa) is located in Siak
Regency, Riau Province. Drainage causes a decrease in peat soil quality and able
to disrupt the continuity of carbon cycle. Rewetting with ditch blocking is well
known as best way to solve this problem. This study aimed to analyze the impact
of drainage and rewetting in HTI acacia on soil physic chemical characteristics,
microbial populations and enzyme activities such as cellulase, β-glucosidase,
chitinase and phenol oxidase in Siak Regency of Riau Province. Peat soil samples
were collected from both areas with drainage and rewetting treatment. Drained
soil were taken from HTI accacia, while rewetted soil were taken from areal with
several plots which have been planted Accacia crassicarpa (acacia), Swietenia
mahogani (Belangeran), Melaleuca leucacendra (Gelam), Cratoxylon
arborescens (Geronggang) and Campnosperma sp. (Terentang). Total population
of bacteria and fungi were determined by Total Plate Count method. The
cellulase, β-glucosidase, chitinase and phenol oxidase enzyme activities were
measured by colourimetry method. Soil physics chemical characteristics showed
variation in pH which were of pH 4,40-4,51, dry weight ranges on 0,19-27 g and
ground water content 73,03-81,47%. The total population of bacteria ranges on
0,88-2,92x109 CFU/g soil and fungi 0,32-1,83x104 CFU/g soil. Cellulase activity
ranges 0,54-0,73 μg glucose/hour/g of soil. The β-glucosidase activity ranges from
0,54-0,61 μmol pNP/hour/g of soil. Chitinase activity 0,061-0,075 μmol
pNP/hour/g of soil. The activity of phenol oxidase ranges 0,63-0,73 μmol
diqc/hour/g of soil. The cells number of bacteria, cellulase, β-glucosidase and
phenol oxidase enzyme activities decrease, while the number of fungi and
chitinase increase on rewetting peat land, The drained peatland in acacia HTI tend
to have high rates of carbon cycles than rewetted peatland.
Keywords: Drainage, rewetting, HTI acacia, soil enzyme activity, carbon cycle,
microbial population.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

03 04. 117 (0001)

Penerbit

Pekanbaru : Universitas Riau – FMIPA – Biologi., 2017

Deskripsi Fisik

xv. 62. hlm.: ill: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

03 04. 117 (0001)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

Asmawati

Versi lain/terkait

Lampiran Berkas

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