PERTUMBUHAN TEGAKAN DAN PRODUKTIVITAS SERTA LAJU DEKOMPOSISI SERESAH BEBERAPA JENIS POHON LOKAL PADA LAHAN GAMBUT DI KABUPATEN PELALAWAN, RIAU
The information about stand growth performances, litter productivity and litter decomposition of some native tree species were important as the main information which will be used in tree species selection for pulpwood raw material. Research was done to obtain those informations. Research was carrie...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/130327/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=70747 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | The information about stand growth performances, litter productivity and litter
decomposition of some native tree species were important as the main information
which will be used in tree species selection for pulpwood raw material. Research was
done to obtain those informations. Research was carried out at February 2013 �
March 2014 in native tree species experimental plot that had 2 � 3 years old in
drained peat land in Pelalawan, Riau. This plot was established using completely
randomized block design, with 4 tree species as treatments i.e mahang (Macaranga
pruinosa), geronggang (Cratoxylum arborescens) and skubung (Macaranga
gigantean) as native tree species and krassikarpa (Acacia crassicarpa) as exotic tree
species (control). The growth performance was observed with census. Litter trap
method was used to obtain data of litter productivity and its nutrient input to forest
floor. Litter bag method was used to obtain data of litter decomposition rate and its
nutrient release to soil. Quantified and statistical technique (ANOVA/GLM, Duncan
test, correlation and regression analysis) were used as data analyzed method. The
results showed that survival rate of native tree species (68,0 � 90,0%) was
significantly (p < 0,05) better than krassikarpa (53,6%) at 3 years old. While, the best
growth performance at the same age displayed by mahang with height annual
increment were 2,54 m/year and DBH annual increment were and 2,92 cm/year. Its
DBH annual increment were similar to unimproved krassikarpa increment, but lower
than improved krassikarpa increment. The highest litter productivity and its nutrient
input were obtained by geronggang with magnitude 7,04 ton/ha/year and N released
60,69 kgha/year |
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