KAJIAN STRUKTUR VEGETASI DAN DINAMIKA HARA DI HUTAN HUJAN TROPIKA BASAH DAS KAHAYAN PROPINSI KALIMANTAN TENGAH
Tropical rain forest has a specific ecosystem, and it can be well preserved caused by to the linkage amongs the constituent components inside as a whole unity. The forest ecosystem can be preserved if it could maintain the mechanism of nutrient cycling and its high diversity. Then, this closed nutri...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2012
|
| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/99903/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=56054 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Universitas Gadjah Mada |
| Summary: | Tropical rain forest has a specific ecosystem, and it can be well preserved
caused by to the linkage amongs the constituent components inside as a whole unity.
The forest ecosystem can be preserved if it could maintain the mechanism of nutrient
cycling and its high diversity. Then, this closed nutrient cycling become dynamics of
nutrient in the forest system and it runs well due to an appropriate output of nutrient.
The area of tropical rain forest in the study location was the area that ever logging by
Forest Management Right (HPH: Hak Penguasaan Hutan) and wood of bansaw
processing that operated illegally in some, thus it is possibly for changing of
composition and structure inside and the nutrient cycling process that will be occured in
the forest ecosystem and it will be disturbed by the increasement of lost or the loose
nutrient substances to the watersheds ecosystems.
This study was conducted to : 1) Study the composition, structure and diversity
of kind of forest vegetation composition, 2) Study the community path of forest stand,
3) Study nutrient input contain in the soil of the throughfall, stemflow, and nutrient
output through the river by suspensition soluble and basic sediments, 4) Study the
balance of nutrient the forest and watersheds ecosystem.
This study was performed by determining the observation blocks based on the
overlay of topographic or slope map. Then, the overlay results of each sub watersheds
were divided into some observation or releve tracks. The study tracks were divided
based on the level of slope of 0-2%, >2-8%, and >8-15%. Each releve was made by
measurement cabins with different wide based on the level of growth: seedling, sapling,
pole, and tree. The structur of vegetation was observed by making the quadrilateral
lane of 200 ft (61 metres) x 25 ft (7.6 metres), they was mapped and noted the
diameter, high of crown, high of branch, and width of crown of tree. It was noted the
species which the highmore than 4.5 metre, and then it was made the vertical
projection from trees lied in the observation track and the results would be a profile
diagram. The community path was known by conducting ordinance analyses of two
dimensions, then it counted the value of Variety Index of Diversity using the data of
vegetation in each observation track.
The result of the study on vegetation showed that the composition of vegetation
kind in each watersheds in all level of growth was dominated by the kinds of
Dipterocarpaceae family. The community path of vegetation in all levels of growth
had the similar paths of community, it was only different in the grouping path of pole
level in sub watersheds of Rungan. Level of growth of seedling and pole had the lower
value of diversity in all sub watersheds ecosystem. The structure of vegetation had 3
(three) layers of crown, that were dominated by the kinds of Dipterocarpaceae family.
It was quite high the output of nutrient substance through the basic sediment,
and this showed that there was leakage of nutrient, Subs Watersheds : Kahayan P total
(-140.2433), P tsd (-59.1233), K total (-409.1667), K tsd (-33.2933), Ca (-6.7633) |
|---|