STRUKTUR DAN KOMPOSISI HUTAN MANGROVE DI TELUK PANGPANG TAMAN NASIONAL ALAS PURWO
| Main Authors: | , Dian Sulastini, S.Si, , Dr. Erny Poedjirahajoe, M.P. |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2011
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/89107/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=51318 |
Daftar Isi:
- Alas Purwo National Park is a nature conservation area which has some vegetation formations, including the formation of mangrove forest. Research on the structure and composition of mangrove forests in the Pangpang Bay, Alas Purwo National Park aims to determine population and community structure and species composition of mangrove forests in the Pangpang Bay, Alas Purwo National Park. This research was carried out in the Pangpang Bay Alas Purwo National Park with an area of 198 Ha. The used method is a combination of terraced path line methods. Vegetation analysis performed on 15 lines of observation. At each point, it is made the observation plots 2 x 2 for seedlings, 5 x 5 m for saplings and 10 x 10 m for the pole and tree. Data are analyzed to determine the population structure by dividing the diameter of the plant that got into 13 class intervals of 1.5 cm diameter. Knowing the community structure is an important value indices, diversity indices and spatial distribution. The results show the number of individuals at the trees level with the minimum number (366,23 individuals/ha), followed by pole (961,64 individuals/ha), saplings (1.777,05 individuals/ha), and the highest is the number of individuals at the seedling (7.918,03 individuals/ha). C. tagal is a type that has the highest IVI value at three levels, namely the growth of seedlings, saplings, and poles. While at the tree level, the highest IVI value is owned by R. apiculata. Diversity index of mangroves in the Pangpang Bay, Alas Purwo NP is calculated using the Shannon Wiener index with values ranging from 0.9718 (at the seedling level) to 1.6448 (at tree level). Spatial distribution obtained there are 2 patterns, namely clumped and uniform patterns / regular. The species has a relatively large number of individuals which have a clumped dispersion pattern (Bruguiera gymnorrhiza, Bruguiera sexangula, Ceriops tagal, Rhizophora apiculata, Rhizophora mucronata, Sonneratia alba), whereas the types which have a relatively small number of individuals have a pattern of uniform / Regular (Aegiceras corniculatum, Avicennia lanata, Avicennia marina, Ceriops decandra, Excoecaria agallocha, Heritiera littoralis, Lumnitzera rasemosa, Xylocarpus mollucensis), except X. granatum which has small amounts but it had a clustered pattern.