Kajian Populasi Dan Analisis Spasial Tanaman Endemik Dipterocarpus littoralis Blume Di Pulau Nusakambangan

Yulia, Helmi Mukti (2019) Kajian Populasi Dan Analisis Spasial Tanaman Endemik Dipterocarpus littoralis Blume Di Pulau Nusakambangan. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dipterocarpus littoralis (nama lokal : plahlar) saat ini masih merupakan spesis endemik di Pulau Nusakambangan. Spesies endemik ini mengalami ancaman dari spesies invasif dan akibat aktivitas manusia di Pulau Nusakambangan. Menurut IUCN (2008) D. littoralis berada dalam status critically endangered sehingga kondisinya terancam diambang kepunahan. Status spesies D. littorlis menyebabkan perlunya skala prioritas dalam melakukan kegiatan pengelolaan kawasan untuk kepentingan konservasi jenis tersebut. Upaya konservasinya perlu didukung dengan pemahaman tentang aspek ekologi dan distribusi D. litoralis. Sehingga dalam penelitian ini dilakukan observasi untuk menganalisis kajian populasi D. litoralis serta membangun model spasial jenis D. littoralis di Pulau Nusakambangan, khususnya di luar kawasan Cagar Alam Nusakambangan Barat. Kajian populasi dilakukan menggunakan metode Transect Line Plots dengan teknik purposive sampling dan analisis spasial D. littoralis menggunakan model Sistem Informasi Geografis (SIG) dengan teknik overlay. Pengamatan dilakukan pada habitus tumbuhan yang berbeda yaitu semai, pancang, tiang, dan pohon. Hasil penelitian menunjukkan bahwa nilai INP Dipterocarpus littoralis pada tingkatan habitus semai< pancang< tiang< pohon. Jumlah yang ditemukan sebanyak 164 individu D. littoralis yang tersebar pada 3 zona yaitu zona A sebanyak 99 individu (15 pohon, 28 tiang, 48 pancang dan 8 semai), zona B sebanyak 49 individu (5 pohon, 2 tiang, 36 pancang dan 6 semai), dan zona C sebanyak 16 individu (4 pohon, 5 tiang, 6 pancang dan 1 semai). Individu permudaan memiliki potensi yang tinggi dibandingkan individu dewasa menurut pengukuran Diameter at Breast Height (DBH). Hal ini menunjukan bahwa D. litoralis berpotensi baik untuk dilakukan upaya konservasi kawasan spesies tersebut, meskipun berdasarkan habitus menunjukan daya regenerasi yang cenderung rendah sehingga struktur populasinya menjadi tidak stabil. Wilayah yang sesuai untuk pengembangan upaya konservasi kawasan spesies D. littoralis di Pulau Nusakambangan Barat khususnya di luar Cagar Alam yaitu Zona A. ================================================================================================ Dipterocarpus littoralis (local name: pelahlar) currently is still endemic species in Nusakambangan island. This endemic species faces threats from invasive species and human activities on Nusakambangan Island. According to IUCN (2008) D. littoralis is located in critically endangered status, so his condition is threatened with extinction. Status of D. littorlis causes the need for priorities in conducting area management for the benefit of his conservation. Its conservation efforts need to be supported by an understanding of the ecological aspects and distribution of D. litoralis . So that, in this research observation was carried out to analyze population study of D. litoralis and built a spatial model type of D. littoralis in Nusakambangan, especially outside of region West Nusakambangan Reserve Natural. The population of the study used Transect Line Plots method with purposive sampling technique and spatial analysis D. littoralis using the Geographical Information System (GIS) with overlay technique. The observation was used on different plant habitus , namely seedlings, saplings, poles, and tree. The result of the research shows that Dipterocarpus littoralis INP value at seed habitus level < sapling < pole < tree. D. littoralis found as many as 164 individuals that distributed in 3 zone: Zone A 99 individuals (15 trees, 28 poles, 48 saplings and 8 seedlings), Zone B 49 individuals (5 trees, 2 poles, 36 saplings and 6 seedlings), and Zone C 16 individuals (4 trees, 5 poles, 6 saplings and 1 seedling). Young individuals have high potential regeneration compared to adult individuals according to measurements of Diameter at Breast Height (DBH). This shows that D. litoralis has good potential for conservation, although based on habitus, it shows that regenerative power tends to be low so that the population structure becomes unstable. Areas suitable for developing conservation efforts for the D. littoralis on Nusakambangan Barat Island especially outside the Nature Reserve, namely Zone A.

Item Type: Thesis (Masters)
Additional Information: RTBi 583.624 Yul k-1 2018
Uncontrolled Keywords: Dipterocarpus littoralis, jenis endemik, Nusakambangan, kajian populasi, analisis spasial
Subjects: Q Science > QH Biology
Q Science > QH Biology > QH541 Ecology
Q Science > QH Biology > QH75 Nature conservation. Landscape protection. Biodiversity conservation. Endangered species and ecosystems (General). Habitat conservation. Ecosystem management. Conservation biology
Q Science > QH Biology > QH91.8.S64 Species diversity
Divisions: Faculty of Natural Science > Biology > 46101-(S2) Master Thesis
Depositing User: Helmi Mukti Yulia
Date Deposited: 30 Jun 2021 04:08
Last Modified: 30 Jun 2021 04:08
URI: https://repository.its.ac.id/id/eprint/60715

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