Study on floristic and plant species diversity in the Lebanon oak (Quercus libani) site, Chenareh, Marivan, Kordestan Province, western Iran

HASSAN POURBABAEI, SHIVA ZANDI NAVGRAN

Abstract. Pourbabaei H, Navgran SZ. 2011. Study on floristic and plant species diversity of the Lebanon oak site (Quercus libani) in Chenareh, Marivan, Kordestan Province, western Iran. Nusantara Bioscience 3: 15-22. In order to study floristic and plant species diversity, approximately 450 ha of oak forests were selected in Chenareh, Marivan of Kordestan province in western Iran. Inventory was selectively carried out in 50 m elevation range in the different aspects. Vegetation was surveyed in the four layers including: tree (dbh >5 cm), regeneration (dbh <5 cm), shrub and herb. Diversity and richness indices were used to analyze data in the different vegetation layers. Results indicated that 82 plant species found in the studied site, comprise of 9 tree, 3 shrub and 70 herbaceous. The mean diversities and richness measures were found to be the highest in southwestern and lowest in southeastern and northern aspects for the tree layer. Whereas for the regeneration layer, the mean diversity measures were found the highest in northeastern (i.e., 1-D and H′) and southern (i.e., N2 and N1) and lowest in southwestern (i.e., 1-D, H′ and N1) and southeastern (i.e., N2). The mean diversities were found the highest in northern (i.e. N2 and H′) and northwestern (i.e. 1-D and N1) and lowest in northeastern aspect in the shrub layer. The mean diversities were also found the highest in western and lowest in northeastern aspect in the herbaceous layer. Moreover, Mean richness and diversity were found the highest in 1500 m asl and lowest in 1750 and 1800 m asl in the tree and shrub layers. Mean richness and diversity were found the highest in 1500 m asl and lowest in 1750 m asl in the regeneration layer. Also, the mean diversities were found the highest in elevation 1700 m asl and lowest in elevation 1800 m asl in the herbaceous layer.
Key words: floristic, plant diversity, aspect, elevation, western Iran.

Abstrak. Studi keanekaragaman floristic dan jenis tumbuhan pada situs Lebanon ek (Quercus libani) di Chenareh, Marivan, Provinsi Kordestan, Iran barat. Nusantara Bioscience 3: 15-22. Dalam rangka meneliti floristik dan jenis tumbuhan, sekitar 450 ha hutan kayu ek dipilih di Chenareh, Marivan, Provinsi Kordestan di Iran barat. Inventarisasi dilakukan dilakukan secara selektif pada kisaran elevasi 50 m dengan aspek yang berbeda-beda. Vegetasi disurvei dalam empat lapisan termasuk: pohon (dbh> 5 cm), regenerasi (dbh <5 cm), semak dan herbal. Indeks keanekaragaman dan kekayaan digunakan untuk menganalisis data dalam lapisan vegetasi yang berbeda. Hasil penelitian menunjukkan bahwa 82 jenis tumbuhan ditemukan di lokasi penelitian, terdiri dari 9 pohon, 3 semak dan 70 herba. Pada pengukuran lapisan pohon mean keanekaragaman dan kekayaan ditemukan bahwa yang tertinggi di barat daya dan yang terendah di tenggara dan utara. Pada pengukuran lapisan regenerasi mean keanekaragaman ditemukan yang tertinggi di timur laut (yaitu, 1-D dan H ‘) dan selatan (yaitu, N2 dan N1) dan yang terendah di barat daya (yaitu, 1-D, H’ dan N1) dan tenggara (yaitu, N2). Pada lapisan semak keanekaragaman ditemukan mean tertinggi di utara (N2 yaitu dan H ‘) dan barat laut (yaitu 1-D dan N1) dan terendah di timur laut. Pada keanekaragaman lapisan herba ditemukan mean tertinggi di barat dan terendah di timur laut. Selain itu, mean kekayaan dan keanekaragaman lapisan pohon dan semak ditemukan tertinggi pada ketinggian 1500 m dpl dan terendah pada 1750 dan 1800 m dpl. Mean kekayaan dan keragaman lapisan regenerasi ditemukan tertinggi pada ketinggian 1500 m dpl dan terendah pada 1750 m dpl. Juga, ditemukan mean keragaman lapisan herba tertinggi ditemukan pada ketinggian 1700 m dpl dan terendah pada 1800 m dpl.
Kata kunci: flora, keanekaragaman tanaman, aspek, ketinggian, Iran barat.

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