Abstract
Harapan rainforest situated in South Sumatera is a restoration area of PT REKI company that highly susceptible to land conversion. The problem faced in the effort of restoration is the restorated area that is too large and has not been tested any silvicultural techniques. The condition of land cover is the basic information that could be used as a reference in the preparation of restoration strategy. The study aimed to determine the level of damage, the condition of the ecosystem, appropriate silvicultural techniques, and plant species restoration priorities. The used methods were analysis of vegetation in 4 typologies (secondary forest, old shrub, young shurb, former akasia plantations), and the analysis of Normalized Difference Vegetation Index (NDVI). The results showed that the correlation between density value (y) and NDVI (x) was: y = -136.35+425.46x, R 2 (0.89). The order of area with the level of damage from the lowest to the highest were: the typology of secondary forest, old shurb, young shrub, and former akasia plantation, respectively. The typology of secondary forests had the highest value of diversity, richness, and evenness (H’>3, Dmg>5, and E>0.6). Relationship between former akasia plantations typology and another tipologies was not germane (euclidean distance> 3.31), and the relationship between seedling and trees in all typologies (with the exception of former akasia plantations) was very high (r> 0.9). Silvicultural techniques that could be done include eradicating A. mangium in the former akasia plantation and planting in the all typologies with the exception of secondary forest. The plants that could be used for restoration are Macaranga sp., K.malaccensis, Nephelium sp., P.gutta, H.mengarawan, S.leprosula.
Highlights
Luas hutan Indonesia yang tergolong besar yaitu mencapai 120 juta ha atau 51.3% dari luas daratan wilayah menyimpan sumber daya alam hayati yang berlimpah (KLHK, 2015)
Pancang Bellucia pentamera (21%) Baccaurea racemosa (10%) Antidesma montanum (10%) Croton argyratus (26%)
Komposisi jenis dan cadangan karbon di hutan tropis dataran rendah, Ulu Gadut, Sumatera Barat
Summary
Luas hutan Indonesia yang tergolong besar yaitu mencapai 120 juta ha atau 51.3% dari luas daratan wilayah menyimpan sumber daya alam hayati yang berlimpah (KLHK, 2015). Salah satu upaya yang dilakukan yaitu dengan melakukan restorasi ekosistem. PT REKI mendapat mandat secara sah untuk melakukan pengelolaan habitat, perlindungan dan upaya restorasi ekosistem hutan (Burung Indonesia et al, 2014). Selain itu tingkat kerusakan yang berbeda berpengaruh terhadap kondisi tegakan, seperti keanekaragaman hayati dan kekayaan jenis yang menjadi karakteristik ekologi suatu tegakan (Bishoff et al, 2005). Kondisi tutupan vegetasi merupakan salah satu informasi dasar yang sangat penting untuk diketahui, dan dapat dijadikan sebagai acuan dasar dalam penyusunan strategi restorasi. Oleh karena itu perlu dilakukan penelitian mengenai Analisis Tipologi Tutupan Vegetasi sebagai Dasar Penyusunan Strategi Restorasi di Area IUPHHK-RE PT REKI dengan tujuan mengetahui kondisi dinamika perubahan ekosistem (suksesi), tingkat kerusakan, hubungan kedekatan antar tingkat permudaan, teknik silvikultur dan jenis tanaman terpilih dalam rangka upaya restorasi di area IUPHHK-RE PT REKI wilayah Sumatera Selatan
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