PENGARUH BONITA, UMUR, KERAPATAN BIDANG DASAR, DAN KETINGGIAN TEMPAT TERHADAP PRODUKSI GETAH Pinus merkusii Jungh. et de Vriese PER SATUAN LUAS DI RPH TEMANGGAL BKPH MAGELANG KPH KEDU UTARA

DONI PRABOWO, Dr. lr. Setyono Sastrosurnarto

2003 | Skripsi | S1 KEHUTANAN

Pinus merkusii Jungh. et de Vriese merupakan jenis tanaman yang mampu bertahan hidup dan dapat tumbuh pada tempat tumbuh yang sulit. Hasil ganda seperti dan getah dapat diberikan oleh tanaman tusam, sehingga menjadikan pilihan tepat dalam Hutan Tanaman Industri (HTI). Hasil el to predict the production of resin. The purpose of the research is to find equation model elaborating the relationship between yield and determinant variables. It is expected area the yield of resin per hectare on various site and conditions estimate by using the model. Data analysis was processed by using backward elimination procedure and extra sum squares principle. The analysis was processed in two ways i.e a model using relative basal area (kbd), relative density number of trees (dkn), and relative density of diameter squares ( dkd2) or relative density of basal area (kbd) as variables and resin yield per hectare as response variable.

Pinus merkusii Jungh. et de Vriese is a spesies of trees which is able to endure and grow on severe site. Multiple products, at least timber and resin produce by pine tree, resulting as a good choice for Plantation Forest (HTI). For resin yield it is necessary of having an equation model to predict the production of resin. The purpose of the research is to find an equation model elaborating the relationship between yield and determinant variables. It is expected that the yield of resin per hectare on various site and conditions can be estimated by using the model. Data analysis was processed by using backward elimination procedure and extra sum squares principle. The analysis was processed in two ways i.e a model using relative basal area as enpressed by dkn*dkd2, relativ???? density number of trees ( dkn ), and relative density of diameter squares ( dkd2) or relative density of basal area (kbd) as variables and resin yield per hectare as response variable.

Kata Kunci : production of resin, equation model, large of influence