Browsing by Author "Hamzah, Anthony"

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    Analisi Digital Landsat Etm + Untuk Mengindentifikasi Sistem Agroforestri Daerah Riau
    (2013-08-29) Nasrul, Besri; Hamzah, Anthony; Idwar
    The objectives were to identify land characteristics of agroforestry system that influencing its benefit value, and to compile criteria of site specific. Location were identified by the Landsat 7 ETM+ that designed in the land use utilization type: rubber agroforestry is identified by cyan old (RGB pixel 143,37; 173,04; 96,03) and palm oil agroforestry is identified by varying bright green-green (red-green-blue pixel 33-145; 142-253; 46-139). In each the land use utilization type done by measurement of land characteristics, cost the inputs, and price the benefits. The maximum likelihood classification system is used for classification; the benefit values were calculated by benefitcost ratio; the suitabilify criteria of site specific were compiled by cluster analysis. The economic suitability criteria of rubber are: I (4,18-3,94); II (3,94-3,15); IH (3,15-2.73); IV (2,73-2,31), the economic suitability criteria of palm oil are: I (3,30-2,72); II (2,72-2,07); ffl (2,07-1,38); FV (1,38-1,18), and would be base saturation, exchangeable Ca, and Mg. These criteria can be used to evaluate of suitability for tiie agroforestry system rubber and palm oil in Riau
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    Penilaian Perubahan Kondisi Lingkungan Pasca Pembangunan Perkebunan Kelapa Sawit Pada Lahan Gambut Di Provinsi Riau
    (2013-08-29) Idwar; Sunardi; Suwondo; Hamzah, Anthony; Syahril, Nedi; Nasrul, Besri; Gevisioner; Kasih Bangun, Rindu
    Evaluation of environment change pasca oil palm in the tropical peat lands need data about precisely and comprehensive understanding of lands and socioeconomics. The study was done in the Riau District were conducted infour months. Thefield survey was carried out on land unit. The lands were evaluated by maximum Iimiting factors and the socio-economic were calculated by Multi-Dimensional Scaling. Development of oil palm existing in the peatland not yet followed the soil conservation, so that giving influence to change oflands environment: (l) Saturation at all location > 4 mS, with full marks there was Bengkalis 107,32 mS; (2) Land subsidence > 6 cm year' espectally Rokan Hitir have l 8 cm year' ; and (3) Change of ground water exceeding valuefloatfor oil palm (60 cm), highest value there was Siak 30-95 cm. Level continue oil palm plantation in peat landsfor the ecologt dimension showed index value 47,35ok (less have continuation), with ecologtfactor having an effect: anangement water level, prevention of burning land, usage of amelioran/fertilizatton, and specific adjusment of site technologt. Level continue oil palm plantation in peat lands for social dimensio;n showed index value 55,65% (enough have continuation), with social factor having an effect: community emp-owerment, policy synchronization, solving of sosio-conflkt, and weak of law straightening. Level continue oil palm plantation in peat lands for economic dimension showed index value 68,62% (enough have continuation), with economic factor havingan effect: capital structure, price ofTBS, andproduction equipments.