Judul: Analisis Pola Agroforestri Tradisional di Distrik Kokas Kabupaten Fakfak Propinsi Papua Barat
Abstrak: One method of cultivating the forest in Fakfak Regency is the practice of traditional agroforesty system known as garden system. The garden managemen It is based on the existing local knowledge and was produced to substance needs. It is necessary to study the management and the benefits from this agroforestry garden. This study was conducted in one month, on May 2012, and located in the province of West Papua, Fakfak Regency, Kokas District. Targeting farmers who have gardens (traditional agroforestri). Respondets interviewed were as many as 37 people in two villages, namely the villages of Kiriwas-was and Kinam. The respondents in each village were selected by a purposive sampling method. The data were collected from secondary data as well by interview and observation. The data were processed and analyzed with a method of reduction, presentation, and conclusion. The gardens owned by the respondents came from natural forests, which were then opened and made into gardens. Natural forests are opened and divided among the clans; and the respondents‟ gardens were in general inherited property (land). Garden cultivation is divided into several simple (traditional) activities such as land preparation, seed preparation, planting, maintenance, and harvesting. The results of the field study showed that the most common planting pattern (agroforestri) was the combination of wood, fruits and plantation crops. The crops selected were the types that do not require too much care, attention, and of local mainstay for example, nutmeg (Pala). These garden gave so many contribution to farmers income. It can be seen from the average contribution to the total income from the farmers garden, that is equal to 53,5%. The problem faced by the average farmers from the three tribes is the intrusion of animals such as wild boar, deer and other forest animals.
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Judul: Analysis of Food Supplying Pattern and Strategy of Social Forestry's Fanner Household in Lampung Barat
Abstrak: The government of Lampung Barat District need information about food supplying pattern and strategy of Social Forestry's farmer household. This inf~tion is essential for formulating forestry policy and program that support foo~ecurity of Social Forestry's fanner who utilize the forestry by planting coffel: The objectives of this research were to: 1) know the socio economic cha~teristics of Social Forestry's fanner household in Lampung Barat District, 2) a~lyze food supply level of Social Forestry's fanner household in Lampung BarafllDistrict, 3) know the source and cost of food supplying of Social Forestry's fann~ household in Lampung Barat District, 4) know food supplying strategy of Sociaf Forestry's farmer household in Lampung Barat District. The research was cond@ted in October-November 2008 by using cross sectional study design. The sam~ was 90 Social Forestry's fanner households. The data obtained by the reseaWh were household characteristics; food supplying pattern and strategy whidi analyzed descriptively and inferentially. More than half of the samples (78~1;are small households with all fanners and housewives are in productive age and illl elementary school. The income per capita per month of the sample is Rp 509.626, obtained from both Social Forestry and Non Social Forestry works. The food &xpenditure per capita per month is Rp 213.136, while non food expenditure per c~ita per month is Rp 197.851. The larger shares of food expenditure are utiliz&i in food supplying of cereals (31,7%), vegetables and fruits (20,3%), and animi food (18,5%). Energy supplying of the sample for cereals, vegetables and fruits?'oils and fats, sugar, and others are sufficient, while energy supplying for tubers, animal protein, legumes, and oily seed are not sufficient. The food supply is obtained by purchasing (70,8%), self production (28,2%), and other sources (0,4%). Strategies for raising income conducted by the sample are searching supplementary income other than the main working field; conducting husbandry; and planting crops in garden. Saving is a strategy rarely conducted by the sample.
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Judul: Sintesis layered double  hydroxide (LDH) dan aplikasinya sebagai adsorben kromium heksavalen (Cr(VI))
Abstrak: Layered double hydroxide (LDH) merupakan material hidrotalsit yang dapat berperan sebagai adsorben ion Cr(VI) melalui mekanisme tukar anion, adsorpsi-reduksi, dan interaksi elektrostatik. LDH MgAl dan MgAlFe disintesis menggunakan metode kopresipitasi dengan rasio molar M2+:M3+ sebesar 9:4,5. Hasil difraktogram XRD LDH MgAlFe menunjukkan terbentuknya fase hidrotalsit dengan puncak basal d003 mengalami pergeseran ke daerah 2θ yang lebih besar dibandingkan LDH MgAl, hal ini menandakan berkurangnya ukuran spesi basal dari LDH MgAlFe. Studi skala laboratorium dilakukan dalam mengkaji dosis dan profil isoterm adsorpsi dari LDH sebagai adsorben Cr(VI) yang dilakukan pada pH 4. Aplikasi LDH sebagai adsorben ion Cr(VI) menggunakan dosis optimum 12,5 mg/mL. Profil adsorpsi LDH MgAl mengikuti model isoterm Langmuir dan memiliki nilai kapasitas adsorpsi maksimum (Qm) sebesar 45,95 mg.g-1, sedangkan profil adsorpsi LDH MgAlFe mengikuti model isoterm Freundlich dan memiliki nilai kapasitas adsorpsi maksimum (Qm) sebesar 37,54 mg.g-1. Hasil adsorpsi menunjukkan bahwa LDH MgAl dan MgAlFe dapat berfungsi sebagai adsorben potensial dalam penanganan limbah ion Cr(VI)., Layered double hydroxide (LDH) is a hydrotalcite material that can serve as a Cr(VI) adsorbent through anion exchange, adsorption-reduction, and electrostatic interaction mechanisms. LDH of MgAl and MgAlFe materials were synthesized using the coprecipitation method with a M2+:M3+ molar ratio of 9:4,5. The results of the XRD diffractogram of LDH MgAlFe showed the formation of a hydrotalcite phase with a basal peak of d003 shifting to an area 2θ larger than that of LDH MgAl, which indicated a reduction in the basal spacing of LDH MgAlFe. A laboratory study was conducted to examine the dose and profile of the adsorption isotherm of LDH as Cr(VI) adsorbent at pH 4.The LDH can adsorb Cr(VI) at the optimum dose of 12.5 mg/mL. The LDH MgAl adsorption profile followed the Langmuir model has a maximum adsorption capacity (Qm) value of 45.95 mg.g-1. The MgAlFe LDH adsorption profile followed the Freundlich model has a maximum adsorption capacity (Qm) value of 37.54 mg.g-1. The adsorption results show that LDH MgAl and MgAlFe can function as promising adsorbents for treating Cr(VI) waste.
Keyword: isoterm adsorpsi, kromium heksavalen, layered double hydroxide, limbah ion logam