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Abstrak :
Telah dilakukan penelitian tentang struktur dan komposisi vegetasi lanskap pekarangan dan pemanfaatan tanaman pekarangan di Kecamatan Pariangan, Kabupaten Tanah Datar, Sumatra Barat pada bulan Oktober-Desember 2018. Penelitian bertujuan untuk mengkaji struktur dan komposisi vegetasi lanskap pekarangan dan pengetahuan lokal dalam memanfaatkan tanaman pekarangan. Tipe pekarangan yang dijadikan objek penelitian ditentukan secara stratified random sampling berdasarkan lokasi yang berbeda-beda yaitu pekarangan yang berlokasi di dekat hutan, dekat jalan raya dan dekat sungai. Setiap tipe pekarangan dikelompokkan ke dalam dua kelas luasan yaitu kecil dan besar. Masing-masing kelas luasan dicuplik sebanyak 15 pekarangan. Data struktur dan komposisi vegetasi lanskap pekarangan dikumpulkan dengan mencatat nama lokal tanaman, menghitung jumlah individu tanaman dan mengukur diameter batang tanaman sedangkan data pemanfaatan tanaman pekarangan dengan pendekatan etnobotani melalui wawancara semi terstruktur, terbuka dan FGD (Focus Group Discussion). Wawancara dilakukan pada pemilik pekarangan atau anggota keluarga pemilik pekarangan. Data yang diperoleh dianalisis secara kualitatif dengan statistika deskriptif untuk menggambarkan pengetahuan lokal masyarakat. Analisis secara kuantitatif dilakukan dengan menghitung indeks nilai penting, indeks keanekaragaman menurut Shannon-Wiener (H), indeks kesamaan Jaccard (Ji), indeks nilai kepentingan lokal (Local Users Value Index, LUVI) dan indeks kepentingan budaya (Index of Cultural Significance, ICS). Hasil pencuplikan sebanyak 90 pekarangan teridentifikasi sebanyak 300 spesies terdiri atas 236 genus dan 85 famili. Indeks keanekaragaman di tiap pekarangan tergolong tinggi yaitu 3,97-4,6. Indeks kesamaan tertinggi terdapat di pekarangan dekat sungai ukuran besar dengan pekarangan dekat sungai ukuran kecil. Indeks nilai penting tiap perawakan tanaman di setiap kategori pekarangan memiliki spesies yang berbeda-beda. Stratifikasi tanaman pekarangan lebih menyerupai stratifikasi hutan dengan lapisan tajuk yang rapat. Nilai LUVI di tiga tipe pekarangan menunjukkan adanya perbedaan persepsi mengenai spesies yang disukai pada beberapa kategori pemanfaatan. Nilai ICS tertinggi dimiliki oleh karambia (Cocos nucifera L.) sebesar 68.

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Research about the structure and composition of vegetation of homegardens landscape and utilization of plants in the homegardens of Pariangan Subdistrict, Tanah Datar district, West Sumatra was conducted on October-December 2018. The purposes of this research were to investigate the structure and composition of vegetation homegardens landscape and the local knowledge in utilizing homegardens plants. The type of homegardens used as the object of research is determined by stratified random sampling based on different locations, namely the homegardens near the forest, near the highway and near the river. Furthermore, each type of homegardens is grouped into two broad classes, namely small and large. Each broad class is sampled as many as 15 homegardens. Data of the structure and composition of vegetation homegardens landscape were collected by recording as local names, calculating individual numbers and measuring in stem diameter while data of utilizing homegardens plants were collected using ethnobotanical approach through semi structured interview, open ended and FGD (Focus Group Discussion). Interview were conducted with the homegardens owner or the family members of the homegardens owner. Data were analyzed qualitatively using descriptive statistics to describe the local knowledge. Quantitative analysis was conducted by calculate the important value index, the diversity index according to the Shannon-Wiener index (HE), the similarity index according to the Jaccard index (Ji), Local Users Value Index (LUVI) and Index of Cultutral Significance (ICS). Sampling results as many as 90 homegardens identified 300 species consisting of 236 genera and 85 families. The diversity index in each homegardens is classified as high, namely 3.97-4.6. The highest similarity index was in the homegardens near the river with a large size with a homegardens near the river with a small size. The important value index for each plant stature in each homegardens category have different species. Stratification of homegardens plants is more like stratification of forests with a dense canopy layer. LUVI in three type of homegardens show the different perception of the preferred species in several utilization categories. The highest ICS has karambia (Cocos nucifera L.) (68).

Abstrak :
Wawonii is one of the small islands located at S.E. Celebes.Plant diversity and its utilization by the local people have not been recorded yet....

Abstrak :
Hazardous waste will be an environmental problem if not managed properly. Co processing in cement industry which use hazardous waste as alternative material and fuel, is expected to be a solution of hazardous waste management. This research was conducted at cement factory. Sustainability factor in co processing activities needs to be studied. Co processing activities need to be analyzed by economic benefits, social acceptability, and environmental requirements to fulfill sustainability. Economic benefit analysis was conducted by efficiency approach for cement factory, cost efficiency of hazardouse waste management, and labor required. Analysis of social acceptance was conducted by analysis of perception of stakeholders. The fulfillment of environmental requirements was conducted by comparing environmental quality standards and liabilities in licenses issued by the government. The result of this study is co processing activities meet the rules of sustainability. PT. ITP has conducted hazardous waste management for 41 hazardous waste generators, 22 types of hazardous waste, and 7,861.23 tons of hazardous waste in July 2015 June 2016. PT. HI has conducted hazardous waste management for 71 hazardous waste generators, 53 types of hazardous waste, and 59,494.91 tons of hazardous wastev in July 2015 June 2016. The average efficiency per year obtained from 1 the use of alternative raw materials of 1.5 for PT.ITP and 1.42 for PT. HI 2 alternative fuel usage of 2.22 and for PT.ITP and 11.03 for PT.HI. Hazardous waste management is cheaper if managed through co processing. For the community, co processing activities provide jobs opportunity. The stakeholders accept co processing activities with average of 76 and has a frequency of distribution 39 for perception strongly agreed. Co processing has fulfilled environmental requirements consisting of compliance with air quality standards, dioxin, furans, compatibility of hazardous waste type, and product SNI compliance.

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Limbah bahan berbahaya dan beracun B3 akan menjadi permasalahan lingkungan apabila tidak dikelola dengan tepat. Kegiatan co-processing di pabrik semen dengan memanfaatkan limbah B3 sebagai bahan baku dan bahan bakar alternatif dianggap dapat menjadi solusi dalam pengelolaan limbah B3. Penelitian dilakukan di pabrik semen yaitu PT. ITP dan PT. HI yang telah melakukan kegiatan co-processing, namun kegiatan ini perlu dikaji keberlanjutannya. Untuk memenuhi kegiatan co-processing yang berkelanjutan, perlu dilakukan kajian manfaat ekonomi, analisis keberterimaan sosial, dan kajian pemenuhan persyaratan lingkungan. Kajian manfaat ekonomi dilakukan dengan pendekatan efisiensi bagi pabrik semen, efisiensi biaya pengelolaan limbah B3, dan tenaga kerja yang dibutuhkan. Analisis keberterimaan sosial dilakukan melalui analisis persepsi pihak yang berkepentingan dengan menggunakan metode analisis skala Linkert. Pemenuhan persyaratan lingkungan dikaji dengan cara membandingkan baku mutu lingkungan, kesesuaian limbah B3 yang dimanfaatkan, dan pemenuhan standar produk. Hasil riset ini adalah kegiatan co-processing memenuhi kaidah keberlanjutan berdasarkan manfaat ekonomi, keberterimaan sosial, dan pemenuhan persyaratan lingkungan. Pabrik semen PT. ITP telah melakukan pengelolaan limbah B3 terhadap 41 perusahaan penghasil limbah B3, sebanyak 22 jenis limbah B3, dan 7.861,23 ton limbah B3 selama periode Juli 2015-Juni 2016. Adapun PT. HI telah melakukan pengelolaan limbah B3 terhadap 71 perusahaan penghasil limbah B3, sebanyak 53 jenis limbah B3, dan berjumlah 59.494,91 ton limbah B3 selama periode Juli 2015-Juni 2016. Efisiensi rata-rata per tahun yang diperoleh dari 1 penggunaan bahan baku alternatif sebesar 1,5 bagi PT.ITP dan 1,42 bagi PT. HI 2 penggunaan bahan bakar alternatif sebesar 2,22 dan bagi PT.ITP dan 11,03 bagi PT.HI. Penghasil limbah B3 mengeluarkan biaya pengelolaan yang lebih murah apabila dikelola melalui co-processing. Bagi masyarakat kegiatan co-processing memberikan lapangan pekerjaan. Pihak yang berkepentingan menerima keberadaan kegiatan co-processing dengan nilai rata-rata 76 dan memiliki frekuensi distribusi 39 untuk persepsi sangat setuju. Kegiatan co-processing telah memenuhi persyaratan baku mutu emisi udara, dioksin, furan, kesesuaian jenis limbah B3, dan pemenuhan syarat SNI produk.