Judul: Strategy of Stingless Bee-Friendly Home Garden (Pekarangan) Management to Improve Urban Landscape Services
Abstrak: Lanskap perkotaan dicirikan dengan pertumbuhannya yang pesat sehingga menyebabkan ketidakseimbangan antara kebutuhan manusia dengan konservasi lanskap. Konsep “Pekarangan Ramah Lebah Tanpa Sengat” dapat menjadi alternatif konservasi lanskap dan meningkatkan jasa lanskap seiring dengan perkembangan perkotaan, salah satunya di Kota Depok. Untuk itu diperlukan strategi manajemen pekarangan yang mendukung peningkatan jasa lanskap di Kota Depok. Penelitian ini bertujuan menganalisis ketersediaan Ruang Terbuka Hijau (RTH) di Kota Depok, menganalisis karakteristik dan jasa lanskap di pekarangan, sampai dengan menyusun rekomendasi strategi manajemen pekarangan ramah lebah tanpa sengat dalam mendukung pengoptimalan jasa lanskap perkotaan di Kota Depok. Metode yang digunakan meliputi analisis spasial menggunakan Citra Landsat Kota Depok tahun 2021, survei lapang pada sampel pekarangan yang dipilih melalui metode purposive sampling, wawancara, kuesioner, dan studi literatur. Hasil dari penelitian menunjukkan, berdasarkan kondisi iklim, cuaca, ekologi, dan pekarangan, Kota Depok berpotensi dikembangkan sebagai pekarangan ramah lebah tanpa sengat. Meskipun pekarangan Kota Depok didominasi berukuran sempit, kondisi tersebut apabila dilakukan manajemen yang tepat dapat mendukung aktivitas dan menyediakan sumber pakan lebah tanpa sengat sepanjang tahun. Strategi manajemen dalam mengembangkan pekarangan ramah lebah tanpa sengat di Kota Depok, yaitu meningkatkan jumlah RTH dan koneksi diantaranya, melakukan sosialisasi yang dimulai dari Kelompok Wanita Tani (KWT), dan membuat model acuan pekarangan ramah lebah tanpa sengat yang ideal. Konsep ramah lebah tanpa sengat diwujudkan dengan tiga faktor utama, yaitu (1) ketersediaan tanaman sumber pakan; (2) ketersediaan tempat bersarang; serta (3) pengelolaan pekarangan yang tepat dan menciptakan habitat yang sehat bagi lebah tanpa sengat., Urban landscapes are characterized by rapid development, which causes an imbalance between human needs and landscape conservation. The concept of "Stingless Bee-Friendly Home Gardens", can be an alternative for landscape conservation in line with urban developments, such as in Depok City. For this reason, a strategy for home garden management is needed that supports the improvement of landscape services in Depok City. This study aims to analyze the availability of green open space in Depok City, analyze the characteristics and landscape services of the home garden, and formulate recommendations for strategies of stingless bee-friendly home garden management to support the optimization of urban landscape services in Depok City. The methods used include spatial analysis of Depok City in 2021 using Landsat imagery, field surveys on a sample of home garden selected through purposive sampling methods, interviews, questionnaires, and literature studies. The study's findings show that the climatic, weather, ecological, and home gardens conditions of Depok City have the potential to be developed as a stingless bee-friendly home garden. Although the home garden is dominated by a small size, this condition, if proper management is carried out can support activities and provide a source of stingless bee feed throughout the year. The management strategy for developing a stingless bee-friendly home garden in Depok City consists of increasing the number of green open spaces and connections between them, conducting socialization starting from the Women Farmers Community, and making a reference model for the ideal stingless bee-friendly home garden. The stingless bee-friendly home garden concept is realized by three main factors, namely (1) the availability of food source plants; (2) the availability
Keyword: Konsep ramah lebah tanpa sengat, Lanskap perkotaan, Manajemen pekarangan, Strategi, Peningkatan jasa lanskap

Judul: Landscape Services Management of Biodiversity and Carbon Stock City Park in Jakarta
Abstrak: Perkembangan wilayah perkotaan, terutama di DKI Jakarta, memberikan dampak positif dan negatif pada kualitas lanskap. Peningkatan polusi udara merupakan salah satu bentuk dampak negatif pada kualitas lanskap. Perkotaan seringkali menjadi sumber polusi udara tinggi, terutama dari pusat industri. Oleh karena itu, penting untuk memahami peran Ruang Terbuka Hijau (RTH), khususnya taman kota, dalam memperbaiki kualitas lanskap. RTH memiliki fungsi ekologi untuk mereduksi polusi udara, memberikan kontribusi pada keberlanjutan kota. Penelitian ini bertujuan untuk menganalisis jasa lanskap berupa biodiversitas dan karbon tersimpan menggunakan i-Tree Eco dan menyusun rekomendasi pengelolaan berdasarkan analisis SWOT. Analisis jasa lanskap biodiversitas diklasifikan dengan indeks Shannon-Wiener, sementara analisis cadangan karbon juga diklasifikasikan berdasarkan kriteria jumlah karbon tersimpan. Berdasarkan analisis Indeks Shannon-Wiener, Indeks keanekaragaman pada Taman Suropati dengan nilai 1,30 termasuk kategori keberagaman sedang, Taman Menteng dengan nilai 3,21 termasuk kategori keberagaman tinggi dan Taman Puring dengan nilai 1,34 termasuk kategori keberagaman sedang. Berdasarkan hasil analisis i-Tree Eco karbon tersimpan pada Taman Suropati sebesar 114,11 (ton/ha) termasuk kategori karbon tersimpan tinggi, pada Taman Menteng sebesar 41,7 (ton/ha) termasuk kategori karbon tersimpan rendah dan untuk karbon tersimpan pada Taman Suropati sebesar 56,4 (ton/ha) termasuk kategori karbon tersimpan sedang. Pada hasil analisis SWOT menunjukan bahwa skor IFE dan EFE berada pada posisi kuadran I (Grow and build strategy) strategi ini berfokus pada pengelolaan dan pengembangan lanskap. Berdasarkan hal tersebut, diperoleh strategi-strategi pengelolaan yang dapat diterapkan pada Taman Suropati, Taman Menteng dan Taman Puring diantaranya, meningkatkan biodiversitas dan karbon tersimpan dengan penanaman dan penyulaman, memberikan edukasi kepada masyarakat terkait kesadaran akan pentingnya menjaga kebersihan taman kota dan melakukan pengawasan terhadap pemeliharan rutin fasilitas dan vegetasi yang ada di Taman Kota., The development of urban areas, especially in DKI Jakarta, has both positive and negative impacts on landscape quality. One of the negative impacts is the increase in air pollution. Urban areas often become sources of high air pollution, particularly from industrial centers. Therefore, it is important to understand the role of Green Open Spaces, especially city parks, in improving landscape quality. Green Open Spaces has an ecological function to reduce air pollution and contributes to urban sustainability. This study aims to analyze landscape services in terms of biodiversity and stock carbon using i-Tree Eco and to develop management recommendations based on SWOT analysis. The analysis of biodiversity landscape services is classified using the Shannon-Wiener index, while the analysis of carbon stock is classified based on the amount of stocked carbon. According to the Shannon-Wiener Index analysis, the biodiversity index in Suropati Park with a value of 1,30 is categorized as medium diversity, Menteng Park with a value of 3,21 is categorized as high diversity, and Puring Park with a value of 1,34 is categorized as medium diversity. Based on the I-Tree Eco analysis, the carbon stock in Suropati Park is 114,11 (tons/ha), categorized as high stock carbon, in Menteng Park it is 41,7 (tons/ha), categorized as low stock carbon, and in Puring Park it is 56,4 (tons/ha), categorized as medium stock carbon. The SWOT analysis results show that the IFE and EFE scores are in quadrant I (Grow and build strategy), focusing on
Keyword: I-Tree Eco, jasa lanskap, manajemen lanskap, ruang terbuka hijau, taman kota

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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