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Hutan mangrove sedang menghadapi masalah seperti deforestasi, sehingga perlu pemantauan dan pemetaan hutan mangrove khususnya di Pulau Bali. Penyebab utama hilangnya hutan mangrove adalah kegiatan antropogenik, termasuk akuakultur, pertanian, dan pembangunan perkotaan. Di wilayah yang luas seperti pulau Bali, penyediaan data sebaran mangrove dan pemantauan perubahan kondisi vegetasi memerlukan waktu proses yang lama bila dilakukan dengan interpretasi citra secara konvensional. Penelitian ini bertujuan untuk mengidentifikasi luasan sebaran dan kerapatan hutan mangrove untuk memberikan informasi terbaru kepada pemerintah. Metode yang digunakan adalah CART Supervised Classsification di Google Earth Engine (GEE) dan Normalized Difference Vegetation Index (NDVI) di ArcMap. Platform Google Earth Engine (GEE) memiliki koneksi big data yang dapat mengolah data berbasis cloud dengan berbagai algoritma machine learning. Kajian ini berfokus pada tiga zona utama yaitu zona A meliputi Kabupaten Buleleng dan Jembrana, Zona B yang meliputi Kota Denpasar dan Kabupaten Badung, dan Zona C yang masuk dalam Kabupaten Klungkung. Hasil pemetaan sebaran hutan mangrove memiliki nilai overall accuracy sebesar 95.7% sedangkan kappa accuracy sebesar 91.2%. Total luas hutan mangrove pada tahun 2021 di Pulau Bali adalah 2,488.7 Ha. Kerapatan hutan mangrove terlebat terletak di kawasan Tahura Ngurah Rai (Zona B) yaitu Kota Denpasar dan Kabupaten Badung masing-masing 335.9 Ha dan 261.1 Ha. Kota Denpasar dan Kabupaten Badung juga merupakan dua kawasan mangrove terluas di Pulau Bali dengan luas masing-masing adalah 590.5 Ha dan 662.5 Ha.

An earthquake followed by a tsunami occurred on September 28, 2018, in Central Sulawesi. National Disaster Management Agency recorded that 2,113 people died from the earthquake and tsunami, spread over 1,703 people in Palu City, 171 people in Donggala Regency, 223 people in Sigi Regency, 15 people in Parigi Moutong Regency, and Pairskayu Regency with a total of 15 people. 1 person. According to satellite imagery data obtained [2], damage to buildings that occurred in Palu City reached 2,403 buildings and caused the paralysis of Palu City from various aspects, around 70,000 people were accommodated in temporary shelters. Structural mitigation efforts to reduce the impact of damage from natural disasters can be done naturally or artificially. One of the natural structural mitigation efforts in the coastal area of ??Palu City is the creation of a coastal green belt or generally called a Greenbelt. Planting coastal vegetation and mangroves and maintaining existing coastal forest ecosystems is a disaster mitigation effort. Coastal forest ecosystems and mangroves have strong and sturdy root systems that can grip the deepest soil layers. The canopy is flat and dense, and dense at all times, making coastal forests and mangroves an ideal natural protection against the threat of disasters in coastal areas. The purpose of this research is to plan the formation of coastal forests (Planning Vegetative Structure for Coastal Protection) in Palu City Bay. The method used in this research is a descriptive method, namely by field observation, which is carried out to determine the existing condition of vegetation in the coastal area of ??Palu Bay. Based on the results of the analysis, at 23 measurement points, it was found that the thickness of the fine sediment at the bottom of the water ranged from 1-10 cm, while the results of the analysis of the thickness of the coarse sediment ranged from 1-26 cm. The sediment population in Palu City has the characteristics of Gravel (gravel) and Sand (sand). The potential content of TSS in the water column reaches 188 mg/L.

Minyak goreng merupakan salah satu bahan pokok yang harus tersedia dalam kebutuhan hidup masyarakat Indonesia. Pertumbuhan penduduk, perkembangan industri, rumah makan dan restoran cepat saji menyebabkan penggunaan minyak goreng semakin meningkat. Peningkatan penggunaan minyak goreng tersebut akan menyebabkan peningkatan limbah hasil penggorengan. Limbah minyak bekas atau minyak jelantah yang tidak dikelola dengan baik akan menyebabkan pencemaran di lingkungan. Kurangnya kesadaran masyarakat akan bahaya limbah minyak jelantah terhadap lingkungan sehingga perlu adanya pembinaan kepada masyarakat terkait bahaya pembuangan limbah minyak jelatah ke lingkungan dan memberikan solusi pemanfaatan minyak jelantah menjadi produk baru yang mempunyai nilai ekonomis. Oleh karena itu, sebagai bentuk pengabdian kepada masyarakat dari Institut Sains dan Teknologi Nahdlatul Ulama Bali (ISTNUBA), kami mencoba mengajak masyarakat di Desa Banjar Anyar, Kediri, Kabupaten Tabanan Bali untuk dapat berpartisipasi dalam pelatihan pengolahan minyak jelantah menjadi sabun cuci batangan dan lilin aromaterapi. Metode yang digunakan adalah penyuluhan dan pembagian brosur informasi mengenai bahaya dan manfaat minyak jelantah. Kegiatan pelatihan ini diharapkan dapat menambah pengetahuan dan kesadaran masyarakat dalam mengelola minyak jelantah serta dapat membuka peluan wirausaha, menciptakan lapangan kerja dan meningkatkan taraf hidup masyarakat sekitar.

The rich forests of Indonesian New Guinea are understudied and threatened. We used satellite data to examine annual forest loss, road development and plantation expansion from 2001 to 2019, then developed a model to predict future deforestation. No previous studies have attempted such a detailed assessment of past and future deforestation. In 2019, 34.29 million hectares (Mha), or 83% of Indonesian New Guinea, supported old-growth forest. Over nineteen years, 2% (0.75 Mha) were cleared: 45% (0.34 Mha) converted to industrial plantations, roads, mine tailings, or other uses near cities; 55% (0.41 Mha) cleared by transient processes including selective natural timber extraction, inland water bodies-related processes, fires, and shifting agriculture. Industrial plantations expanded by 0.23 Mha, with the majority (0.21 Mha; 28% of forest loss) replacing forests and reaching 0.28 Mha in 2019 (97% oil palm; 3% pulpwood). The Trans-Papua Highway, a ~4000 km national investment project, increased by 1554 km. Positive correlations between highway and plantations expansion indicate these are linked processes. Plantations and roads expanded rapidly after 2011, peaked in 2015/16, and declined thereafter. Indonesian government allocated 2.62 Mha of land for the development of industrial plantations (90% oil palm 10% pulpwood) of which 74% (1.95 Mha) remained forest in 2019. A spatial model predicts that an additional 4.5 Mha of forest could be cleared by 2036 if Indonesian New Guinea follows similar relationships to Indonesian Borneo. We highlight the opportunities for policy reform and the importance of working with indigenous communities, local leaders, and provincial government to protect the biological and cultural richness still embodied in this remarkable region.