No abstract

Indonesia is an archipelago country that has the longest coastline after Canada (UNCLOS). Banyuwangi District is a coastal area in Northern Java, which has a very dynamic development because of its location of the capital city that located along the coastal area. The purpose of this study is to assess the degree of coastal vulnerability in Banyuwangi District with the higher level of development. The CVI method (Coastal Vulnarability Index) of evisien sting is used to assess vulnerability. The coastal vulnerability is very low over 8 km, with a 15.4% of coastal length of Banyuwangi District. Low vulnerability occurs in areas that are located in areas close to settlements area, with beaches already experiencing human intervention. The low category is about 12 km long, reaching 23.3% of the existing coastal length in Banyuwangi District. The middle category is about 16 km, equivalent to 30.8% of shoreline. While the high category is about 10 km, equivalent to 19.2% of coastal length. The highest category has a length of 6 km, equivalent to 11.5% of the coastal area of Banyuwangi district.

Indonesia's population in 2021 will increase by 0.92% from 2020. The increasing population demands the fulfillment of food. Land changes and their consequences indicate land damage. The purpose of the study was to assess the soil damage potential index (SDPI) on the slopes of Mount Argopura through terrain analysis and the use of geographic information system technology. The research was carried out on the slopes of Mount Argopura in 2022. The tools used included a clinometer, a GPS, spectrophotometer, AAS, arc GIS 13 and minitab. The materials included administrative maps, soil maps, slope maps, RBI maps, land use maps, rainfall maps. This research is descriptive exploratory with field survey method. The activity is divided into 3 stages, namely pre-survey, field survey, and post-survey. Research parameters include texture, soil thickness, soil type, soil pH, CEC, base saturation, soil drainage, parent material, landform, relief, rainfall, and land use. Based on the results of the study, the SDPI with an area of 22,148.75 ha was in the heavy category 44.12% (9772.28 ha), the medium category was 53.11% (11762.84 ha), and the light category was 2.77% (613.63 ha). Keywords:  Geographic Information System, Land Degradation, Mount Argopura, Soil Damage

The use of agrochemicals is still an option in terms of providing fast nutrition and increasing plant growth more efficiently to a certain extent. However, its continuous use results in a decrease in soil quality and soil fertility, which in turn causes the accumulation of heavy metal ions in plant tissues, and affects nutritional yields and food safety. The community service activities were carried out by the SBF (Soil Biodiversity and Fertility) team of the Jember University Soil Science study program in Karangrejo Village, Gumukmas District, Jember Regency. Field visits were conducted on farmers' fields to review, evaluate and discuss qualitative characteristics of soil properties. This service activity aims to increase understanding of sustainable soil fertility management and training in making liquid organic fertilizer based on a local bacterial consortium. The results of the activity showed that farmers' knowledge of the parameters of soil properties, especially pH, nutrients, and soil organic matter, was still minimal. The level of acidity (pH) of the soil determines the factors of production through the ease with which nutrients are absorbed by plants as well as the possibility of the presence of toxic elements that can interfere with plant growth. Knowledge of soil pH is needed in relation to nutrient management and liming. A deeper understanding of several parameters of soil properties, especially soil pH values, needs to be emphasized and followed up through mentoring activities. Mentoring activities as follow-up activities for farmer groups are carried out with the target output of liquid organic fertilizer products. Entrepreneurship training for farmer groups members also needs to be carried out to build an entrepreneurial spirit and added value from livestock products by farmers so that the farmer's household economy can sustainable.

Mangrove atau di Indonesia biasa disebut bakau adalah nama sekelompok tumbuhan dari marga Rhizophora, suku Rhizophoraceae. Tumbuhan ini memiliki ciri-ciri yang mencolok, yaitu berupa akar tunjang yang besar dan berkayu, pucuk yang tertutup daun penumpu yang meruncing, serta buah yang berkecambah serta berakar ketika masih di pohon (vivipar). Hutan mangrove terdapat di sepanjang garis pantai di kawasan tropis, dan menjadi pendukung berbagai jasa ekosistem, termasuk produksi perikanan dan siklus unsur hara. Namun luas hutan mangrove telah mengalami penurunan sampai 30–50% dalam setengah abad terakhir ini. Termasuk kondisi ekosistem mangrove khususnya di Jawa Timur sebagian besar rusak, sebagai akibat kekurangan pemahaman, kurangnya kepedulian baik masyarakat maupun stakeholder yang terkait. Tujuan dan sasaran tersebut dicapai melalui kegiatan kunjungan ke stakeholder (dinas/instansi) terkait dengan pengembangan dan pengelolaan ekosistem mangrove di wilayah kabupaten yang memiliki kawasan pantai, untuk melakukan pendekatan dan serap informasi mengenai kondisi mangrove dan pengelolaannya, kemudian kita menjalin pendekatan melalui workshop dan praktik pembibitan serta kegiatan penanaman 1500 bibit mangrove di lahan seluas 3 Ha sebagai bagian dari program untuk menciptakan alternatif pendapatan dari sektor pengelolaan lingkungan. Kegiatan pengabdian terutama ditujukan untuk meningkatkan kesadaran dan kepedulian masyarakat di wilayah pesisir terhadap pengembangan dan pengelolaan ekosistem mangrove, dengan target khusus tersusunnya strategi pengembangan dan pengelolaan ekosistem mangrove serta terbentuknya Kelompok Kerja Petani Mangrove di wilayah Desa Agel, Kecamatan Jangkar Kabupaten Situbondo. Harapannya, kedepan masyarakat di wilayah pesisir semakin berdaya memiliki alternatif pendapatan yang sekaligus juga dalam rangka menjaga ekosistem alami di wilayah pesisir dan menjadikan kawasan pesisir khususnya kawasan hutan mangrove nantinya menjadi kawasan ekoeduwisata yang menarik bagi para pengunjung, lebih jauh lagi tujuan inti dari kegiatan pengabdian ini adalah pengembangan dan pengelolaan ekosistem mangrove secara berkelanjutan.