Evaluation of land suitability to increase the productivity of degraded lands in the Unda watershed aims: providing a database of land suitability for land use planning in support of sustainable agricultural development, providing spatial information, and recommendations in accordance with the land use plan of inhibiting factors that exist. Identification of characteristic land quality evaluation survey carried out by the method of land with exploration area of research followed by soil sampling at some sample of land units. Land suitability classification using the criteria of the Technical Guidelines for Evaluation of Land For Agricultural Commodities of Soil Research Institute (2003) is by matching between the haracteristics of the land with the requirements of growing plants was evaluated. Types of agricultural crops that are evaluated include plantation crops and food crops hotikultura fruits. Suitability actual land (land suitability based on survey data) are mostly classified as unsuitable (N), and marginally suitable (S3). Qualities/characteristics as the land that is the main limiting factor, among others: quality of land erosion, slope, water availability, temperature, rooting media (soil texture and coarse material). Sustainable land use planning can be recommended with agroforestry, accompanied by vegetative conservation measures because it is cheaper and easier to be carried out by farmers. Recommended cultivation effort is a combination of timber plants with horticultural crops of fruits with the provisions of at least 40% must be enclosed timber. Plant timber that can be developed between the other plants that are not too heavy canopy.

Pemanfaatan teknologi penginderaan jauh dalam bidang pemetaan telah lama dikenal. Data penginderaan jauh menjadi salah satu sumber data untuk pemetaan, yang memberikan informasi rupa bumi, seperti Kawasan pemukiman, Kawasan hutan, Kawasan pertanian dan lain sebagainya. Salah satu jenis data penginderaan jauh adalah citra Synthetic Aperture Radar (SAR), SAR memancarkan gelombang elektromagnetik untuk mendapatkan informasi dari target/rupa bumi. Citra SAR memiliki kelebihan tidak terpengaruh awan, cuaca (hujan dengan intensitas ringan), dan dapat bekerja sepanjang hari serta malam, dibandingkan dengan citra optik. Citra SAR dengan metode komposit RGB dual polarimetric multiple menggunakan aplikasi SNAP Toolbox dari European Space Agency (ESA) dapat dimanfaatkan untuk membedakan lokasi persawahan dengan bukan sawah, perbedaan backscatter atau nilai reflektan digunakan untuk mengetahuinya. Penelitian lebih lanjut menggunakan metode klasifikasi non parametrik Random Forest, dengan membuat kelas menjadi 2, yaitu sawah dan non sawah, ke-2 kelas digunakan sebagai training data untuk metode tersebut. Data yang digunakan adalah citra satelit Sentinel-1 pada tanggal 30 Maret 2020 dengan mode IW Level-1 GRD Ascending direction beresolusi 20x22 m dan polarisasi ganda (VH dan VV) di Kecamatan Kediri, Kabupaten Tabanan, Provinsi Bali. Dari hasil penelitian diperoleh akurasi 96,90%.

The impact of Covid-19 has dramatically affected all sectors, especially since the implementation of the large-scale social restriction system (PSBB). All businesses have been completely paralyzed, especially the tourism sector. Since the closure of the Guci Tourism Object on March 16, 2020, all homestay has been closed for quite a long time. On September 1, 2021, the Guci Tourism Object was reopened with limited conditions and accommodated thousands of visitors. Visitors are prioritized by people from Tegal Regency and are in good health. This reopening has a good impact on accommodation in Guci. For this effect, all homestays must be ready with government policies to implement cleanliness, health, security, and sustainability in the homestay environment. The purpose of this study was to determine the readiness to reopen homestay during the pandemic. The method used in this research is quantitative with descriptive analysis. The results of this research are the owners/managers of the homestays are pretty ready to reopen during the pandemic. However, there are still two things that must be considered or reviewed further. Those are Hand Washing/hand sanitizer facilities and body temperature measurement at the guest entrance.

The Unda Watershed is categorized as the priority watershed, which part of its area is degraded land. The condition of land cover with the dominance of low-density vegetation has implications for low infiltration and water absorption capacity, so that it has the potential to increase surface runoff. This study aims to identify the potential for water absorption as the basis for watershed management planning. The method used in this study is scoring with four parameters, namely soil type, land use, slope, and rainfall. Spatial data analysis uses Geographic Information System (GIS). The formulation of recommendations for watershed management activities is carried out descriptively, based on the findings of the analysis of water absorption potential. The results showed that the water recharge conditions in the study area were classified as good (22.54%), very critical (18.20%), normal (17.92%), and less critical (7.99%). The recommended watershed management is periodic reforestation, construction of bench/traditional terraces, construction of infiltration wells/biopori holes in the residential areas, and synergistic integration of the roles of watershed institutions from upstream to downstream.

Erosion prediction on Janga flow river area at Karangasem district used USLE ( Universal Soil Loss Equation ). This research conducted to know the large erosion on Janga flow river area and conservation treatment on unit larger erosion area of permitted erosion to concern on the class of ability area. Based on slope map compilation, used area map and soil variety map on research area was founded  L6  unit area. The large erosion predicts on Janga flow river area between 0,829 to 1.109,208 ton/ha/th. Low erosion in area unit 1,3,5,6,7, and 9 located on downstream of the flow river area. Be on the process of erosion on area unit 11 and 13 located on mid-flow river area. High erosion in area unit 14 and 16 located on upper reaches flow river area. Lowest erosion found in area unit 1,3,5,6,7,9,11 and larger erosion of permitted erosion located in area unit 10,13,14,15,and 16 need to soil conservation treatment. Applicable Soil conservation treatment is increasing the density of crops and improve terrace construction and by added used organic substance and cultivation crop