ABSTRAK   Tujuan dari penelitian ini adalah mengidentifikasi dan memetakkan potensi sumberdaya lahan hijauan pakan ternak (HPT) di Kecamatan Tinanggea Kabupaten Konawe Selatan. Metode analisis data yang digunakan dalam penelitian ini adalah analisis deskripsi kualitatif dan analisis SIG. Lokasi penelitian ini adalah Kecamatan Tinanggea, yang memiliki sumberdaya lahan potensial untuk dikembangkannya hijauan pakan ternak (HPT). Metode pengumpulan data menggunakan metode survey melalui pengambilan sampel tanah pada setiap wilayah yang telah ditetapkan, selanjutnya melakukan pemetaan wilayah yang memiliki potensi untuk pengembangan hijauan pakan ternak (HPT). Hasil penelitian ini diperoleh berdasarkan evaluasi kesesuaian lahan yang dilakukan di Kecamatan Tinanggea Kabupaten Konawe Selatan dengan menggunakan metode pencocokan (matching) antara data karakteristik dan kualitas lahan dengan kriteria kesesuaian lahan (persyaratan tumbuh tanaman yang dievaluasi) dengan kategori sangat sesuai, yaitu lahan untuk tanaman rumput gajah seluas 31,85 hektar, lahan untuk tanaman leguminosa seluas 21,50 hektar, dan lahan untuk tanaman rumput lapangan seluas 184,26 hektar.Kata Kunci: hijauan pakan ternak, pemetaan, sumberdaya lahanABSTRACTThis study aimed to identify and map the potential of forage land resources in Sub-district Tinaggea, Konawe Selatan Regency.  Analysis method used in this research was qualitively descriptive analysis and Geographic Information System (SIG).  This research was conducted in Sub-district Tinanggea where the land resources are very potential to be improved as the pasture area.  Method of collecting data used survey method by collecting the soil samples in each determined areas, and then mapping the areas that have the potential for expanding the forage land. Result of the study was obtained based on evaluation of land suitability conducted in Sub-district Tinanggea, Konawe Selatan Regency by using matching method among characteristic data and land quality with the land suitability criteria (growth requirement of evaluated grass) in the very appropriate category including the land for elephant grass as large as 31.85 hectare, leguminosae as large as 21.50 hectare, and grass field as large as 184.26 hectare.Keywords: forage, land resources, mapping

Soil water balance is describes the condition of the water in an area. The difference of climatic conditions and land characteristic denotes the effect of the soil water balance. The objective of this study is to determine soil water balance on the type of soil that developed at parent material karts. Village Parigi district Muna has an area of 16245.88 ha consists of Inceptisol, Mollisol, and Andosol and developing in Qal and Qpw geological formation. The results of research showed that surplus on rainwater occurred in February, March, and April. While the water deficit occurred in January, May, June, July, August, September, October, November, and December. Soil water balance in the research site was affected by climate, soil condition, and soil characteristic. Soil was formed above the karst rock showing little effect on the soil water balance. ABSTRAK Neraca air lahan menggambarkan kondisi air pada suatu wilayah. Perbedaan kondisi iklim dan karateristik lahan memberikan pengaruh terhadap nerca air lahan. Tujuan penelitiaan ini yaitu untuk mengetahui neraca air lahan pada jenis tanah yang berkembang pada bahan induk karts. Kecamatan Parigi Kabupaten Muna memiliki luas 16.245,88 ha terdiri dari jenis tanah Iceptisol, Mollisol, dan Andisol dan  berkembang pada formasi geologi Qal dan Qpw. Hasil penelitiaan menunjukan bahwa surpulus air hujan terjadi pada bulan Februari, Maret dan April, sedangkan divisit air terjadi pada bulan Januari, Mei, Juni, Juli, Agustus, September, Oktober, November, dan Desember. Neraca air lahan dilokasi penelitian dipengaruhi oleh iklim, kondisi lahan, dan karateristik tanah. Tanah yang terbentuk diatas batuan karts memberikan pengaruh yang kecil terhadap neraca air lahan.

Abstract. Alam S, Ginting S, Hemon MT, Leomo S, Kilowasid LMH, Karim J, Nugroho Y, Matatula J, Wirabuana PYAP. 2022. Influence of land cover types on soil quality and carbon storage in Moramo Education Estate, Southeast Sulawesi, Indonesia. Biodiversitas 23: 4371-4376. This study investigated the influence of different land cover types on soil quality and carbon storage in Moramo Education Estate (MEE). Information is required as fundamental consideration to determine the best landscape management strategies for supporting soil conservation and climate change mitigation. Data were collected from three types of land cover generally found in this area, including forests, shrubs, and savannas. Three permanent sampling plots were randomly placed in every land cover as replicates with a size of 20 m × 20 m. Six parameters were used to describe the soil quality, i.e., soil acidity, soil organic carbon, total nitrogen, available phosphorus, exchangeable potassium, and cation exchange capacity. The above and belowground carbon storage from every plot was quantified. The soil quality and carbon storage among land cover types were compared using analysis of variance and Tukey’s honestly significant difference. Pearson’s correlation analysis was also applied to evaluate the relationship between soil quality and carbon storage. The results show that soil quality significantly differed in the exchangeable potassium and cation exchange capacity. A similar trend was also demonstrated in aboveground carbon storage. The highest average carbon storage was recorded in forests (150.50 ± 27.79 t ha?1), followed by shrubs (52.50 ± 15.02 t ha?1) and savannas (45.97 ± 4.42 t ha?1). The total carbon storage at different land covers was significantly correlated to soil acidity, available phosphorus, and cation exchange capacity. Carbon storage improved with the increased available phosphorus and cation exchange capacity. In contrast, carbon storage was negatively correlated with soil acidity. Overall, the land cover types significantly influenced soil quality and carbon storage in MEE.

Kendari City has multiple disasters hazard, especially floods and landslides. Consequently, the city requires systematic preventive efforts to minimize the potential disaster risk. This study aims to create a spatial model to determine the resilience of the land against floods and landslides with an ecosystem services approach. We used Sentinel-2 and DEMNAS (National Digital Elevation Model of Indonesia) as our primary data collection tools. Sentinel-2 was used to compile land use maps, and DEMNAS was the basis for compiling landform maps. The integration of the two was carried out by the analytic hierarchy process (AHP). The results showed that 8,259.98 acres (30.01 percent) of land in Kendari had low resilience to disasters. Those areas are located in a residential area on the TWH (Rocky hill over mixed sedimentary rocks) and KHY (Coalescent estuarine/riverine plain) landforms. The dominant disaster hazard in the area is inundation flooding that occurs almost every year in Kendari. Poor soil infiltration capacity is one factor affecting the area become vulnerable to flooding.

Abstrak: Fenomena Urban Heat Island dapat dipetakan dengan parameter Suhu Permukaan Tanah (SPT) dan indeks kerapatan vegetasi (NDVI). Penelitian ini bertujuan untuk menganalisis Urban Heat Island di Kota Kendari menggunakan Landsat 8 OLI/TIRS dan menganalisis kondisi eksisting sebaran fenomena Urban Heat Island di Kota Kendari. Proses dilakukan dengan mengolah data citra Landsat 8 OLI/TIRS perekaman 30 Agustus 2017. Analisis dilakukan dengan menggunakan algoritma Syariz untuk penentuan SPT yang kemudian dikorelasikan dengan nilai NDVI yang dihasilkan dari kaliberasi band 4 dan band 5 pada citra Landsat 8 OLI/TIRS. Hasil penelitian ini menunjukkan suhu permukaan tanah di kota Kendari berkisar antara 15,27 hingga 33,34. Dimana suhu 15 hingga 22adalah suhu daerah yang tidak terdeteksi atau tertutup awan. Persebaran suhu didominasi suhu antara 23-27 dengan luas 21.492,46 Ha atau 81,02% dari luas wilayah, dengan wilayah yang teridentifikasi sebagaui daerah UHI dengan suhu diantara 28-33 seluas 2.968,57 Ha atau 11,01% dari total luas wilayah Kota Kendari. Nilai korelasi antara SPT dan NDVI berada pada angka -0,66 yang berarti bahwa tingkat kerapatan vegetasi berbanding terbalik dengnan nilai suhu permukaan tanah atau semakin rendah indeks kerapatan vegetasinya, maka semakin tinggi suhu permukaan tanahnya.Kata kunci: Urban Heat Island, suhu permukaan tanah, Landsat 8, NDVIAbstract: The Urban Heat Island phenomenon can be mapped with the parameters of Land Surface Temperature (LST) and the Normalized Difference Vegetation Index (NDVI). This study aims to analyze Urban Heat Island in Kendari City using Landsat 8 OLI / TIRS and analyze the existing conditions of the distribution of the Urban Heat Island phenomenon in Kendari City. The process is done by processing Landsat 8 OLI / TIRS image recording data on August 30, 2017. The analysis carried out using the Syariz algorithm to determine LST which is then correlated with NDVI values resulting from band 4 and band 5 in Landsat 8 OLI / TIRS images. The results showed that the  land surface temperature in Kendari ranged from 15.27°C to 33.34°C. The 15 to 22°C is the temperature of the clouded or undetected area. The temperature distribution is dominated by temperatures between 23-27 ° C with an area of 21,492.46 Ha or  81.02% of the total area, with areas identified as UHI are the areas with temperatures between 28-33 ° C with an area of 2,968.57 Ha or 11.01% of the total area of  Kendari City. The correlation value between SPT and NDVI is at -0.66, which means that the vegetation density level is inversely proportional to the value of the land surface temperature value or the lower the vegetation index value, the higher the surface temperature of the land.Keywords: Urban Heat Island, land surface temperature, Landsat 8, NDVI