The beach is an important local role in supporting human life. Most of the population lives on the coast, so the beach is an unstable region. Beach instability caused by the phenomenon is influenced by sea and land. Beach lately many have problems like abarasi, sedimentation and salt water intrusion. Formulated into research questions are: 1) How is the distribution of disaster-prone areas in coastal erosion and sedimentation Takalar, 2) How mitigation erosion and sedimentation in Takalar Beach. The results showed that most of the beach Takalar experience abrasion. efforts that have been taken by the government and communities to mitigate erosion of building embankments / walls, gabion, and groin. Directed to the beach bergisik are goats and hibiscus plant footprint, beach structural walls or embankments is.

ABSTRAKJenis penelitian ini kuantitatif deskriptif, dianalisis secara spasiotemporal yang bertujuan untuk: mengetahui densitas/ kerapatan sambaran petir Cloud to Ground (CG), serta daerah dan waktu yang memiliki sambaran petir CG sangat tinggi berdasarkan aspek terestrial (elevasi dan penggunaan lahan) dan hurah hujan di Kabupaten Gowa Tahun 2017-2019. Tahap analisis data menggunakan software ArcGIS 10.4.1, dan Microsoft Excel 2013 untuk memaparkan hasil secara visual (peta, tabel dan grafik). Hasil penelitian diperoleh Tahun 2017 dan 2018 kerapatan sambaran petir sangat tinggi terjadi di Kecamatan Tombolopao. Sedangkan pada Tahun 2019 Sumba Opu dan Tombolo Pao memiliki tingkat kerapatan sambaran petir sangat tinggi. Berdasarkan aspek terestrial serta curah hujan di Tahun 2017 dan 2018 kerapatan sambaran petir sangat tinggi terjadi pada elevasi 1000-1500 mdpl dan jenis penggunaan lahan pertanian, puncak curah hujan dan kejadian sambaran petir tidak menunjukkan periode bulan yang sama, Tahun 2017 kejadian sambaran petir terbanyak yakni Nopember sedangkan puncak curah hujan terjadi Januari, Tahun 2018 kejadian sambaran petir terbanyak yaitu Maret, sedangkan puncak curah hujan terjadi Desember. Kemudian Tahun 2019 kerapatan sambaran petir sangat tinggi terjadi pada elevasi 0-300 dan 1000-1500 mdpl serta jenis penggunaan lahan pemukiman, puncak curah hujan dan kejadian sambaran petir menunjukkan periode bulan yang sama yakni pada Desember.

This study aims to determine the potential and efforts to utilize groundwater, the comparison of production result between irrigation and rainfed farmers and how the socio-economic life of farmers in Lise’ village, Pancalautang sub district, Sidenreng Rappang district. This research is quantitative descriptive. Data collection is done through observation, questionnaires and documentation. With data processing techniques with descriptive statistical analysis and inferential statistical analysis. The population in this study were 400 families, while the sample of this study was 80 families. Efforts to utilize ground water in Lise village for agricultural development have been carried out by the Ministry of PUPR through Groundwater Utilization (PAT) in the Central Pompengan-Jeneberang River Basin by drilling deep wells and shallow wells. The existence of groundwater irrigation in the village of Lise can help farmers to increase the yield of rice every year, where the comparison between the production of farmers in the irrigation group and rain fed groups with the difference in the difference is 0,8200 to 40,000. As for the socio-economic life of farmers in the village Lise 'can be said to be good. This is because most people choose to become farmers both cultivators and others. Farming experience for farmers affects land processing due to the amount of knowledge that has been applied. And affect the amount of production so that it can increase farmers' income.

This study is survey research that aims to evaluate the feasibility of ponds for the cultivation of Gracilaria sp. The number of sample points is 6 determined by using a purposive sampling method based on the location and source of water of the pond in Tellu Siattinge District, Bone Regency. Measurement of physical-chemical parameters each station I, II, III, IV, V, VI showed that temperature of 34, 32, 32, 31, 32, 31 ° C, depth of 40, 47, 45, 45, 50, 52 cm, brightness of 87, 85, 73, 78, 60, 63%, water pH 6.5, 7, 6.5, 6.5, 7, 7, dissolved oxygen (DO) 4.1, 2.6 , 7.8, 3.5, 2.1, 3.5 ppm, salinity of 14, 16, 20, 21, 25, 25 ppt, phosphorus content 0.017, 0.015, 0.018, 0.023, 0.014, 0.021 ppm, nitrate levels 0.011, 0.15, 0.29, 0.021, 0.011, 0.023 ppm, bottom of the pond are clay except station VI with clay loam, and all ponds locations sheltered from strong winds and strong waves. The result of the study showed that station II, III, IV, and VI are classes S1 (suitable), whereas at the station I and V are classes S2.

Currently, the number of damaged watersheds has not improved, as evidenced by the increasing incidence of natural disasters such as landslides, floods and droughts. Much work has been done to restore the watershed, but no significant results have been achieved. This type of research is quantitative descriptive using geographic information system (GIS) software analysis program, in the form of overlay analysis, factors that affect rock types, rainfall, slope, soil movement susceptibility, soil texture, and land use. Based on the estimation results of landslide susceptibility in the Tangnga watershed, three levels of landslide susceptibility were obtained, namely: non-prone with an area of 4,562 ha (55%) with distribution in Uluere, Bantaeng, Sinoa, Eremarasa, and Bissapu districts downstream of the Tangnga watershed. The level of vulnerability with an area of 3,246 Ha (39%) has a distribution in Uluere, Bantaeng, Bissapu, and Eremarasa Districts. And the level of vulnerability is very vulnerable with an area of 449 Ha (6%) having a distribution in the upstream Tagnga watershed, namely Uluere, Bantaeng, Eremarasa, and Sinoa Districts.