Sebaran Indeks Pencemaran Air Di Hilir Sungai Tayu Kabupaten Pati

The Tayu River with a length of 23.58 km flows from the upstream on Mount Muria to the downstream in Tayu District. Along the river flow up to the lower reaches of the river, there are many agricultural land, settlements, shops, industries, fish auction sites, moorings, and fishing activities. The variety of human activities along the upstream to downstream of the Tayu River, causes a large number of pollutants to accumulate and settle in the lower reaches of the river. This causes the water downstream to experience a decrease in quality and an increase in pollution levels in the Tayu River. The objectives of this study, 1) Determine the Water Pollution Index in Downstream Tayu River, Pati Regency, 2) Analyze the distribution Water Pollution Index in Downstream Tayu River, Pati Regency. The methods used are the Pollution Index Method (IP) according to the Decree of the State Minister of the Environment No. 115 of 2003 and the Inverse Distance Weighted (IDW) Method. The results of water measurements and tests are known that the water quality in the lower reaches of the Tayu River is in poor condition with many water parameter values exceeding water quality standards. The calculation of pollution levels shows that Downstream Tayu River has IP values that are in the range of 1.0 < IPj ≤ 5.0 and 5.0 < IPj ≤ 10. The range of values indicates that the Lower Tayu River belongs to the category of mild polluted and moderately polluted conditions. The results of the water pollution index in the lower reaches of the Tayu River show that the closer to the river estuary, the higher the Pollution Index

Pendugaan Cadangan Karbon Di Atas Permukaan Pada Hutan Rakyat Dengan Memanfaatkan Data Synthetic Aperture Radar Sentinel-1 (Studi Kasus Di Kabupaten Sukoharjo)

The high amount of carbon dioxide in the atmosphere is one of the causes of global warming. Preserve carbon stocks is an effort to reduce carbon emissions, including in the community forest which need to be recorded. Remote Sensing Data of Sentinel-1 SAR (Synthetic Aperture Radar) was used to determine the above ground carbon stocks on community forest in Sukoharjo Regency. The objectives of this reasearh are: 1) analyze the relationship between the backscatter value of Sentinel-1 SAR dual polarization data and the value of carbon stock in community forest based on the above ground green biomass value; 2) to estimate above ground carbon stock of community forest in Sukoharjo Regency by utilizing the dual-polarization SAR Sentinel-1 data; and 3) to determine the total and the spatial distribution of above ground carbon stock on community forest in Sukoharjo Regency based on Sentinel-1 SAR data. The method was used in this study is a survey method using purposive sampling to complement remote sensing data related to biomass and above ground carbon stock in community forest using allometric equations based on the the extraction result of backscatter value of each polarization VV (Vertical-Vertical), VH (Vertical-Horizontal), and band ratio VV/VH. Statistical analysis was used to generate equation for estimating carbon stocks based on the SAR data and field data. Geographic Information System (GIS) was used to represent data spatially well as information of above ground carbon stock value and used spatial data analysis approach both quantitatively and qualitatively. The results showed that: 1) there is a significant and inversely relationship between the value of VV polarization backscatter (R = -0.438 (very low)) and VH polarization (R = -0.612 (Low)) on above graound carbon stock value. 2) How to Estimate Above ground carbon stock on community forest in Sukoharjo was obtained from Sentinel-1 SAR data using VH polarization with chosen simple linear regression equation (R2 = 0.375; RMSE = 101.1648) is Y = -61.499 -493.268 + X. The Total of above ground carbon stock in Sukoharjo Regency is 228,456.36 tons of 7738.287 hectares community forest and it has a spread spatial distribution pattern at random and clustered. The largest above ground biomass carbon stock is in the community forest of Bulu Sub-district is 49540.21 tons (1782.008 ha) and least in the Gatak Sub-district is 49.50 tons (1,357 ha)

Analisis Kesesuaian Lahan Untuk Habitat Bertelur Penyu Lekang(Lepidochelys Olivacea)Di Sebagian Pesisir Pantai Pelangi Kabupaten Bantul

This research was conducted in the coastal areas OF Pelangi Beach, Kretek, Bantul. The aims of this research are: (1) analysis of Lepidochelys Olivacea nesting ground suitability with the appropriate physical parameters of environment, and (2) analysis of Lepidochelys Olivacea nesting ground suitability. This research used a survey method, survey to get sample data using purposive sampling method with sample consider turtle landing sites to lay their eggs (nesting ground) in the coastal areas of Pelangi Beach. Analysis of data spatial was performed using weighted tiered quantitative methods with the physical parameters used are slope of beach, sand texture, land surface temperature, and barrier of parameter is land use. The resulting suitability map was analyzed with the location of actual turtle nesting grounds in Pelangi Beach. The purpose of these analysis was to assess the accuracy of the map. The results show that the physical parameters that influence with suitability in the coastal areas of Pelangi Beach are slope of beach and land use. Most of the coastal areas of Pelangi Beach include in quite approciate class for Lepidochelys Olivacea nesting ground and patches included in suitable and not suitable class. These results indicate that an effect of parameter as slope of beach, landuse and land surface temperature can reducing the interest of the turtle to lay eggs, but they can be solved by natural spring nesting and further treatment

Pencemaran Air Sungai Garuda Akibat Pembuangan Limbah Industri Tahu Di Kecamatan Sragen Kabupaten Sragen

Penelitian ini dilakukan di Kecamatan Sragen Kabupaten Sragen yang bertujuan untuk mengevaluasi kualitas air Sungai Garuda untuk irigasi yang telah mengalami pencemaran dari limbah industri tahu. Selain itu, juga ingin mengetahui adanya proses swa penahiran di Sungai Garuda. Metode yang digunakan dalam penelitian ini adalah survey. Survey meliputi pengamatan dan pengukuran secara sistematis. Data yang digunakan dalam penelitian ini terdiri dari data primer dan data sekunder. Data primer meliputi DHL, pH, Ca, Mg, Na, K, SAR dan BOD. Adapun data sekunder meliputi data curah hujan, peta administrasi, peta geologi, dan peta penggunaan lahan, data-data tersebut diperoleh dari instansi terkait. Pengambilan sampel air dilakukan dengan metode purposive sampling, yaitusampel yang dipilih secara cermat dengan mengambil objek penelitian yang selektif dan mempunyai ciri-ciri yang spesifik. Maksudnya ialah pengambilan sampel didasarkan kriteria jarak dan sumber polutan. Jarak antara sumber pembuangan limbah pada sungai atau saluran irigasi. Adapun sampel diambil 6 buah. Selajutnya sampel air dianalisa di laboratorium untuk mengetahui kandungan unsur-unsur kimianya. Hasil analisa air dibandingkan dengan baku mutu kualitas air untuk irigasi. Hasil penelitian ini menunjukkan bahwa kualitas air Sungai Garuda untuk irigasi sesuai dengan standar baku air untuk irigasi. Kelas kualitas air irigasi berdasar SAR dan DHL mempunyai kelas C1-S1 dan C2-S1. Kelas C1-S1 mempunyai arti bahwa air mempunyai salinitas rendah dapat dipergunakan untuk irigasi dan bersodium rendah yang dapat digunakan untuk mengairi hampir segala jenis tanah. Kelas C2-S1, air bersalinitas sedang dapat digunakan untuk irigasi dan bersodium rendah. Swa penahiran air dapat berlangsung di Sungai Garuda pada jarak 750 m setelah masuknya limbah tahu. Ditandai dengan turunnya nilai konsentrasi BOD yang disebabkan proses alami pada sungai yaitu kekeruhan berkurang melalui proses sedimentasi, bertambahnya oksigen terlarut karena adanya kemampuan reaerasi yang mengakibatkan oksigen berdifusi dan juga terjadinya pengenceran karena adanya pasokan air baru

Pemodelan Sistem Informasi Geografis Untuk Analisis Kerusakan Dan Banjir Limpasan Sungai Wawar Bagian Hilir Sub Das Wawar Di Kabupaten Purworejo

The downstream subzone Wawar in Purworejo has the potential flood of high runoff. Recorded in 2013 there has been a flood disaster that hit Purworejo that hit most downstream subzone Wawar which resulted in many farms and villages inundated. This research was conducted in the downstream part of the subzone Wawar with the aim to (1) determine agihan damage that occurs as a result of land use around the river flood runoff from the modeling results, (2) analyze the variation damage land use modeling based on a scale of flood discharge 2, 5, and 10. The method used in this study is the experimental method using plan Q2, Q5, and Q10. Rational method in determining the flood discharge. Supported by secondary data rainfall for 24 years, the main river geometry data, and Landsat 8. The unit of analysis is the use of land around the main river. Results from this study are maps agihan river runoff flood discharge plan Wawar with Q2, Q5, and Q10. Spread Wawar’s river runoff flooding hit 23 villages in the downstream, the village took the village with the widest puddle. Based on the results of the calculation of Q2 amounted to 212.02 debit m3 / s, Q5 at 279.18 m3 / s and large discharge Q10 plan is for 328 m3 / s. Extensive damage to most land use is dominated by the use of irrigated land and settlements. Extensive irrigated land are flooded with an area of 107.28 ha Q2, Q5 area of 179.97 ha and 441.53 ha area Q10. Residential land area flooded with an area of 106.72 ha Q2, Q5 covering an area of 156, 93 ha, and Q10 area of 228.18 ha. Prediction flood runoff downstream subzone Wawar will hit approximately 23 villages spread lengthwise along rivers with a variety of land use fields, irrigated fields, settlements, thickets, meadows, and gardens. Keywords: Modeling, Flood, Downstream, subzone Wawar, Geographic Information System

Analisis Kesadahan Air Tanah Di Kecamatan Toroh Kabupaten Grobogan Propinsi Jawa Tengah

Mayoritas masyarakat di Kecamatan Toroh menggunakan air tanah untuk memenuhi kebutuhan rumah tangga. Peralatan rumah tangga yang digunakan untuk merebus air terdapat endapan kerak. Hal tersebut diduga kesadahan air cukup tinggi. Oleh karena itu, air harus diendapkan dan disaring terlebih dahulu sebelum digunakan sebagai air minum atau memasak. Gejala kesadahan air yang tinggi juga dapat diamati dari sabun yang sulit berbusa. Akibatnya, masyarakat menambahkan detergent cukup banyak untuk keperluan mencuci. Penelitian ini bertujuan untuk menganalisis agihan kesadahan air tanah dan untuk mengidentifikasi jenis kesadahan air tanah di Kecamatan Toroh. Metode penelitian yang digunakan adalah metode survei. Unit analisa yang digunakan adalah satuan bentuklahan. Teknik pengambilan sampel air tanah secara purposive random sampling. Analisa pada penelitian ini adalah analisis deskriptif komparatif. Hasil penelitian menunjukkan daerah penelitian termasuk dalam klasifikasi air yang sadah. Kadar kesadahan air tanah tertinggi yang melebihi standart berada pada satuan bentuklahan D1 yaitu sebesar 554,1 mg/L dan tingkat kesadahan terendah pada satuan bentuklahan S7 yaitu sebesar 150,5 mg/L. Jenis kesadahan sementara tertingi pada satuan bentuklahan D1 yaitu sebesar 371,9 mg/L dan terendah pada satuan bentuklahan S7 yaitu sebesar 46,2 mg/L. Jenis kesadahan tetap tertinggi pada satuan bentuklahan S5 yaitu sebesar 222,6 mg/L dan terendah yaitu 0 pada satuan bentuklahan F1

Evaluasi Kualitas Air Sungai Bawah Tanah Di Area Goa Suruh Untuk Air Minum Desa Pucung Kecamatan Eromoko Kabupaten Wonogiri

Penelitian ini berjudul Evaluasi Kualitas Air Sungai Bawah Tanah di Area Gua Suruh Untuk Air Minum Desa Pucung Kecamatan Eromoko Kabupaten Wonogiri. Dalam penelitian ini bertujuan untuk mengetahui kualitas air sungai bawah tanah Gua Suruh dalam menambah persedian air minum penduduk Desa Pucung Eromoko Wonogiri dan memberikan data distribusi bakteri Escherechia Coli dan kadar zat kimia yang terkandung dalam air tanah Gua Suruh. Dalam pelaksanaan penelitian ini metode yang digunakan adalah metode survai dan uji laboratorium. Survei dilakukan untuk melakukan penelusuran sungai bawah tanah Gua Suruh. Analisis laboratorium untuk menentukan kualitas fisik, Kimia, dan biologi air sungai bawah tanah. Teknik pemilihan sampel dalam penelitian ini dilakukan secara sistematik sampling.Artinya sampel diambil pada setiap titik dengan jarak 200 m pada sungai bawah tanah Gua Suruh. Bedasarkan hasil pengamatan dan analisa laboratorium, penelitian ini dapat diambil kesimpulan: Kondisi Sungai bawah tanah Gua Suruh yang dipergunakan untuk air minum belum memenuhi standar air minum, karena ada bakteri Colli yang melebihi ambang batas baku mutu air untuk air minum. Namun sifat fisik (bau, rasa, warna, suhu, total zat padat terlarut,kekeruhan) masih standar dengan baku mutu air Kep. Menkes RI No 82 tahun 2001. Untuk itu dalam penggunaannya sebelum diminum harus dimasak dengan suhu 100°C untuk membunuh bakteri Collinya.Data distribusi bakteri Colli pada jarak 0 -200 dan jarak 1400 m baik. Karena paremeter fisika, kimia, dan biologinya tidak melebihi ambang batas baku mutu air untuk air minum. Namun pada jarak 200 – 1200 kualitas sungai bawah tanah Gua Suruh buruk, hal ini disebabkan oleh kandungan bakteri Collinya yang melebihi ambang batas baku mutu air untuk air minu

Pola Persebaran dan Potensi Mata Air di Bentuk Lahan Karst di Kecamatan Giriwoyo Kabupaten Wonogiri

ABSTRACT This research was conductedin The Sub DistrictGiriwoyo Distric ofWonogiriwhich aimstodescribe thespread ofthe springsas well asclassifyingthe qualityandquantity ofspringsfordrinkingwater supplyin the districtpopulationSub DistrictGiriwoyo Distric ofWonogiri.The method usedin this study isa surveyand laboratory testing. The data usedin this study consistedofprimary dataandsecondary data. Primary dataincludephysical parameters, chemical parameters, bacteriologicalparameters. As for thesecondary dataincludes dataof rainfall, administrativemaps, geologicalmaps, andmapsof land use, the dataobtainedfrom therelevant agencies. Water samplingis donewithpurposiverandom samplingmethod, as for considerationincludethe existence ofspringsusedin eachclass areaof karst areas, locationsspringsare usedfor the needs ofthe populationof eachvillagewill be takenonesamplesprings. The number of samplestaken8, hereinafterwater samplesanalyzedinthe laboratory to determinethe content ofthe elementsof physics, chemistry, andbakterilogi. Wateranalysis resultscompared withwater quality standardsfor drinking water. The research results show class II springs to discharge between 0.2 to 14.3 liters / sec, average quality already meet the standards, not only in Giriwoyo that due to its chemical properties, especially the pH 6.2 including low because under the minimum quality standard 6,5- magnitude 8.5, and total coliform (1100 / 100ml) is still above the maximum limit. For class III all the springs have to meet the standards and debit springs that exist between 2 to 3.1 liters / sec. Classification of the discharge area of research there are 3 classes. Class 4 with a discharge range (10 ≤ X <100) liters / sec have good water quality for drinking water. Class 5 with a discharge (1 ≤ X <10) liters / sec which has good water quality for drinking water, while the region Giriwoyo poor water quality because the content of pH below the minimum limit (6.2) and total colliform above the maximum limit ( 1100 / 100ml). Class 6 with a small discharge range (0.1 ≤ x <1) liter / sec have good water quality

Identifikasi Lokasi Prioritas Konservasi Pesisir dan Pulau-pulau Kecil di Provinsi Maluku Berdasarkan Konektivitas Darat-Laut

Maluku as an archipego province owns a high biodiversity particularly lays on its coastal areas. Aside from the richness of its biodiversity, the status of Maluku as an archipleago province comes with its own threads, one of them is the safety of these small islands themselves. The existance of the richness of coastal biodiversity and the threads indicate the requirement a protection specifically on its coastal areas and small islands. This effort is in line with the government's target which proposes 20 ha of Kawasan Konservasi Perairan, Pesisir dan Pulau-pulau Kecil in 2020. Conservation areas in Indonesia often ignores the relationship of land-sea, meanwhile the connectivity between the two are highly crutial, in other words, it is important to consider those two elements in creating the conservation areas. This observation has objects to (1) determine the coastal conservation priority area location dan the small islands in Maluku Province based on the spatial distribution of biodiversity with the potential connectivity between land and sea, and (2) review the types of protectable coastal biodiversity in the coastal conservation and small islands priority location in Maluku Province based on potential connectivity between land and sea. This observation applies systematic conservation planning with symmetrical connectivity direction employs Marxan and results in eleven potential priority areas with seven of them yet have conservation areas. These seven areas own mangrove, coral reefs, and/or seagrass considerable as new conservation areas. Keywords : Kawasan Konservasi Pesisir dan Pulau-pulau Kecil, Systematic Conservation Planning, Land-Sea Connectivity

Analisis Pencemaran Kualitas Air Sungai Bengawan Solo Akibat Limbah Industri di Kecamatan Kebakkramat Kabupaten Karanganyar

Pollution of the river water is often triggered by the increasing complexity of various human activities, including the activities of industrial production. Industrial activity in district Kebakkramat which produces liquid waste generally circulate water discharge to streams, which then leads to a decrease the water quality of Bengawan Solo River, marked by physical changes water into blackish-coloured and the onset of the smell on the water, which certainly gives the indication of degradation of water quality of the River, which also affect the intensity of the natural ability of the river water in the self purification process. The purpose of this study, namely: 1) identifies the distribution of water quality pollution of the Bengawan Solo River; 2) determines the point of self purification process; 3) evaluate water quality conditions of the Bengawan Solo River contaminated by water quality standards that have been set. The research method used was a survey of the field, namely by making observations and measurements directly in the field. River water sampling using a purposive sampling technique, taking into account the criteria pollutant sources and the distance of the pollution. Types of data used include primary and secondary data, in the form of a data stream network maps and administrative maps for the approximate location of the sample, as well as the results of the value of the concentration of each of the parameters, both physically and chemically obtained from direct measurements in the field and laboratory test results. As for the concentration value results analyzed with trend analysis techniques, which linking between the concentration of the element to identify the contamination with distance distribution of pollution, as well as determine distance of self purification process, While the evaluation of water quality standard used comparative descriptive analysis that compares between the conditions of the water quality of the river areas of research with water quality standard according to the Government Regulation Number 82 of 2001. The results showed that: 1) distribution of water pollution the Bengawan Solo River research area showed fluctuating pattern, where the four parameters are related of the contaminating waste level (TSS, BOD, COD, and Sulfides), have an increased concentration at the point 3 and 5, as well as a decrease in concentration in the point 4 and 6; 2) The process of self purification Bengawan Solo river water contaminated can occur which is characterized by a decrease in concentration in the point 4 and 6. But based on the phases of the process, has not yet reached the final phase of the process of self purification, the zone of clean water; 3) Based on Government Regulation Number 82 of 2001, showed that the water quality conditions of the Bengawan Solo River from the six parameters investigated, two of them (pH and Total Suspended Solid) as a whole meets the quality standards level I - IV, levels of Dissolved Oxygen showed a tendency the quality standard level III - IV and Chemical Oxygen Demand levels are only eligible at two locations streams, namely at point 1 (level III - IV) and the last location (point 6) meets the level IV. In addition, there are two parameters which overall are not qualified and exceed the specified threshold, namely Biological Oxygen Demand and Sulfide (H2S)