Jurnal SPATIAL Wahana Komunikasi dan Informasi Geografi
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STATUS MUTU KUALITAS AIR SUNGAI GARANG HILIR KAITANNYA DENGAN PERUBAHAN PENGGUNAAN LAHAN DI SUB DAS GARANG HILIR SEMARANG
Get PDFChanges in land use that occur in the watershed indicate a decrease in water quality one of them in the Garang Hilir Sub watershed . Land use in watershed has a great impact on river water quality. Changes in land cover and land management practices have been considered key factors affecting changes in hydrological systems, leading to changes in runoff and water quality. The objectives of the study were to assess changes in land use, changes in water quality and the linkages between them. The analysis used is land use change and calculation of Water Quality Index-Garang Hilir River (IKA-SGH). Determination of Water Quality Index of Garang Hilir River (IKA-SGH) using objective analytical approach secondary data of water quality of measurement from Environmental Agency (BLH) of Central Java Province from September 2002 to June 2014 in 4 (four) monitoring sites in Garang River. Water quality index is done in three stages namely the selection of dominant parameters with the help of Factor Analysis, the weighting of dominant parameters with Analytical Hierarchy Process (AHP) approach is Pairwise comparison and making sub-index graph. The effect of land use change on water quality using quantitative descriptive analysis. The data used to determine the relationship is the average value of the Garang River Water Quality Index (IKA-SGH) and the extent of land use change from 2002 to 2014. In general the quality status of water quality in Garang Hilir River from 2002 to 2014 is in the "Medium" category ( 50.1 - 70) to "Good" (70.1 - 90). The more towards the estuary, the decrease in IKA-SGH value tends to occur in the river segment. Land use from 2002 - 2014 in the study area tends to change widely in each year. The settlements experienced a widespread increase in their use (12%), while irrigated rice fields experienced the largest reduction of area (-77%). The more agricultural land and cultivated land that transformed into settlements and other constructed land such as for industry, shrubs and the increasing of settlements and other wastes (industrial) and open land in Garang Hilir Subwatershed, causing the decrease of water quality of Garang Hilir River.
 
LATAR BELAKANG PENDIDIKAN DAN IMPLIKASINYA TERHADAP KOMPETENSI GURU GEOGRAFI DI DKI JAKARTA
Get PDFGuru berperanan penting dalam pembangunan pendidikan yang diselenggarakan secara formal di sekolah. Proses dan hasil pendidikan yang berkualitas selalu terkait erat dengan kualitas sumberdaya manusia. Dalam konteks kajian terhadap pengembangan kompetensi guru pasca UKG khususnya pada guru bidang studi Geografi di jenjang sekolah menengah atas, maka penelitian ini bertujuan untuk mengetahui hubungan antara latar belakang pendidikan dengan kompetensi guru. Penelitian ini menggunakan pendekatan kuantitatif non-eksperimen dimana variabel latar belakang pendidikan ditelusuri korelasinya dengan kompetensi pedagogik guru Geografi SMA di wilayah Kotamadya Jakarta Timur. Penelitian dilaksanakan di Kotamadya Jakarta Timur selama 6–28 Desember 2015. Populasi penelitian adalah seluruh guru Geografi SMA di wilayah Kotamadya Jakarta Timur yang telah menjalani tes UKG Tahun 2015. Sedangkan sampel target sebanyak 119 guru yang merupakan jumlah keseluruhan peserta tes UKG. Adapun sampel terambil yang dijadikan subyek diperoleh secara purposive sampling dan terpilih 9 responden Data yang diperoleh dianalisis secara deskriptif dan analisis korelasional.
Hasil penelitian menunjukkan bahwa Hasil uji korelasi antara variabel latar belakang pendidikan guru dan variabel kompetensi khususnya kompetensi pedagogik memiliki nilai korelasi 0,56 atau berkorelasi kuat. Kekuatan hubungan variabel latar belakang pendidikan guru (0,133) terhadap variabel kompetensi khususnya kompetensi pedagogik para guru.
Kata kunci : Latar belakang pendidikan guru, Kompetensi guru Geografi, Jakarta Timur
 
PENGARUH FAKTOR-FAKTOR LINGKUNGAN TERHADAP TINGKAT KEKRITISAN DAERAH RESAPAN DI SUB DAS AEK SILANG DAERAH ALIRAN SUNGAI DANAU TIBA
Get PDFRecharge areas was instrumental in arranging water transportation system, therefore has the ability to control surface water to absorb water into the ground so that it can overcome the problem of flooding and drought. Conditions recharge areas greatly affected by the climate (rainfall), soil type, slope and land use types. The research objective was to assess the effect of environmental factors on the critical level of recharge areas and efforts to rehabilitate the recharge areas. Analysis method using valuation techniques critically recharge areas through overlaying maps of slope, soil type, rainfall and land use types in which each map beforehand transformed into map form infiltration. Classification potential criticality ratings recharge areas in the top six classes, namely good, normal naturally, potential critical, fairly critical, critical and very critical. The results show the criticality classification recharge areas in the Aek Silang sub watershed there are four classes, namely good, normal naturally, potential critical and fairly critical. Recharge areas be rehabilitated is a potential critical and fairly critical start with an area of each ​​7607.94 ha (38.40%) and 1384.63 ha (6.99%). Environmental factor that is possible to do the rehabilitation effort is a land use factor, since this factor is more influenced by aspects of human activity, while factors of slope, soil type and rainfall is difficult to control because it is natural. Efforts to rehabilitate both vegetatively and civil technically should be adapted to the physical condition of the land, land capability and suitability
KONDISI SUMUR DAN PEMODELAN ARAH ALIRAN AIRTANAH BEBAS PADA BENTUKLAHAN FLUVIOMARIN DI JAKARTA
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Growing population have an impact on the strategy of fulfillment the water need and degradation of groundwater quality in Jakarta, especially in fluviomarine landforms in Jakarta. The purpose of this study was to determine the condition of wells and create a model of groundwater flow direction on fluviomarine landforms based on the season. Methods in this research study include three main aspects, namely population, characteristics of the object under study, and analysis. The population in this study using 30 groundwater wells sample representative of the population. Relating to the characteristics of the object under study, this study using a survey method. The survey is a sample survey on wells population who still use unconfined groundwater. About data analysis, then in this study used quantitative and qualitative approaches to the modeling of the groundwater flow direction using the Inverse Distance Weighted (IDW) in ArcGIS. The results showed that the unconfined groundwater wells in the study area consisted of dug wells and pantek wells. It is generally known that groundwater levels in the rainy season are higher than the dry season with a depth of groundwater level in the dry season to be deeper than the rainy season. Most of the groundwater level in organic settlements in the study area is below sea level, whereas in planned settlements is rarely found people who use groundwater. The depth of unconfined groundwater well less than 20 m with a thickness of water on the wells in the rainy season are thicker than the dry season. Groundwater flow direction along the north coast of central and western parts likely to lead to the mainland, while the southern part has a groundwater flow that is likely to lead to the North. Keywords: Fluviomarine Landforms In Jakarta; Unconfined Groundwater; Groundwater Flow Directio
ANALISIS USAHA TANI KENTANG DI DESA SEMBUNGAN KECAMATAN KEJAJAR KABUPATEN WONOSOBO JAWA TENGAH
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Penelitian ini bertujuan untuk mengetahui faktor-faktor yang mempengaruhi produksi kentang dan kelayakan usaha tani kentang di Desa Sembungan Kecamatan Kejajar Kabupaten Wonosobo Jawa Tengah. Penelitian dilakukan pada Bulan April-September 2015. Penelitian dilakukan di Desa Sembungan sengaja dilakukan karena desa ini penduduknya mengusahakan kentang sebagai hasil pertanian utama. Metode yang dilakukan dalam penelitian ini adalah deskriptif dengan menggunakan pendekatan survey. Populasi dalam penelitian ini adalah seluruh petani pengolah lahan tanaman kentang di Desa Sembungan yaitu sebesar 30 petani dengan luas lahan garapan yang bervariasi. Teknik pengambilan sampel dalam penelitian ini menggunakan sistem acak berlapis sebanding berdasarkan luas penguasaan lahan. Analisis data penelitian dilakukan secara deskriptif yang berupa perhitungan persamaan matematis. Berdasarkan penelitian faktor yang mempengaruhi hasil panen tanaman kentang di daerah penelitian dari tabel diperoleh nilai r square sebesar 0,994 yang artinya sebesar 99,4% hasil panen dipengaruhi oleh pemilihan bibit, pupuk kandang, pupuk ZA, Pupuk KC, pengggunaan pestisida, penggunaan fungisida dan penggunaan tenaga kerja yang terampil. Faktor yang tidak mempengaruhi hasil produksi kentang yaitu luas lahan, penggunaan pupuk TSP, NPK. Diketahui bahwa rata-rata RC yaitu 1,5 artinya secara rata-rata budidaya kentang di daerah penelitian layak dilakukan. Kata Kunci : Faktor, Produksi, Kentang, Usahatan
EVALUASI PENGELOLAAN EKOSISTEM MANGROVE PADA DAERAH PERLINDUNGAN LAUT DI DESA BLONGKO, KECAMATAN SINONSAYANG KABUPATEN MINAHASA SELATAN PROVINSI SULAWESI UTARA
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Mangrove ecosystem in Blongko village has many functions for coastal area. The aims of this research was to describe potential and the existing condition of mangrove ecosystem and also to give directive policy strategic for conservation mangrove ecosystem in this area. This research used primary and secondary data. Primary data was gathered by field observation and in-depth interview with 100 respondens by questionnary. Secondary data was gathered by unravel various literature and related institution. The development indicators was used to determine the policy strategic of sustainable mangrove ecosystem. Its was threat, factor, and constraint causing degradation mangrove ecosystem. This research got three policy strategy to carry on of sustainable mangrove ecosystem. Its was increase of human resources quality, protection and continuation of mangrove ecosystem, and low and institution reinforcement. This strategy was expected to depress degradation in mangrove ecosystem. Keywords : Coastal Area; Blongko village; Mangrove Ecosystem; Policy Strategy
PEMBERDAYAAN PENDUDUK PESANGGEM UNTUK PENGENTASAN KEMISKINAN DAN PERCEPATAN PEMULIHAN SUMBERDAYA HUTAN MURIA
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Tujuan penelitian ini adalah upaya pengentasan kemiskinan dan percepatan pemulihan sumberdaya Hutan Muria di Kabupaten Pati-Jawa Tengah,khususnya bagi penduduk Pesanggem. Populasinya petak Pengelolaan sumberdaya Hutan Berbasis Masyarakat (PHBM), sampel area ditetapkan berdasarkan umur tegakan. Responden penduduk pesanggem, pengurus Lembaga Masyarakat Desa Hutan (LMDH), dan aparat Perhutani. Data sekunder didapat dari LMDH dan dokumen kebijakan PHBM. Data primer dari observasi, wawancara, pengukuran kondisi fisik, plot model, dan FGD. Analisis data didasarkan pada pendekatan geografi yakni analisis keruangan, tabel silang atas pola tanam terhadap produk pertanian. Demplot percontohan sebagai bentuk pemberdayaan yang dilakukan pada penelitian ini menggunakan lahan garapan seluas 0,25 hektar per 4 orang, dengan tanaman kencur (Kaempferia galanga) di bawah tegakan jati berumur 14 tahun. Pada pelaksanaannya mampu memberdayakan 12 orang penduduk dengan total luas lahan 1 hektar. Keberhasilan bertani kencur diharapkan mampu sebagai agent of change petasi pesanggem lainnya dalam mengentaskan diri dari kemiskinan. Penghidupan berkelanjutan mampu mengentaskan kemiskinan dengan mengubah pola tanam polikultur menjadi pola tumpang gilir dengan struktur pemanfaatan lahan di bawah tegakan (PLDT). PLTD dengan menanam kacang tanah, kencur dan singkong. Budidaya kencur diusahakan sebagai tanaman lantai yang mampu menahan erosi, memperbaiki struktur tanah, dan tidak berkompetitor terhadap tegakan jati. Singkong dipertahankan penduduk karena mudah pemasaran, biaya modal tanam rendah, dan perawatan yang sangat mudah namun perlu jeda waktu (tidak dilakukan sepanjang tahun). Efek lanjut berpengaruh terhadap keberlanjutan penghidupan layak dan keberlanjutan sosial skala luas. Membangun pemahaman untuk memilih pola tanam tumpang gilir menyesuaikan musim dan jenis tanaman. Kata kunci: Keberlanjutan penghidupan, Pemberdayaan, PLDT, Pola tana
DEGRADASI HUTAN PULAU YAMDENA di PROVINSI MALUKU TAHUN 1998 – 2008
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Hutan tropika basah di Pulau Yamdena Kabupaten Maluku Tenggara Barat memiliki potensi untuk dieksploitasi demi memenuhi kebutuhan kayu masyarakat sekaligus menghasilkan devisa negara. Namun di sisi lain isu degradasi hutan di wilayah ini mengundang perhatian untuk dicermati dan ditelaah. Penelitian ini bertujuan menginformasikan kembali tingkat degradasi hutan di Pulau Yamdena. Hasil penelitian menunjukkan bahwa degradasi hutan di Pulau Yamdena dari tahun 1998 sampai 2008 terjadi sebanyak kurang lebih 9.473 ha/tahun. Hasil analisa juga menunjukkan bahwa tingkat degradasi hutan justru lebih tinggi pada areal di luar kawasan konsesi eks IUPHHK-HA (Ijin Usaha Pemanfaatan Hasil Hutan kayu pada hutan Alam(dahulu disebut HPH)) dibanding di areal dalam kawasan konsesi eks IUPHHK-HA. Dengan demikian disimpulkan bahwa degradasi hutan di Pulau Yamdena terjadi disebabkan oleh aktifitas diluar eksploitasi IUPHHK-HA. Kata Kunci : Degradasi hutan, Yamdena Maluku Tenggara Barat
PEMETAAN BAHAYA BANJIR KABUPATEN HULU SUNGAI TENGAH PROVINSI KALIMANTAN SELATAN
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Penelitian ini bertujuan untuk melakukan pemetaan daerah bahaya banjir di Kabupaten Hulu Sungai Tengah Provinsi Kalimantan Selatan. Disain penelitian menggunakan pendekatan survei pada masyarakat di daerah bahaya bencana banjir di Kabupaten Hulu Sungai Tengah Provinsi Kalimantan Selatan.Populasi penelitian adalah masyarakat di daerah bencana banjir. Pemilihan sampel dilakukan dengan metode stratified random sampling. Penelitian ini menggunakan tingkat kerawanan sebagai sampling frame, kemudian sampling frame tersebut dibagi ke dalam empat strata yakni tingkat bahaya tinggi, sedang, rendah dan tidak bahaya. Hasil Penelitian menunjukkan bahwa tingkat bahaya banjir di Kabupaten Hulu Sungai Tengah sebagian besar daerahnya masuk tidak bahaya (957.36 Km2). Bahaya rendah (243,82 Km2), bahaya sedang (455,01 Km2), dan bahaya tinggi (114,91 Km2). Daerah yang tidak bahaya dan bahaya rendah dapat dijadikan sebagai tempat pengungsian apabila terjadi bencana banjir di daerah penelitian. Kata Kunci : Pemetaan, Bahaya banjir
MODEL SPASIAL KERENTANAN DIKAWASAN PESISIR SELATAN TELUK BETUNG KOTA BANDAR LAMPUNG TERHADAP BENCANA TSUNAMI
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Bandar Lampung is an area in Indonesia which has a high level of Tsunami threat. It is due to the position of Bandar Lampung which is located relatively near the meeting point of Indo-Australian plate dan the Eurasian plate; both are plates are relatively active. Other causes are earthquake threat and the existence of Krakatoa which is potential to generate earthquakes which are followed by a Tsunami. The data analysis showed that the potential Tsunami hazard in the coastal city of Bandar Lampung is the predicted distance run up the marinade tsunami that reached a height of 20 meters above sea level. Potential hazards include four districts, i.e. Bumi Waras District, Panjang District, South Teluk Betung District, and East Teluk Betung District. The research method is Cell-Based modeling, the one using the tool model builder in Arc GIS with 1 meter raster grid analysis, which can show and explain in detail the attributes that exist in the region. From Quick Bird image that has of 0.6 meter resolution, the existing condition of the land use can be clearly seen. The results of the analysis showed the vulnerability of Tsunami in the city of Bandar Lampung. The results showed that Bumi Waras District has the highest vulnerability level at Bumi Waras Subdistrict with an area of 85.62 Ha. Panjang District has the highest level of vulnerability at Pidada Subdistrict with an area of 30.16 ha. South Teluk Betung District has the highest level of vulnerability at Pesawahan Subdistrict with an area of 0,02 Ha. East Teluk Betung District has the highest level of vulnerability at Kota Karang Subdistrict with an area of 32.11 Ha. Keywords: Tsunami disaster, Vulnerability and cell-based modelin