Impact of coastal inundation on ecology and agricultural land use case study in central Java, Indonesia

Focusing on the regional scale, this study provides information concerning the existing ecological problems associated with coastal inundation in the northern part of coastal area in Central Java Province, Indonesia. The objectives of this paper are to map the coastal inundation, to investigate the impact of coastal inundation on coastal environment and ecology, and to assess the impact of inundation on agricultural land use. An integration of techniques, namely neighborhood analysis, iteration operation, and superimposed analysis method has been applied to generate the digital map and to analyze the impact of inundation. Fieldwork measurement has been done using cross-profiling in order to observe the impact of inundation on the coastal ecosystem. Based on the scenario of 100 cm and 150 cm of inundation, the affected area is about 15 207.6 Ha and 16 687.31 Ha, respectively. Fishpond, dry farming and paddy field are the most affected agricultural areas due to coastal inundation

DISASTER AND RESILIENCE FOR THE 2007 FLOOD EVENT IN PART OF SUKOHARJO REGENCY

Community resilience has become an important factor in a disaster mitigation plan. Resilience is related to the ability to recover from a disaster and is for every person different. This research intends to assess community resilience for flood disaster. Factors for quantifying community resilience were asked to respondents by giving questionnaire and interviewing them, and FGD was also done in order to generate flood map based on the community knowledge. The FGD result shows that the flood depth in the study area varies from 0 until 300 cm, and the duration of inundation variesfrom 1-7 days. Flood also caused losses, and the distribution of the losses was Rp. 0 - 100,000,000,- although, in general, the losses was merely below Rp. 2,000,000,-. Based on the weighting result, the resilience value of the respondent is distributed from 0.113 until 0.700. The average resilience value of Laban village is 0.403, and 0.368 for Kadokan village. The resilience value was mostly influenced by human capital. In order to increase the community resilience, government has establishedflood control devices and rehabilitated the dike along the river

Potensi Bencana Tsunami dan Kesiapsiagaan Masyarakat Menghadapi Bencana Studi Kasus Desa Sumberagung Banyuwangi Jawa Timur

This research aims to, 1) identify the physical condition and vulnerability due to tsunami at Pancer, Sumberagung Banyuwangi and 2) identify the awareness program done by community to reduce the risk and impact due to tsunami. Field observation and analysis of morphology, topography and physical characteristic of the coastal area of Pancer has been done in this research. Interview with key person and stakeholders has been conducted in order to understand the awareness system and program done by the community. Descriptive analysis has been used to describe the research result. From the topographical point of view, study area consist of lowland and hilly area. Lowland area is dominated by settlement and paddy field, meanwhile the hilly area is mainly for forest and dry farming system. Lowland area is the most vulnerable area for inundation due to tsunami. Coastal community has knowledge on tsunami hazard. Many program has been implemented to strengthen the community capacity and awareness, such as campaign, workshop for evacuation route identification, and evacuation simulation

DISASTER AND RESILIENCE FOR THE 2007 FLOOD EVENT IN PART OF SUKOHARJO REGENCY

Community resilience has become an important factor in a disaster mitigation plan.Resilience is related to the ability to recover from a disaster and is for every persondifferent. This research intends to assess community resilience for flood disaster. Factorsfor quantifying community resilience were asked to respondents by giving questionnaireand interviewing them, and FGD was also done in order to generate flood map based onthe community knowledge. The FGD result shows that the flood depth in the study areavaries from 0 until 300 cm, and the duration of inundation varies from 1-7 days. Floodalso caused losses, and the distribution of the losses was Rp. 0 - 100,000,000,- although, ingeneral, the losses was merely below Rp. 2,000,000,-. Based on the weighting result, theresilience value of the respondent is distributed from 0.113 until 0.700. The averageresilience value of Laban village is 0.403, and 0.368 for Kadokan village. The resiliencevalue was mostly influenced by human capital. In order to increase the communityresilience, government has established flood control devices and rehabilitated the dike alongthe river

The Relationship between Total Income and Groundwater Utilization on Fluviomarine Landform Area in Jakarta

Approximately 40% of Jakarta is below sea level when the tide is in, which is referred to as a fluviomarine landform. This study aims: (a) to analyse the relationship between total income and household water demand, and (b) to analyse the relationship between total income and the proportion of groundwater utilization. It uses quantitative and qualitative analysis survey methods, as well as sampling methods, to represent the population. The population of this research is comprised of households that use groundwater on land units made from two classes of landform, two classes of settlement pattern, and three classes of settlement density. To determine the 30 wells, samples with proportional random sampling of the land units formed with groundwater samples have been taken at a radius of 100m from each well sample of 110 households. Quantitative and qualitative approaches have been used to prove the research aims. The analysis of this study indicates that the total income is proportional to household water demand but that it is inversely proportional to the share of groundwater utilization. The results also show that groundwater is not the only source to fulfil household water demand, and that it is necessary to utilize other sources of water

Analisis Ekologis Meiofauna Sebagai Bioindikator Di Pesisir Pantai Losari, Makassar

Abstract.  The research aims to analyze ecological value of meiofauna as bioindicator in Losari Coast, Makassar. The total meiofauna abundance was 66791 indv/m2, consisted of 12 phylum and 91 species/genus. The stations located at the mouth of the Jeneberang River, Tanjung Merdeka, and the Tallo River  are research sites with high levels of abundance, due to the presence of organic contaminants produced by surrounding anthropogenic activity that trigger high growth of meiofauna.  ostracoda, oligochaeta, tunicata and ciliophora are the phylum with high levels of abundance compared to other meiofauna, as it that phylum has a high adaptability to the entry of pollutant material in the water. Diversity index and evenness indicates  the meioufauna in the Losari Coast categorized by a high level of diversity and evenly distributed. While  dominance index indicated that no dominant meifauna species, except at research stations located around the Losari Beach reclamation project. Keywords: Abundance, meiofauna, anthropogenic, Coastal Losari Beach, Makassa

ANALISIS SPASIO-TEMPORAL BANJIR GENANGAN AKIBAT KENAIKAN MUKA AIR LAUT DI WILAYAH KEPESISIRAN KABUPATEN JEPARA (Kasus: Kecamatan Kedung, Tahunan, dan Jepara)

Kabupaten Jepara yang termasuk pada salah satu daerah yang terletak di Pantai Utara Jawa yang berpotensi terjadi inundasi atau penggenangan akibat kenaikan muka air laut. Terdapat 3 kecamatan di Kabupaten Jepara yang mempunyai potensi bahaya pesisir yang tinggi, yaitu Kecamatan Kedung, Tahunan, dan Jepara. Hal ini dikarenakan oleh faktor gelombang yang tinggi dan menghantam secara langsung wilayah ini akibat imbas angin dan gelombang yang dominan berasal dari arah baratlaut. Data yang digunakan dalam penelitian ini antara lain adalah data pasang surut air laut sebagai acuan skenario tinggi genangan, data titik tinggi dan data penggunaan lahan. Analisis spasial pada penelitian ini adalah berupa analisis genangan di setiap wilayah pesisir di Kecamatan Kedung, Tahunan, dan Jepara dengan menggunakan teknik iterasi pada ILWIS serta luasan penggunaan lahan yang tergenang pada tahun 2020-2060. Analisis temporal merupakan proyeksi kenaikan muka air laut pada tahun 2020-2060 dengan berdasarkan analisis regresi dari data pasang surut air laut

PRAKIRAAN DEBIT BANJIR RENCANA DALAM ANALISIS KAPASITAS TAMPUNG BANJIR KANAL BARAT, PROVINSI DKI JAKARTA

Perubahan tata guna lahan di Jakarta dan DAS Ciliwung berpengaruh terhadap debit banjir Banjir Kanal Barat Jakarta. Maka dalam penelitian ini dilakukan prakiraan debit banjir rencana dalam analisis kapasitas tampung Banjir Kanal Barat Jakarta dengan analisis hidrologi untuk mengetahui besaran debit banjir rencana dengan metode Rasional dan analisis hidraulika dengan program HEC–RAS versi 4.1.0.Hasil penelitian ini menunjukkan bahwa debit banjir rencana yang masuk ke Banjir Kanal Barat Jakarta adalah sebesar 703,14 m3/detik (periode ulang 2 tahun), 1.038,15 m3/detik (periode ulang 5 tahun) dan 1.328,37 m3/detik (periode ulang 10 tahun). Disamping itu, kapasitas tampung eksisting Banjir Kanal Barat Jakarta tidak efektif dalam mengatasi debit banjir atau debit aliran dari pompa–pompa dan sungai–sungai kecil di Jakarta dalam periode ulang 10 tahun akibat terjadi impahan debit sebesar 821,37 m3/detik di Pintu Air Manggarai, 835,58 m3/detik di Pintu Air Karet dan 841,98 m3/detik di Muara (Pantai Indah Kapuk)

KAJIAN KERUSAKAN LINGKUNGAN AKIBAT BENCANA LONGSOR DI KEBONHARJO KECAMATAN SAMIGALUH KABUPATEN KULON PROGO

Bencana longsor merupakan bencana alam yang sering  terjadi di  Indonesia  dan  mengakibatkan  perubahan lingkungan meliputi komponen abiotik, biotik, dan kultural. Longsor sering terjadi di Desa Kebonharjo yang menimbulkan kerusakan abiotik meliputi sanitasi air, tanah, lereng, dan batuan. Ker usakan biotik meliputi vegetasi. Kerusakan kultural meliputi ekonomi dan kesehatan. Penelitian ini bertujuan untuk mengetahui jenis-jenis dan tingkat kerusakan lingkungan, serta merumuskan strategi dan kebijakan pengelolaan lingkungan akibat bencana longsor untuk pelestarian lingkungan. Penelitian ini  menggunakan metode survei  dengan  pendekatan  analisis  kuantitatif dan  kualitatif.  Analisis  kualitatif dilakukan dengan cara menganalisis kondisi topografi di lapangan.  Analisis kuantitatif terhadap bentuklahan  dengan klasifikasi pembagian kemiringan lereng, jenis batuan, jenis tanah, intensitas curah hujan. Untuk mengetahui persepsi masyarakat dilakukan dengan cara wawancara mendalam kepada informan yang telah ditentukan. Hasil analisis tingkat kerusakan lingkungan di Desa Kebonharjo termasuk kategori kerusakan sedang dan kerusakan berat. Strategi pengelolaan lingkungan di Desa Kebonharjo yaitu dengan menerapkan metode vegetatif, mekanik, kimia, dan normatif menyesuaikan dengan kondisi lingkungan aspek  abiotik, biotik, dan kultural pada setiap  lokasi akibat bencana longsor. Penerapan kebijakan pengelolaan lingkungan dengan upaya merelokasi rumah warga yang tinggal di kawasan bencana longsor tingkat tinggi agar terhindar dari bahaya bencana longsor