<p>ABSTRACT<br /> <br />Tidal swamp lands containing acid sulphate is easily become idle land, which can be fixed by reducing oxidation process of pyrite (FeS2). The pyrite oxidation causes disturbance on the growth and yield of rice plant. An experiment was conducted by means soil leaching in order to reduce accumulation of pyrites. The research had been conducted in Simpang Jaya village, Barito Kuala District in 2012 using a split plot design with three replications. As the main plot was leaching, and no leaching treatment, while as the subplot was soil tillage, i.e., 1) control, 2) weeds cleared without tillage, 3) soil tillage at a depth of 15 cm, and 4) soil tillage at a depth of 30 cm. The results showed that the leaching treatment combined with tillage at a depth of 15 cm or 30 cm increased the number of rice tillers, shoot dry weight, and number of panicles per hill, and number of seeds per hill, thus the leaching treatment was able to increase rice production.</p><p>Keywords: acid sulphate, leaching, pyrite, tidal swamp land</p>

The conservation measures of peat or peat maintain under natural conditions many proposed to address the increase in carbon emissions from land use change and efforts to minimize of fire, but it can not entirely implemented due to peat land has the potential for development of the agricultural commodities is supported by extensive area. Peatlands can be productive agricultural land with appropriate methods. Water management is required to regulate groundwater levels which is suitable for plants, nature conservation and restore hydrological conditions, such as reducing the vulnerability to fire. The percentage of water content vertically and functional groups of organic materials that have both hydrophilic and hydro phobic properties can be an indicator of vulner ability to fire. This research was conducted by survey method and then field sampling on land use rubber. Water management carried out with the installation of water-gate in the drainage channels (Tabat System). There are two experimental units in peatland, namely: 1) the drainage channel is equipped with the water-gate/Tabat (KST), Tabat size adjusted to the channel dimensions, and 2) there are no water-gate on the drainage channel (KNT). The parameters are observed of CO2 fluxes, ground water levels, water content and functional groups of organic matter. The purpose of this study was to determine the role of “tabat system” in mitigating CO2 emission sand vulner ability tofire. The results showed that the water management “tabat system” can reduce CO2 emissions by 47.6%, reducing hydrophobic properties of peat (0-50 cm soil depth) of 6.6% and is able to prevent loss of water-holding ability of fibric peat by 26.6%. This indicates that water management measures is required as one effort to maintain of peat to remain moist condition, so that changes in peat properties of hydrophilic become hydrophobic can be prevented, and reduce peat vulnerability to fire.Keywords: Carbon dioxide emissions, Peatland, Vulner ability to fire, Water management [How to Cite: Siti Nurzakiah, Nurita and Dedi Nursyamsi. 2016. Water Management “Tabat System” in Carbon Dioxide Mitigation and Vulnerability to Fire On Peatland. J Trop Soils 21: 41-47. Doi: 10.5400/jts.2016.21.1.41]

Peatland conservation to maintain the natural condition is the best way to resolve carbon dioxide emission problem due to land use change; and to reduce fire in peatland. However, peatland conservation in extensive agricultural peatland is difficult to execute (or accomplish). Peatland can be productive for agriculture with the appropriate technology. Water management is required to regulate groundwater level which is suitable for plants and maintain soil moisture. Tabat is a water management system carried out with the installation of water-gate in the drainage channels to regulate groundwater level. The purpose of this study was to determine the role of tabat system in mitigating CO2 emissions. This research was conducted by survey method and then field sampling on rubber land use. The research carried out in two experimental units in the peatland; 1) the drainage channel is equipped with the water-gate/Tabat (RST), Tabat size adjusted to the channel dimensions, and 2) there are no water-gate on the drainage channel (RNT). The parameters of CO2 fluxes, groundwater levels, and water content were carried out from January to December 2015. The results showed that the water management of Tabat System reduced CO2 emissions by 23.6% and enable to prevent loss in water-holding ability of fibric peat by 13.9%. This indicates that water management Tabat System enable maintain peat moisture and as a CO2 mitigation.

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Sampah merupakan bagian yang tidak dapat terpisahkan dari kehidupan masyarakat, terutama di daerah perkotaan. Sampah apabila tidak ditangani secara baik dan benar dari sumber sampah, maka akan menimbulkan masalah terhadap kesehatan, sosial, ekonomi dan keindahan. Tujuan dari penelitian ini adalah untuk mengetahui efektivitas komposter takakura dan komposter sedehana dalam pembuatan kompos dari samapah organik. Penelitian ini dilakukan di Workshop Jurusan Kesehatan Lingkungan Poltekkes Kemenkes Mamuju. Jenis penelitian: penelitian eksperimen untuk menilai efektivitas komposter takakura dan komposter sederhana dalam pembuatan kompos sampah organik. Metode: Subjek penelitian ini yaitu komposter takakura dan komposter sederhana dalam pembuatan kompos sampah organik. Data yang diperoleh dari hasil analisa lapangan diolah dan disajikan dalam bentuk tabel, untuk selanjutnya di olah secara deskriptif sehingga dapat ditarik kesimpulan dan saran. Hasil: komposter takakura memiliki waktu pengomposan selama 22 hari, dengan warna coklat kehitaman, bau seperti tanah, pH 7,5, suhu 29o C dan kadar air sebesar 49,3% dan 34%. Sedangkan untuk komposter sederhana memiliki waktu pengomposan selama 28 hari, dengan warna coklat kehitaman, bau seperti tanah, pH 7, suhu 28o C, dan kadar air sebesar 44% dan 37%. Kesimpulan: komposter takukara lebih baik dalam pengomposan dibandingkan dengan komposter sederhana dari segi waktu pengomposan. Disarankan untuk penelitian selanjutnya untuk melakukan penelitian terkait kompos dengan melakukan perbandingan perlakuan variasi penggunaan aktivator E-M4 pada setiap kompos