Abstrak : Pengendalian laju perubahan penggunaan lahan sangat diperlukan agar keberlanjutan lingkungan dapat tetap terjaga. Salah satu upaya untuk menjaga keberlanjutan tersebut adalah dengan mempelajari perubahan yang terjadi beberapa tahun sebelumnya.Perubahan ini dapat dipelajari dengan pendekatan model Markov -Cellular Automata.Kabupaten Cianjur merupakan salah satu kabupaten yang rawan terhadap bencana longsor, sehingga perlu dilakukan pengendalian perubahan penggunaan lahan agar dapat terwujudnya keberlanjutan lingkungan yang sesuai dengan arahan tata ruang yang telah ditetapkan. Tujuan penelitian ini adalah mengetahui perubahan penggunaan lahan yang terjadi dan mengevaluasi penggunaan lahan tersebut terhadap RTRW serta menyusun arahan pengendalian perubahan penggunaan lahan. Hasil analisis menunjukkan Kabupaten Cianjur mengalami penurunan luasan hutan yang cukup besar yaitu sebesar 10,3% dan ketidaksesuaian penggunaan lahan dengan RTRW sebesar 10,4%. Hasil prediksi memperlihatkan bahwa perubahan tanpa ada skenario menyebabkan persentase ketidaksesuaian penggunaan lahan meningkat drastis menjadi 20,5%. Skenario dimana dilakukan pengembalian fungsi hutan dapat menekan persentase ketidaksesuaian menjadi 16,6%.Kata Kunci: Pengendalian, Perubahan Penggunaan Lahan, Markov -Cellular Automata Abstract : Controlling the rate of land use change is necessary due to maintaining environment sustainability. One of the efforts is studying the changes that occur in the past few years. These changes can be studied by Markov -Cellular Automata model. Cianjur is one of the regency that has a high risk of landslide hazard, so it is necessary to control land use change in order to realize environmental sustainability in accordance with the spatial plan of Cianjur regency (RTRW). The purpose of this study was to see land use changes that occurred and evaluated with the spatial plan (RTRW) and also to conduct controlling scenarios of land use changes. The analysis showed that Cianjur regency has drastically decreased in forest area up to 10,3% and landuse inconsistency of 10,4%. The prediction results showed that landuse change without intervention would dramatically increase inconsistency up to 20,5%. Land use scenario of restoring forest could reduce inconsistency up to 16,6%.
Paddy field is the agriculture land that produces rice and needs to be protected because of the threat of high conversion. In the period 2003-2013, paddy field in West Java Province has decreased by 9098 ha, while all of Indonesia increased by 235 538 ha (2014) because of the new paddy field outside Java. In the period January-September 2022 national production reached 45.43 millian ton. Conversion of paddy field into built up area, especially in Java will affect to fragmentation level of paddy field themsefves. The purpose of this research is to analyze the fragmentation of irrigated and rainfed paddy field in Cianjur Regency. Fragmentation index that used in this research are Class Area (CA), Number of Patch (NumP), Mean Patch Size (MPS), Patch Size Standard Deviation (PSSD), Mean Sharp Index (MSI). The results showed that rainfed paddy field are more fragmented than irrigated paddy field, which is indicated by greater NumP values. Clutering of districts based on irrigated and rainfed paddy fields fragmentation index, each of which produces 3 groups . The high group has an increasingly fragmented tendency that identified by the high value of area (CA) and the number of patchs (NumP), while the other parameters are less able to characterize fragmentation difference. The fragmentation of irrigated and rainfed paddy fields in northern Cianjur Regency is influenced by the land conversion while in central and southern due to sloping topography.
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