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"Lahan kering merupakan sumberdaya pertanian terbesar ditinjau dari segi luasnya. Profil usaha tani pada agroekosistem ini sebagian masih diwarnai oleh rendahnya produktifitas lahan. Daerah Aliran (DA) Ci Sokan merupakan salah satu dari Sub DA Ci Tarum yang memiliki sebaran pertanian lahan kering cukup luas yang dikhawatirkan berdampak pada besarnya erosi dan berakhir pada pembentukan lahan kritis.Penelitian ini bertujuan untuk mengkaji dan menilai persebaran spasial perubahan pertanian lahan kering di DA Ci Sokan yang diduga sebagai salah satu kontributor yang menyebabkan gangguan fisik tanah dan degradasi lahan oleh erosi.Hasil penelitian menunjukan bahwa pertanian lahan kering di DA Ci Sokan sejak tahun 1990 sampai 2010 semakin bertambah. Secara spasial peningkatan luas pertanian lahan kering terjadi pada daerah yang memiliki ketinggian antara 700-1000 mdpl dan kelas lereng agak curam (15-25%) dan curam (25-40%). Dengan pemodelan spasial menggunakan metode Artificial Neural Network (ANN) dan Markov Chain diprediksi terdapat penambahan luas pertanian lahan kering pada tahun 2030 sebesar 16,5% dari tahun 2015. Dari penelitian ini pula diketahui bahwa Tingkat Bahaya Erosi (TBE) kelas sedang sampai dengan sangat berat semakin bertambah seiring dengan meningkatnya jumlah pertanian lahan kering di DA Ci Sokan.

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Dryland farming should contribute significant amount of agricultural product, based on its extent area. However, some of this agro-ecosystems practice has low productivities. Ci Sokan watershed is one of the sub-watersheds of Ci Tarum River, which has vast area of dryland farming, and has been considered affects the amount of erosion and causes degraded land.

This research aims to study the spatial distribution of the change of dryland farming area in Ci Sokan watershed, which is supposed to contribute to soil physical disturbance and land degradation caused by erosion.

The results show that from 1990 to 2010, the area of dryland farming in Ci Sokan watershed increased. The model predicted that the conversion will mostly occurred in the area with the height of 700-1000 m above sea level and intermediate to steep slope (15-25% and 25-40%). Using spatial modelling with Artificial Neural Network (ANN) and Markov Chain method, the predicted show that dryland farming area will increase 16.5% by 2030, compare to the area in 2015. The results also show that the research area is in the intermediate to highly risk of Erosion Hazard Level, which is related to the increasing of shifting land use into dryland farming."

"Ekosistem DAS terdiri atas komponen bio-fisik yang dapat terganggu akibat erosi. Prediksi erosi tanah dalam penelitian dilakukan di pertanian tanah kering DA Ci Kapundung menggunakan model USLE. Parameter yang digunakan antara lain erosivitas (R), erodibilitas (K), panjang lereng (LS) dan pengelolaan jenis tanaman (C) dan teknik konservasi (P). Dalam penelitian ini, pengelolaan jenis tanaman (C) dan teknik konservasi (P) diinformasikan secara spesifik melalui pengolahan citra quickbird dan survey lapang berbasis raster. Hasil penelitian menunjukkan erosi sangat berat terjadi di bagian hulu dengan pola mengelompok dan di bagian tengah dengan pola memanjang. Sementara erosi ringan ataupun normal umumnya tersebar di bagian hulu DAS.

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Due to erosion, watershed ecosystem that consists of bio-physical components can be disrupted. Soil erosion prediction in this research conducted on dryland agricultural in Ci Kapundung watershed using USLE (Universal Soil Loss Estimate) model. The parameters used include erosivity (R), erodibility (K), slope length (LS), crop management (C) and conservation techniques (P). In this research, crop management (C) and conservation techniques (P) are informed specificly based on raster using quickbird?s image which verified with field survey. Based on the research known to occur very severe erosion. Its spread quite widely on the upper watershed with clumped patterns and in the middle with elongated pattern. Meanwhile, normal or mild erosion generally spread on the upper watershed."

"ABSTRAKThe goal of the study is to review changes in dryland farming culture of atoni pah meto in North Center Timor District caused by global climate changes. The research method used was qualitative descriptive: the data collecting method used was interviews, observations, and the document study. Research results prove that the atoni pah meto which consists of eighteen farming rituals, five work patterns, work division between genders, and work ethos, has shifted. It is caused by the interaction of atoni pah meto with other nations, tribes, and ethnic groups, further affected by global climate changes.Climate changes have made a great impact on farmer?s existence and culture. Because of that, the atoni pah meto of NCT District must open up more by accepting changes in the form of program intervention from the governmental and private institutions. It is time to leave shifting cultivation and slash and burn culture, and move to nature friendly farming technologies. Sickle culture will be offered here to replace slash and burn culture, supported by technologies, a more efficient work pattern and work division, and high work ethos, and it is expected that dryland farming of atoni pah meto will persevere."

"Tulisan ini membahas tentang perkembangan tegalan di daerah alairan Cikawung, kabupaten Cilacap Provinsi Jawa Tengah. Menggunakan data dasar peta topografi keluaran tahun 1940 citra Landsat tahun 1994 dan peta penggunaan lahan tegalan. Hasil analisis memperlihatkan bahwa selama kurun waktu tahun 1940-1999 telah terjadi perubahan lahan, khususnya konversi lahan hutan dan kebun/perkebunan menjadi tegalan secara signifikan. Dalam kurun waktu tersebut terjadi rata-rata penambahan luas tegalan sebesar 104 hektar per tahun. Secara spasial pertambahan luas tegalan berkorelasi positif dengan pertambahan jumlah petani dan perubahan kerapatan jaringan jalan. Berkembangnya lahan tegalan di daerah studi pada wilayah perbukitan dan pegunungan dengan lereng lebih dari 25 persen, diduga menjadi penyebab tingginya muatan sedimen aliran Cikawung selanjutnya bermuara di Citandui dan akhirnya mengendap di laguna Segara Anakan."