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Studi Ekologi Lahan Koridor Sungai dan Status Kualitas Penggunaan Lahan di Wilayah Das Rawapening Hasmana Soewandita
Jurnal ALAMI : Jurnal Teknologi Reduksi Risiko Bencana Vol. 1 No. 1 (2017): Jurnal Alami
Publisher : Agency for the Assessment and Application of Technology / Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/alami.v1i1.960

Abstract

Rawapening merupakan salah satu danau yang keberadaannya mempunyai peranan sangat penting bagi kehidupan masyarakat sekitarnya bahkan dikawasan sebelah hilirnya.  Kualitas ekologi perairan Rawapening dari tahun ke tahun terus menurun, baik daya tampungnya maupun kondisi kualitas airnya.  Peranan sungai sungai  dengan kondisi daerah tangkapannya turut menentukan keberadaan kualitas lingkungan ekologis Rawapening.  Tujuan dari studi ini adalah untuk mengetahui kondisi ekologi lahan koridor sungai sungai yang masuk Rawapening terkait isu penurunan kualitas ekologi Rawapening. Tata guna lahan di sekitar koridor sungai ternyata merepresentasikan kondisi tataguna lahan DAS Rawapening yaitu dari hutan, kebun campuran, semak belukar, sawah irigasi dan sawah tadah hujan.  Kondisi kualitas fisik kimia tanah juga sangat bervariasi namun secara umum mempunyai tingkat kesuburan yang baik.  Akan tetapi hasil studi menunjukkan terjadi penurunan degradasi lahan terkait perubahan tataguna lahan terutama perubahan penurunan luas kebun campuran dan berubah menjadi pola penggunaan permukiman dari 12431 Ha pada tahun 2003 menjadi 10625 Ha pada tahun 2010.  Regim tampungan air danu Rawapening yang ekstrim antara pada musim penghujan dan kemarau juga disebabkan oleh kondisi kualitas koridor sungai yang sudah terdegrdasi terutama perubahan pola penggunaan lahan dari daerah pengalirannya.
Analisis Kawasan Rawan Longsor dan Keterkaitannya terhadap Kualitas Tanah dan Penggunaan Lahan (Kasus di Kawasan Agribisnis Juhut Kabupaten Pandeglang) Hasmana Soewandita
Jurnal ALAMI : Jurnal Teknologi Reduksi Risiko Bencana Vol. 2 No. 1 (2018): Jurnal Alami
Publisher : Agency for the Assessment and Application of Technology / Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/alami.v2i1.2826

Abstract

AbstractJuhut region based on the government policy of Banten Province in 2015 is an area that will be developed as a center of agribusiness development area. Its existence is located on the slopes of the hills and at the same time as a residential area allegedly as an area prone to landslides. Agriculture cultivation activities related to soil fertility conditions that are on the belt of the volcano, making this area attracts the community to conduct agricultural cultivation activities despite being on a slope land. The aims of this study are the biophysical analysis of landslide hazard areas and their relationship to soil quality and land use patterns.The method used in this study is observation and groundceck of field biophysical condition and overlay analysis of thematic map related to landslide prone condition. The results of the study indicate that the biophysical condition of the land indicates that the landslide prone areas are susceptible to 707.1 Ha (70%), while the high vulnerability area reaches 245.3 Ha (24%). Soil fertility causes attractive soil to be managed by the community for the cultivation of seasonal crops or horticultural crops that can further trigger a landslide. This is also because the soil type conditions also have physical properties that are vulnerable to the early behavior of seasonal changes (from dry season to rainy season).  Land use that is not suitability with morphological conditions of land and already managed by the community as an economic source will be a threat of high vulnerability to landslide hazards.Keywords :  agribisnis area, land slides hazard, soil biophysical, land quality
Model Implementasi Bioenginering Sebagai Upaya Mitigasi Longsor : (Kajian di Lokasi Rawan Longsor Desa Jatiradio Kecamatan Cililin Kabupaten Bandung Barat) Hasmana Soewandita
Jurnal ALAMI : Jurnal Teknologi Reduksi Risiko Bencana Vol. 4 No. 2 (2020): Jurnal Alami
Publisher : Agency for the Assessment and Application of Technology / Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/alami.v4i2.4497

Abstract

Landslide is one of the high frequency disasters that occur in Indonesia. The incident recurs every year with a different location. The fact that landslide hazards are used intensively for agricultural cultivation due to economic considerations. One of the efforts to mitigate this disaster is the Bioenginering implementation approach. Bioenginering activity is the application of landslide hazard area management by managing plants / vegetation. The purpose of this research is to implement a vegetative technology implementation model as an effort to mitigate landslides. Bioenginering implementation is designed with a combination of ecological and socio-economic approaches. The results of this combination are consulted with the affected community and consider various vegetation alternatives. The selected vegetation not only has an ecological function but also an economic function. With these considerations, a vegetation design is obtained with a combination of upper strata (trees), middle and lower strata. For the upper strata it is recommended to plant Petai (Parkia speciosa) and Durian (Durio zibenthinus), for the middle strata, namely Coffee (Coffea arabica) and lower strata plants are pineapple (Ananas commocus). The combination of plants such as the implementation at the field level will be accepted by the farming community, because every certain period of time the farmers will be able to harvest their crops without having to remove the plants or cut down the plants. Maintaining the level of land cover and land use has implications for maintaining the stability of soil moisture conditions which in turn can reduce the threat of landslides in landslide hazard areas.