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FUNCTION OF INTERCEPTION, EVAPOTRANSPIRATION AND ROOT REINFORCEMENT OF PLANT ON SLOPE STABILIZATION Sittadewi, Euthalia Hanggari
Jurnal Sains dan Teknologi Mitigasi Bencana Vol 15, No 1 (2020): JURNAL SAINS DAN TEKNOLOGI MITIGASI BENCANA
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

The ability of plants to carry out the functions of interception, evapotranspiration and root reinforcement provides an effective and contributes to an increase in slope stability. Canopy has a role in the process of interception related to the reduction of amount the infiltrated water and the rapid fulfilment of soil moisture. Through the evapotranspiration mechanism, plants can reduce pore water pressure in the soil so that the trigger force for landslides can be reduced and the soil will be more stable. The roots mechanically strengthen the soil, through the transfer of shear stresses in the soil into tensile resistance in the roots. Roots also bind soil particles and increase surface roughness, thereby reducing the process of soil displacement or erosion. There is a positive relationship between the density of the tree canopy with the value of rainfall interception, evapotranspiration with a decrease in pore water pressure in the soil and the ability of root anchoring and binding with an increase in soil shear strength, indicating that the function of interception, evapotranspiration and strengthening of plant roots have a positive effect on increasing slope stability. Plants selection that considers the level of interception, the rate of evapotranspiration and root reinforcement by adjusting environmental and slopes conditions will determine the success of slope stabilization efforts by vegetative methods.Keywords : interception, evapotranspiration, root reinforcement, slope stabilization.

PENGOLAHAN BAHAN ORGANIK ECENG GONDOK MENJADI MEDIA TUMBUH UNTUK MENDUKUNG PERTANIAN ORGANIK Euthalia Hanggari Sittadewi
Jurnal Teknologi Lingkungan Vol. 8 No. 3 (2007): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Eceng gondok (Eichornia crassipes (Mart)(Solms) is a floating plants that creates problems on the maximum of waters utilization. On the other side, eceng gondok is a potential organic matter that can be used for a growing media. The utilization of the organic matter for growing media will support of organic farming and minimize the use of chemical materials. Process of eceng gondok decomposition can produce a growing media with high nutrients contain for plants growth. The experiments of growing media from eceng gondok for sawi hibrid plants show positive respons in which the plant has freshly growth and free of diseases.

FUNGSI STRATEGIS DANAU TONDANO, PERUBAHAN EKOSISTEM DAN MASALAH YANG TERJADI Euthalia Hanggari Sittadewi
Jurnal Teknologi Lingkungan Vol. 9 No. 1 (2008): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Tondano is a natural and biggest lake in North Sulawesi which some strategic functions i.e for irrigation, source of drinking water, hydropower, freshwater culture, tourisms, overflow control. Wide of Tondano Lake is about 46 – 51 km2. There are 35 streams as inlet and one outlet only is Tondano Stream. Tondano Lake has some problems caused by many activities both in downstream area or around of the lake. People’s activities such as land clearing for plantation in downstream area, freshwater cultureand daily people’s activities around of the lake had been organic material contribution in the lake waters. It has caused of water hyacinth booming (Eichornia crassipes (Malt) (Soms), erosion and sedimentation. Nowadays water hyacinth has been covered about 20% of Tondano Lake’s wide. Besides reduce of waters quality, water hyacinth booming has been made problems for hydropower and traffic in lake waters to the outlet. Because of that problems, Tondano Lake needs concern for intensif management.Key Words : strategic functions, ecosystem, erosion, sedimentation, water hyacinth.

KONDISI LAHAN PASANG SURUT KAWASAN RAWA PENING DAN POTENSI PEMANFAATANNYA Euthalia Hanggari Sittadewi
Jurnal Teknologi Lingkungan Vol. 9 No. 3 (2008): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

The tidal land in Rawa Pening’s region is land that has been formed as caused of up and down water level process of Rawa Pening’s lake. The wide of tidal land that can be used are fluctuated beetwen dry and rainy seasons. The main used of tidal land is for rice field. The wide of tidal land that can be used for rice field beetwen elevation + 462,30 m and +463,30 m are 812 Ha, between elevation + 462,05 m and +462,30 are 218,51 Ha. There are some species of paddy that has been cultivated in that area, are IR-64, GH barito, ciliwung, cisadane, membramo and mentik. Mean of paddy yield is about 2,5 – 5 ton/ Ha.

PERAN VEGETASI DALAM APLIKASI SOIL BIOENGINEERING Euthalia Hanggari Sittadewi
Jurnal Sains dan Teknologi Mitigasi Bencana Vol. 12 No. 2 (2017): Jurnal Sains dan Teknologi Mitigasi Bencana
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmb.v12i2.2588

Soil bioengineering merupakan salah satu teknologi yang dapat diterapkan untuk meningkatkan kestabilan lereng dan mitigasi erosi. Dalam penerapan soil bioengineering ini vegetasi mempunyai peran yang penting terutama dalam mengurangi kecepatan aliran permukaan yang bisa menghanyutkan partikel-partikel tanah yang tidak padat. Untuk aplikasi soil bioengineering, dibutuhkan vegetasi yang memenuhi kriteria antara lain cepat tumbuh, mempunyai sistem penetrasi akar yang dalam dan kemampuan mengikat tanah yang baik dan dapat hidup pada berbagai jenis tanah. ). Untuk meningkatkan stabilitas lereng, vegetasi yang digunakan tergantung dari kondisi kelerengan. Jenis akar serabut dapat membentuk jaring - jaring alami yang berfungsi memperkuat tanah sehingga tidak mudah terbawa oleh aliran air permukaan (run off). Â

FUNCTION OF INTERCEPTION, EVAPOTRANSPIRATION AND ROOT REINFORCEMENT OF PLANT ON SLOPE STABILIZATION Euthalia Hanggari Sittadewi
Jurnal Sains dan Teknologi Mitigasi Bencana Vol. 15 No. 1 (2020): Jurnal Sains dan Teknologi Mitigasi Bencana
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmb.v15i1.4116

The ability of plants to carry out the functions of interception, evapotranspiration and root reinforcement provides an effective and contributes to an increase in slope stability. Canopy has a role in the process of interception related to the reduction of amount the infiltrated water and the rapid fulfilment of soil moisture. Through the evapotranspiration mechanism, plants can reduce pore water pressure in the soil so that the trigger force for landslides can be reduced and the soil will be more stable. The roots mechanically strengthen the soil, through the transfer of shear stresses in the soil into tensile resistance in the roots. Roots also bind soil particles and increase surface roughness, thereby reducing the process of soil displacement or erosion. There is a positive relationship between the density of the tree canopy with the value of rainfall interception, evapotranspiration with a decrease in pore water pressure in the soil and the ability of root anchoring and binding with an increase in soil shear strength, indicating that the function of interception, evapotranspiration and strengthening of plant roots have a positive effect on increasing slope stability. Plants selection that considers the level of interception, the rate of evapotranspiration and root reinforcement by adjusting environmental and slopes conditions will determine the success of slope stabilization efforts by vegetative methods.Keywords : interception, evapotranspiration, root reinforcement, slope stabilization.

Characteristics of Water Storage Capacity and Water Storage Efficiency of ‘Biotextile’ Growing Medium for Erosion Resistance Utami, Dyah Nursita; Kusumastuti, Etty; Sudiana, Nana; Rahayu, Budi; Hidayat, Nur; Sulistiawan, Insan Nur; Purnomo, Agus; Atang; Sittadewi, Euthalia Hanggari
Berkala Ilmiah Biologi Vol 14 No 1 (2023)
Publisher : Fakultas Biologi Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/bib.v14i1.5891

Abstract: Biotextile is an innovation in erosion-resistant growing media technology, made from organic cocopeat supplemented with Legume Cover Crop (LCC) seeds and coated with biofertilizer. In its application, the success of biotextiles is determined, among other things, by the capacity and efficiency of water storage in the media The capacity and water storage efficiency of biotextile media will determine the success of growth in field applications. From field tests conducted on the sloping land of the Ciater reservoir cliffs, South Tangerang, it was shown that on the 4th day the LCC seeds had started to grow, on the 10th day they had grown in all biotextile cells, and at the age of 3 months the LCC plant canopy had covered almost all of the soil surface at the test field. Based on the growth test results, biotextile characterization tests have been carried out, which include measuring water content (KA), water storage capacity (KPA), and water storage efficiency (Es). Based on these test results, a biotextile characteristic test has been carried out which includes water content (KA), water storage capacity (KPA), and water storage efficiency (Es) to find out the characteristics of KPA and Es in evaluating its success and to prove the hypothesis that KPA and biotextile Es support the successful growth of land cover plants (LCC). The measurement of KA biotextile was carried out using the gravimetric method, while KPA and Es were measured using the immersion method, which was carried out in the Serpong laboratory. From the results of laboratory analysis, KA reached a range of values: 40–80%, KPA = 74.41–297.59%, and Es = 21%–75.5%. Apart from the results of plant growth and laboratory results, from a physical perspective, the performance of biotextiles can be seen in reducing the energy of rainwater blows, reducing the flow rate of surface water, and reducing soil erosion.

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