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All Journal Journal of Applied Agricultural Science and Technology Journal of Applied Agricultural Science and Technology
Reni Ekawaty
Politeknik Pertanian Negeri Payakumbuh
Agriculture, Biological Sciences & Forestry Engineering Environmental Science

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Telaahan Daya Dukung dan Daya Tampung Lingkungan Dalam Pengelolaan Kawasan Daerah Aliran Sungai di Indonesia Reni Ekawaty; Yonariza Yonariza; Eri Gas Ekaputra; Ardinis Arbain
Jurnal Ilmu dan Teknologi Terapan Pertanian Vol 2 No 2 (2018): Journal of Applied Agricultural Science and Technology
Publisher : Politeknik Pertanian Negeri Payakumbuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32530/jaast.v2i2.42

Abstract

DAS merupakan kawasan yang khas dan mempunyai fungsi yang sangat penting dalam hidrologi. Sekarang ini kawasan DAS di Indonesia telah mengalami kerusakan. Kerusakan ini telah menimbulkan berbagai bencana seperti longsor, erosi dan banjir. Hal ini umumnya disebabkan oleh terjadinya perubahan penggunaan lahan. Bencana alam serta aktivitas manusia juga telah menimbulkan pencemaran pada air sungai. Dewasa ini hampir sebagian besar sungai-sungai di Indonesia telah mengalami pencemaran, bahkan di pulau Jawa pencemaran sungai sudah dalam tahap yang mengkhawatirkan. Perubahan penggunaan lahan dan pencemaran sungai telah melampaui daya dukung dan daya tampung lingkungan. Penyebab dari kerusakan ini antara lain disebabkan oleh pertambahan penduduk, kelembagaan, kemiskinan, pemenuhan kebutuhan hidup masyarakat seperti sandang, pangan dan pemukiman, perkebunan, pertambangan dan partisipasi masyarakat yang sangat rendah dalam melakukan konservasi. Beberapa cara penanggulangan telah dilakukan mulai dari konservasi secara teknis yaitu teras dan guludan, agroforestri, pelibatan masyarakat serta harmonisasi kelembagaan. Namun masih terjadi kerusakan di dalam DAS. Perlu dikaji lebih lanjut akar permasalahan yang sebenarnya sehingga bisa dicari penanggulangan yang tepat.
Relationship of Tree Architecture on Canopy Throughfall and Stem Flow in The Upstream of Batang Mahat River Basin Lima Puluh Kota Regency Indonesia Reni Ekawaty; Yonariza Yonariza; Eri Gas Ekaputra; Ardinis Arbain; Rusnam Rusnam
Journal of Applied Agricultural Science and Technology Vol. 7 No. 1 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i1.85

Abstract

A study about the effect of tree architecture on canopy throughfall and stem flow was conducted upstream of Batang Mahat River Basin, Lima Puluh Kota Regency, West Sumatra, Indonesia. Four dominant tree species in the location, Voacanga foetida, Guioa sp, Schima wallichii and Rhodoleia champonii, were selected and represented in architecture by Scarrone, Schoute, Rauh and Leeuwenberg, respectively. Furthermore, the sample was three trees of each species. The throughfall canopy was measured using a 1 x 1 m plastic plot placed at the edge, while the stem flow was calculated by two meters plastic tube with a five-litre tank at the bottom. These data were collected eight times over one month. The study aimed to the analyzed relationship between tree architecture and canopy throughfall and stem flow upstream of the Batang Mahat River Basin. The result showed that Schima wallichii differed significantly in throughfall canopy relative to the other three species. Additionally, V. foetida significantly differed in stem flow compared to the other tree species. There was no correlation between throughfall canopy, stem flow and precipitation, but the two parameters were affected by three architectures. These findings are useful for soil and water conservation in the upper Mahat River Basin.
Co-Authors Ardinis Arbain Ekaputra, Eri Gas Rusnam Rusnam Yonariza Yonariza