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Landfill development in the urban fringe of Metro Manila |
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| Authors: | Yuji Hara Kazuhiko Takeuchi Armando M Palijon Akinobu Murakami |
| Institution: | 1. Transdisciplinary Initiative for Global Sustainability (TIGS), Integrated Research System for Sustainability Science (IR3S), The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8654, Japan 2. Laboratory of Landscape Ecology and Planning, Department of Ecosystem Studies, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo, 113-8657, Japan 3. College of Forestry and Natural Resources, University of the Philippines Los Ba?os, College, Laguna, 4031, Philippines 4. Department of Social Systems and Management, Graduate School of Systems and Information Engineering, University of Tsukuba, Tennodai 1-1-1, Tsukuba Science City, Ibaraki, 305-8573, Japan |
| Abstract: | In low-lying areas of urban and suburban regions in Asia, the use of landfill has allowed urban land use to encroach onto watery landforms, such as back marshes, which were formerly used as rice fields. To improve understanding of the associations between land-use patterns and landfill development, we carried out a case study in the urban fringe of Metro Manila in the Philippines. We examined landfill volume derived from land-use change using GIS, and field surveyed qualitative aspects of the landfill used. We calculated the rate of application of landfill in low-lying housing development areas to be 5.0 × 103 m3 km?2 year?1, most of which consisted of offsite disposal of construction waste or crushed rock produced by urban development and renewal on the adjoining uplands. The flow of fill material from offsite sources to onsite landfill development areas was on the basis of individual agreements between suppliers and developers. |
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