• Korean System Dynamics Review
• /
• v.7 no.1
• /
• pp.147-172
• /
• 2006

With the purpose of long-range planning toward local/regional sustainable development, it is desired to avoid unconditional industrialization and expansion and to build an eco-oriented development strategy considering site-specific characteristics of the environment. This paper thus aims at the elaboration of a system dynamics model of a locality/region so as to understand inherent dynamics of sustainable development and to assess the effectiveness of such an eco-oriented strategy. The model thus consists of several positive and negative feedback loops that accelerate or restrict local/regional economic growth within a system boundary incorporating the environment, economy, and society. The model is moreover applied to the assessment of the effectiveness of the development plan recently established in Damyang in JeollaNamdo, Korea. It is regarded in this case to be effective for population immigration and economic prosperity to give priority to restore the bamboo ecosystem and nourish a series of eco-friendly industries based on the bamboo items developed recently. It is also to be positive to sustainable development since it enables to maintain high quality of the environment from the outset of their development steps.

• Food Engineering Progress
• /
• v.31 no.4
• /
• pp.312-321
• /
• 2019

The Lao PDR is a developing country that heavily relies on rice farming. During off-season of rice farming, rural villagers produce non-timber forest products such as bamboo products. Until recently many villages have overexploited bamboo resources and supplied raw bamboo materials to foreign companies. Although the Lao government allocated harvesting quotas, most villagers keep on cutting bamboos due to no other income during the off-season. This study provides an alternative income model, bamboo handicraft, that can increase villagers' income while minimizing the use of bamboo resources. It also accesses the economic feasibility of the new income model for a mountain village, Nongboua village, where surveys were conducted on general incomes of 10 sample families who participated in the new income model voluntarily. A difference was made during the off-season when the sample families worked on cutting bamboos (previous income) or bamboo handicrafts (new income). A daily wage of $ 11.5 was used for the previous income, based on our surveys. For the new income, it was assumed that single family could produce 6 bamboo handicrafts daily with a unit price of $ 2.3, resulting in a daily income of $ 13.8. During the off-season, 8 and 14 working days in a month were assumed for the previous and new incomes based on surveys. Then the previous previous and new yearly incomes were estimated and compared using normality and paired t-tests. This study found that the new yearly income was significantly greater than the previous yearly income (p < 0.001): the former (rice farming and bamboo handicraft, $ 2,064) was 42% ($ 608) greater than the latter (rice farming and bamboo cutting, $ 1,456). These results suggested that the new income model could increase villagers' income significantly. If the bamboo handicraft model is applied for other areas with bamboo resources, it can provide an opportunity to improve the rural economies and livelihoods of developing countries.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.20 no.4
• /
• pp.55-64
• /
• 2017

In order to assess the spatial and dynamic changes in bamboo forests, this study used the national-level spatial data between 1980 and 2010 to extract spatial information of bamboo forests through GIS technology. The results showed that the distribution types were mainly expansion, normal, mixed, damage, and separation. In case of mixed bamboo forest in the Sacheon region, the expansion characteristics were: area 2.5 ha, velocity 0.08 ha/yr, and distance 1.1 m/yr. The Phyllostachys pubescens forest in the Geojae region showed the following characteristics: area 1.9 ha, velocity 0.06 ha/yr, and distance 0.9 m/yr with where along from valley to ridge. This approach could provide a valuable tool for decision-making and implementations such as the bamboo forest management plan, environmental impact assessment for a preventing the bamboo expansion, and sustainable managing the bamboo resources.

• KIEAE Journal
• /
• v.13 no.2
• /
• pp.33-38
• /
• 2013

Limited resources for construction material in the Mae-Hae region, a remote Northern Thailand, acted as an impetus to introduce a new way for constructing their dwellings. The new construction material brought new construction methodology, namely, using earth and bamboo which are indigenous materials, readily available for them to use. Using indigenous material at Mae-Hae region was most ecological and logical method for establishing sustainable dwellings both in terms of monetary and ecological reasons. Prior to the construction at Mae-Hae, Thailand, series of experimental tests on the strength of rammed earth were performed off site at our university and also brought soil samples from the actual job site at Mae-Hae for detailed soil analysis. Through the tests, integrity of the earth and characteristics of the soil were established to build a small senior citizen center as an example. This appropriate technology is expected to contribute to the sustainable construction at Mae-Hae.

• KIEAE Journal
• /
• v.13 no.4
• /
• pp.103-112
• /
• 2013

The Federal Democratic Republic of Nepal(Nepal) is one of the poorest country in the world. People in Nepal are having lots of housing problems including the lack of housing provision. Even Habitat for Humanity Nepal (HfH_Nepal) has developed various programs to diffuse ecological housing, still there are many problems due to financial and technological shortage. The purpose of this study is to verify the effects of suggestion of performance improvement for HfH_Nepal eco house with introduction of the housing situation and efforts to provide sustainable housing by HfH_Nepal in Terai plain. Ideas on CGI sheet roof with poor insulation, double panel bamboo wall and adobe brick wall which can overcome structural and waterproof flaws of the thin single panel bamboo wall. The experiment result shows that both ideas adapted to adobe brick house reduces daily temperature range 50.8% and humidity adjust effect. For the effective provision of adobe brick house, compressive strength was tested for the bricks made with locally available fiber materials. Brick with jute displayed 41.1% betterment than plain brick with closest packing condition while coconut and straw showed 25.1% and 7.9% improvement respectively. Technical and economic problems brought up during the building and experiment process were listed and countermeasures established. This kinds of building prototype houses and experiments can improve the living conditions of people in developing countries with little supplement of resources. Furthermore, consideration of locally available and affordable material can help the social and ecological sustainability in the world.