Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
asahiro Kazuo Last modified date:2021.04.12

Associate Professor / Division of Landscape and Social Environmental Design / Department of Environmental Design / Faculty of Design

1. S M Asik Ullah, Kazuo Asahiro, Masao Moriyama, Masakazu Tani, Socioeconomic Status Changes of the Host Communities after the Rohingya Refugee Influx in the Southern Coastal Area of Bangladesh, Sustainability, 13, 8, Sustainability 2021, 13(8), 4240, 2021.04.
2. The purpose of this study was to study the difference in growth between planted Cerasus jamasakura and Quercus serrata in the eleven plots where had 15m square the group selection openings of Cryptomeria japonica and Chamaecyparis obtusa, established by nonprofit organization from 2007 to2010 in Kuroki Town, Yame City, Fukuoka Prefecture. For post-planting management, it was decided that underbrush would be cut only around the planted trees in order to increase biodiversity and competition among different species. Tree height measurement and vegetation surveys were conducted from 2007 to 2018. As a result, it was confirmed that the planted Cerasus jamasakura could grow to 857~1,017 cm in 11 years through interspecific competition with the pioneer species. The average annual tree height growth was 64 cm. On the other hand, it was confirmed that the growth of Quercus serrata was significantly inhibited by the shade of the surrounding artificial forest of Cryptomeria japonica, Chamaecyparis obtusa and other plants in the study area. The height of the trees was only 276~417 cm in the 10th and 11th year at the upper site of the study area. It was concluded that the growth of Quercus serrata was unsuitable under these conditions., [URL].
3. Mariym Sultana Marry, Kazuo Asahiro, SM Asik Ullah, Masao Moriyama, Masakazu Tani, Maiko Sakamoto, Assessing Local People’s Preferences for Landscape Character in Teknaf Peninsula for Sustainable Landscape Conservation and Development, International Review for Spatial Planning and Sustainable Development,, 6, 2, 50-63, 2018.04, [URL], Abstract
Sustainable development requires better understanding of the human-landscape relationship in forested landscapes, one that facilitates more locally relevant and sustainable management. It can be more easily understood by the process of landscape characterisation and humans’ valuation. Therefore, this study assesses local people’s preferences and perceptions about the physical landscape, which is crucial for managing landscape and livelihood. The study investigates the diversification of landscape character types and landscape character areas (LCA), local people’s perceptions about and preferences for different LCAs, and how and why they prefer some LCAs to others. An LCA is a distinct type of landscape that is relatively homogenous in character. Two different villages located in Teknaf peninsula, Bangladesh, are examined where the villages were selected by calculating vegetation cover within a buffer of 1 kilometre. Landform and vegetation data were collected as physical characteristics of the landscape to identify the LCA, and data for local people’s perception and preferences were collected through focus group discussions and questionnaire surveys by selecting 10% of the households of each village in March 2016. The findings show that in Kerantali the diversification of landscape character types was more than in Tulatali. Homestead garden areas are highly preferred in Tulatali and forest is highly preferred in Kerantali. Kerantali's people receive poor material benefit from forest areas, whereas Tulatoli's people receive more material benefit from homestead garden areas. Furthermore, our findings indicate that homestead gardens play an important role as a supplement to forests..
4. This research aims to make clear the farmland restoration volunteer attribution and consciousness, and the volunteer experiences before-after of this disaster of the Torrential Rainfall in Northern Kyushu in July 2012. The questioner research was carried out to NPO Sansonjyuku’s volunteer, 897 persons by post mail, and three private company by web mail from Nov. 27th 2014 to Jan. 31th 2015. As a result, post mail recovery rate was 30.2%. Most high portion of volunteer occupation etc. were the private company worker, 40’s and Fukuoka city urban peoples. Volunteer recruiting was carried out by people who have experience with NPO Sansonjyuku before disaster. The volunteers worked 2.97day per person during one year and eight months as average, and the repeat rate was 49.0 %. In terms of volunteer experiences of before disaster, 33.7% volunteers had the disaster volunteer experience, and 76.1% volunteer had experience that had been visited to this region. As for NPO Sansonjyuku volunteer seems around ten percent both before and after of disaster. Thus, this research confirmed that the importance of activities in farm village from before the disaster, not only the conservation volunteer but tourism so on..
5. Md. Abiar Rahman, Masakazu Tani, Asahiro Kazuo, S. M. Asik Ullah, Species Composition, Diversity and Productivity of Homesteads in Southeastern Bangladesh, Small-scale Forestry, 10.1007/s11842-016-9356-8, 2016.10, [URL], A homestead is an integrated production system where trees, crops, livestock and poultry are found in and around the household residence in Bangladesh. It is a potential production unit that provides various product, service and ecological functions. Almost all people in Bangladesh including landless households have homesteads in which they grow trees and crops even in a small piece of land. This study characterizes the species composition, diversity and productivity of the homestead production system in the Teknaf peninsula, southeastern Bangladesh. Survey data collection was from a total of 180 homesteads covering five household categories: large, medium, small, marginal and landless. Vegetable, fruit, timber, and livestock and poultry were common components in the homestead production system. Various types of plants were mainly concentrated in back yards, front yards, boundaries and corners of homesteads. The mean number of tree species per homestead was about 15. In total, 189 tree and shrub species were recorded, and were distinctly high and low in the large (363.7) and landless (55.7) household categories. Species composition, diversity and productivity of homesteads were found to be related to household categories. Richness and diversity of tree and shrub species increased with household size. Betel nut was the dominant tree species followed by mango, jackfruit and coconut. Annual income from homesteads also varied among the household categories, with a mean contribution of the homestead to annual income of about 25 %. A large portion of homestead income came from betel nut trees. There is scope to increase species diversity and income by designing homesteads with the engagement of women and other family members..
6. K. K. Islam, Masakazu Tani, Asahiro Kazuo, M. Zulfikar Rahman, Kimihiko Hyakumura, TAKAHIRO FUJIWARA, Noriko SATO, Analysis of Power Dynamics and Livelihood Assets in Participatory Forest Management: Experience from Bangladesh, International Journal of Natural Resource Ecology and Management, 10.11648/j.ijnrem.20160103.14, 1, 3, 88-98, 2016.08, Participatory forestry (PF) plays a significant role to involve local communities and different actors in resources
management and livelihood improvements. However, the power of important actors to misuse the PF for their self-interest has
been stated as a key obstacle to success. Hence, this study seeks to identify the most powerful actors and the extent to which they
affect PF decision- making and also to measure and evaluate the livelihood assets of participants. Empirical data were collected
from Madhupur and Teknaf PF sites of Bangladesh during the different time intervals. The actors’ power analysis found out that
the forest administration evidenced itself as the most powerful and influential actors in PF. In the case of livelihood analysis, the
overall results indicated that the total value of PF members’ livelihood assets were 0.82 and 0.75 for Madhupur and Teknaf study
sites. Livelihood asset conditions were significantly different between the PF members’ and non-members’ (0.65 and 0.62 for
non-members’). However, the development of social and financial assets did not reveal a notable increase considering natural,
physical and human assets. Therefore, it is very important to pay more attention to accelerate social and financial assets through
intensive training, establishing conflicts resolution mechanism and adopting proper tree-crop technologies, and also provide
alternative livelihood approaches to the forest dependent people. In addition, there is an immediate need to empower local PF
members, by which the general members play the central role in decision making and governing all of their development
7. Asahiro Kazuo, Masakazu Tani, Hiroyuki Kanekiyo, Support for Farmland Restoration Through Mutual Assistance After Flood Disasters in Hilly and Mountainous Areas -Cases of the Cities of Yame and Ukiha Affected by the Torrential Rainfall in Northern Kyushu in July 2012-, 5, 10, 794-805, 2015.10, [URL], A considerable amount of farmland was destroyed by a flood disaster that struck in 2012 in Yame and Ukiha,in Fukuoka prefecture in the northern part of the island of Kyushu,Japan. This paper is a case study of the volunteer farmland restoration activities that were carried out in the hilly and mountainous areas after the flood. The purpose of this study is to outline the activities in three regions and to show the character of the volunteer farmland restoration groups. Interview surveys were conducted with the manager of each volunteer group, and data on the process of forming volunteer groups, the monthly process and distribution of activities, facilities requirements,and intermediaries between affected farmers and volunteer activities were collected in field surveys. The surveys were carried out from June to September, 2014. It was found that conservation activities were carried out in the three regions starting the year before the disaster. It is notable that Sansonjyuku, a NPO established in 1994, launched their activities in July,the month in which disaster struck. Activity areas by Sansonjyuku were unevenly distributed due to their experiences with volunteer activities in previous years. The other groups widely covered their areas because they carried out needs research on all local districts through ward mayors. Fifty percent to 75.9% support activities were intermediated by someone,and the ward mayors fulfilled this role more than 50% of the time..
8. Many farmlands were destroyed by big flood disaster in 2012 that was occurred in Yame and Ukiha city, Fukuoka prefecture at northern Kyushu, Japan. In this paper, I described the case study that has been deployed the volunteer activities for farmland restoration after the flood disaster in the hilly and mountainous areas. The purpose of this study is to clarify the outline of the activities in three regions and to show the types of the volunteer groups of farmland restoration. Interview survey was conducted with each volunteer group’s manager and collecting that materials. Field survey was also carried out along with the manager through June to September 2014. It was found that the volunteer group’s activity types were characterized into three types. First, “Satochi-Satoyama conservation volunteer group type” that has been works from before and just after the disaster; second, “Residents-administration group type” and third, “Administration group type” who started their works few months after the disaster. Lastly, the distribution of activity areas, the first group was unevenly distributed due to their activity experiences on disasters in former years, the other groups were widely covered the area because of the needs by the local demand..
9. Md. Abiar Rahman, Masakazu Tani, Asahiro Kazuo, Hiroshi Tsuruta, SM Asik Ullah, Problems and Prospects of Betel Leaf Cultivation in the Teknaf Peninsula of Bangladesh
, International Journal of Environment, 5, 1, 14-19, 2015.02, Betel leaf (Piper betel) is widely cultivated as cash crop in the Teknaf peninsula of Bangladesh. Farmers are facing numerous problems in cultivating betel leaf as they do not have much knowledge. A survey was conducted to know the problems and prospects of betel leaf cultivation in the Teknaf peninsula. A total 50 betel leaf farmers were interviewed to collect data. It was found that 64% farmers were cultivating betel leaf in and around the forest area. A large number of farmers (78%) provided primary shade just after planting the cuttings, while cent percent farmers imposed permanent shade. Most of the farmers (70%) opined drought as the major problem in betel leaf cultivation followed by lack of technology and management, disease and insect infestations, insufficient inputs, and labor. Collection of shading materials from forest area for constructing boroj is creating extra pressure on forest resources, which is responsible for degrading the ecosystem and biodiversity. However, farmers were interested in betel leaf cultivation due to high return and availability of shading materials. Some farmers cultivated inter-crops that helped them for consumption and high income. Family members of household were engaged in various activities in betel leaf cultivation. Alternate income generation, shading materials, developing eco-friendly farming, plantation program and community awareness program would be helpful to conserve ecosystem..
10. This research focused on the hilly and mountainous area of Yame City, Fukuoka Prefecture, which suffered damage due to the heavy rains that occurred in the northern part of Kyushu in July 2012. The objective of this research was to identify the distribution of damage to agricultural land in the Yame City area and the districts in which it was concentrated. In addition to characterizing the damage, the research was aimed at revealing the activities of aid agencies. To conduct this research, the carried out questionnaire survey by Yame City, the disaster report on the agricultural land and facilities was analyzed, and interviews were conducted to an NPO, and the leaders of the local. The results of our research led to the following conclusions: (1) Following a comparison of the reported disaster densities in the managed cultivated areas, it was ascertained that the damage was concentrated in Jouyo Town, Hoshino Village, and Kurogi Town, with totals ranging from 170.5 to 299.7 incidents/km2, and particularly in the Kasahara District of Kurogi Town, with a total of 1503.1 incidents/km2. (2) The damage to roads in the semi-mountainous regions and it was shown that this situation exacerbated the difficulties of the recovery. (3) It was reinforced that the presence of an NPO with a base in the disaster area meant that the initial support for the recovery was highly effective..
11. In recent years, practical use of systems that is concerned with green conservation and civil activities is getting necessary. The purpose of study was to clarify application situation of both systems and the present circumstances of citizen s' activities of the green conservation in each green space based on both systems, additionally, to investigate problems of those activities and operational realities of systems based on those purpose and detail. To this end, we conducted a questionnaire survey of 90 municipalities that specifies green conservation area or civic green spaces. In that questionnaire, we understood the current situation, challenges, the direction of green conservation activities by citizens. As a result, citizens activities are being carried out in the green area of about 20% in the green conservation area and about 40% in civic green spaces. In this study, we focus on municipalities specify many area and confirm activities of the green conservation, moreover, their own systems relat ed to each green area and activities, and consider those cases..
12. Agricultural Production and Consumption Activity of Pre-marginal Hamlets of Rural Area in Northern Part of Aragón, Spain.
13. This is a report of the “Student Workshop for Recon-struction Assistance to the Tohoku-Pacific Ocean Earthquake.” The disaster occurred on March 11, 2011, and the reconstruction support activities were con-ducted by the executive committee of the Japanese Institute of Landscape Architecture in Minamisanriku-cho, Miyagi prefecture, from September 4, 2011 to May 2, 2012. The activities consisted of three phases—phase 1: on-site workshop, phase 2: polishing of the student’s proposal and presentation of a report at the academic conference, and phase 3: reporting of activities to the local residents. The following four results were drawn from these educational activities: (1) perspective of landscape design, (2) activities were carried out six months time after the earthquake occurred, (3) education as an opportunity for college students, (4) collaboration with local stakeholders, universities, and companies. On the other hand, several issues were noted for future activities of educational institution in disaster affected local areas: (1) safety measures to reduce disaster risk at the site, (2) making a sincere relationship with the local people, (3) fund-raising. In conclusion, work in disaster areas is crucial and further contribution from our design education should be enhanced..
14. 重松 敏則, 志村 聖子, 朝廣 和夫, 志賀 壮史, Developing Volunteer Tourism through Encouraging Satoyama Conservation Activities, The 13th International Symposium of Landscape Architecture,Korea, China, and Japan, 103-107, 2012.09, Although Satoyama were historically managed jointly with Japanese cultural landscape and bio-diversity, after the fuel revolution, Satoyama were abandoned, urbanized in city fringes, and remained ones deteriorated to dark and dense woods by natural succession. The opposition movements by citizens against the destructive developments in 1970s progressed to volunteer conservation management activities in 1990s. As a result of ecological experimental research since 1994, we launched the international conservation working holidays cooperatively with BTCV (British Trust for Conservation Volunteers). It is expected that further conservation activities regarding volunteer tourism are developed, considering how to involve local people and volunteers, and how to train leaders who also work as coordinators or facilitators. To realize the purpose, we introduce practical approaches that cooperate with music activities, rural foresting/farming activities and leader training courses. In conclusion, we discuss interactive relationship between eco-tourism, environmental education and volunteer action, and point out the importance of Satoyama conservation activities which promote volunteer movements to play comprehensive roles on experiential education on both natural and social, human resources training, and interact with welfare and unemployment problems. Also it is necessary to make up the reinforcement system which support the conservation volunteer organizations financially and materially for further development..
15. Kazuo Asahiro, BTCV Standards Leader Training Program for Environmental Conservation Volunteers in Japan, Journal of Landscape Architecture in Asia Volume5, October 2010, Japanese Institute of Landscape Architecture, Chinese Society of Landscape Architecture, Korean Institute of Landscape Architecture., 5, 118-123, 2010.10.
16.   The Analysis of Forest Crowns by Same-Color-Region Determining Method Utilized Image Range Features of Castanopsis cuspidata Coppice Woodland and Cryptomeria japonica and Chamaecyparis obtusa Artificial Forest
17. The Aerial Photograph Image Character and Forest Structural Factors Relationship of Castanopsis cuspidata Coppice Woodland and Chamaechiparis obutusa Artificial Forest..
18. Kazuo Asahiro, Toshinori Shigematsu, International Conservation Working Holidays in Fukuoka, Japan and Strategy of BTCV in United Kingdom, Japanese Institute of Landscape Architecture, Chinese Society of Landscape Architecture, Korean Institute of Landscape Architecture, Journal of Landscape Architecture in Asia Volume 2 (2巻、p109-114), 2006.08.
19. The Relationship between Satoyama Forest’ Status and its Social Functions in a Suburban Area of Fukuoka, Kyushu, Journal of the Institute of Landscape Architecture.
20. Regenerative Staging and Structure of the Over Matured Satoyama‐forest in Suburban Kitakyushu City of Southwestern Japan, Journal of the Institute of Landscape Architecture.
21. The Analysis of Forest Crown by Determining Same Color Regions in Aerial Photograph Images of a Northern Kyushu Satoyama Rural Forest, Journal of the Institute of Landscape Architecture.
22. Identifying Typical Satoyama Coppice Trees by Analyzing Seasonal Color Change on Aerial Photographs.
23. Classification of Tree Species in Satoyma Coppice Forests Based on Change in Color Tone of Time-series Color Images.
24. Spring Tonal Change in Evergreen Broadleaf Trees Representative of Satoyama Coppice Forest as Observed through Aerial Time-series Color Photographic Data.
25. Change in the Color Tone of Representative Evergreen Broad−Leaved Trees in Satoyama Coppice Forests Based on Time Series Color Photographs collected in a Year.
26. Basic Studies on Dynamic Vegetation Analysis Used of Aerial Photograph.
27. A basic Study on Reforestation by Log Cuttings Gathered from Coppice Woodland.
28. A Case Study of the Cost Evaluation of Citizen's Voluntary Work for the Conservation of Rural Woodlands and Terraced Paddy Fields.
29. Growth of Quercus acutissima and Q. serata Seedlings in the Red Pine Forest Floor under Different Thinning Intensity.
30. Transitions of Agricultural Land-use and Landscape in Rural Communities.
31. Characteriation of Imazu Tidal-flat from the View Point of Physical and Chemical Properties of Mud and Benthos Distribution.
32. Basic Studies on a Dynamic Vegetation Mapping System and its Utilization as a Tool for Rural Country Land Conservation..