研究者詳細 - 一ノ瀬　友博

論文 - 一ノ瀬　友博

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日本における多文化共生コミュニティガーデンの地域的展開と役割

周天朔, 一ノ瀬友博

都市計画報告集（公益社団法人日本都市計画学会） 23 （ 2 ） 152 2024年09月

本研究は、日本における多文化共生ガーデン（IG）の現状と役割を明らかにし、増加する外国人住民の中で多文化共生を促進する上での重要性を示すものである。本研究の目的は、日本におけるIGの持続可能な未来に向けた今後の議論と行動の基盤を提供することである。愛知県の刈谷市、知立市、豊田市、および神戸市長田区において、特に外国人労働者が多い地域を対象に、IG事例を調査した。その結果、IGが地域の多様性と異文化理解を促進する役割を果たしていることが示された。地域の組織との連携、資源リサイクルの取り組み、および異文化交流の機会が、これらのコミュニティスペースの持続可能性と発展を確保するために重要であると考えられる。

Utilizing a top predator to prioritize site protection for biodiversity conservation

Natsukawa H., Yuasa H., Sutton L.J., Amano H., Haga M., Itaya H., Kawashima H., Komuro S., Konno T., Mori K., Onagi M., Ichinose T., Sergio F.

Journal of Environmental Management 347 2023年12月

ISSN 03014797

Ongoing global change makes it ever more urgent to find creative solutions for biodiversity preservation, but prioritizing sites for protection can be challenging. One shortcut lies in mapping the habitat requirements of well-established biodiversity indicators, such as top predators, to identify high-biodiversity sites. Here, we planned site protection for biodiversity conservation by developing a multi-scale species distribution model (SDM) for the raptorial Northern Goshawk (Accipiter gentilis; goshawk) breeding in an extensive megacity region of Japan. Specifically, we: (1) examined the determinants of top predator occurrence and thus of high-biodiversity value in this megacity setting, (2) identified the biodiversity hotspots, (3) validated whether they actually held higher biodiversity through an independent dataset, and (4) evaluated their current protection by environmental laws. The SDM revealed that goshawks preferred secluded sites far from roads, with abundant forest within a 100 m radius and extensive forest ecotones suitable for hunting within a 900 m radius. This multi-scale landscape configuration was independently confirmed to hold higher biodiversity, yet covered only 3.2% of the study area, with only 44.0% of these sites legally protected. Thus, a rapid biodiversity assessment mediated by a top predator quickly highlighted: (1) the poor development of biodiversity-friendly urban planning in this megacity complex, an aspect overlooked for decades of rapid urban sprawl, and (2) the extreme urgency of extending legal protection to the sites missed by the current protected area network. Exigent biodiversity indicators, such as top predators, could be employed in the early or late stages of anthropogenic impacts in order to proactively incorporate biodiversity protection into planning or flag key biodiversity relics. Our results confirm and validate the applied reliability of top predatory species as biodiversity conservation tools.

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Breeding Habitat Selection of the Daurian Redstart Phoenicurus auroreus at the Nest and Territory Scale

Ishii H., Yamaji M., Natsukawa H., Ichinose T.

Ornithological Science （日本鳥学会） 21 （ 2 ） 227 - 234 2022年07月

ISSN 13470558

The Daurian Redstart Phoenicurus auroreus has expanded its breeding distribution in recent years and now breeds in Japan, previously only part of its wintering range. We analyzed the breeding habitat selection of the population at the nest and territory scale in the Kirigamine Highlands, Nagano, Central Japan. At the nesting scale, the birds chose buildings frequently occupied by humans, while at the territory scale, they avoided sites in larger built-up areas. Our findings demonstrate that the breeding habitat selection of Daurian Redstart is influenced by environmental factors at both nest and territory scales.

健康のための歩行から持続可能な都市の構築へ

一ノ瀬友博

IATSS Review（国際交通安全学会誌）（公益財団法人国際交通安全学会） 47 （ 1 ） 22 - 32 2022年06月

ISSN 03861104

自動車優先の都市から歩行者中心の都市への転換は、世界で進みつつある。2000年代前半にウォーカブル指標が提案され、都市の歩きやすさについて数々の検討がなされてきた。歩くことが人間の健康にさまざまな効果をもたらすことは、多くの研究によって証明されている。ますます深刻になる地球環境問題、そして、2019年末からの新型コロナウイルス感染症拡大は、この都市の転換を一気に押し進め、15分都市など、ヒューマンスケールの持続可能な都市の構築に向かっている。本稿では、歩行という視点で1990年代終わりから現在まで、どのような議論が世界で繰り広げられてきたか概観する。

Unmanned aerial vehicles as a useful tool for investigating animal movements

Iwamoto M., Nogami S., Ichinose T., Takeda K.

Methods in Ecology and Evolution 13 （ 5 ） 969 - 975 2022年05月

Determining animal abundance is crucial for assessing the effectiveness of management measures against pest animals. Meanwhile, investigating animal movements has become important for conducting abundance estimations of unmarked animals since the random encounter model (REM) was published. REM is a camera trapping method that derives animal density by using contact ratio between camera traps and targeted animals that randomly move at a certain speed in a given area. However, it requires an independent value, which is animal speed. For investigating animal speed, camera traps with video recording and GPS tagging are the commonly used tools. Unmanned aerial vehicles (UAVs) are currently used in wildlife monitoring to investigate the abundance of target species. It is evaluated as a tool that is non-invasive and suitable for surveys in inaccessible landscapes. Considering these characteristics, we regarded a distant survey using this technology as suitable for investigating animal movements. Therefore, we proposed a method for estimating animal movements using UAVs and conducted a case study that aimed to investigate wild boars' movements. We collected 11 video samples that successfully followed the movements of wild boars from 26 UAV flights in total, and the average speed of their movements derived from all the samples was 1.54 km/24 hr. We found that issues can be improved, including species identification, video sample length, and animal behaviours or activity patterns. On the other hand, our method showed potential for applying to species with specific characteristics in their body size, shape or activity patterns. With improvements in the issues mentioned above, UAVs would become an alternative tool for investigating animal movements.

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An economic value for ecosystem-based disaster risk reduction using paddy fields in the kasumitei open levee system

Yamada Y., Taki K., Yoshida T., Ichinose T.

Paddy and Water Environment （Springer Science and Business Media LLC） 20 （ 2 ） 215 - 226 2022年04月

ISSN 16112490

In this article, we examined the value of the traditional Japanese flood control measure that uses a discontinuous levee (kasumitei). By avoiding the use of flood-prone lowlands for inhabitation and allowing floodwater movement through the kasumitei, the cost of building damage can be reduced, and water supply to wetlands can be increased. The purpose of our study was to quantify flood damage cost reductions and the potential gains for wetland species as part of an ecosystem-based disaster reduction initiative. The study was conducted in the Amano River basin in central Japan. First, we applied a drainage model and calculated the flood damage cost reduction in the floodplain from an evaluation of inundation depth differences. As part of an analysis of potential wetness, we identified areas where 1 m of flooding was predicted in rice paddies near kasumitei. We also quantified a topographic wetness index, the ratio of lowlands, and the ratio of poorly drained soil types, all of which would be beneficial to wetland species. We also investigated land-use change in the area and the relevant financial support framework. The results showed that a simulated closed levee system causes greater inundation and exposure to residents, and the value of paddy areas near kasumitei was calculated to be 43,830 JPY/1000 m2/year at the maximum. Even though the paddies tend to be poorly drained, these areas have been continuously used as paddies for the past century even under development pressure. The economic value and habitat potential of kasumitei levee systems have not been considered as part of any previous flood-management policies. We propose these existing flood control areas to be considered in the financial support framework in the context of river basin and ecosystem-based disaster risk reduction management.

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こうありたい未来の農村計画

一ノ瀬友博, 遠藤和子, 栗田英治, 山下良平, 法理樹里, あるがゆう

農村計画学会誌（農村計画学会） 40 （ 4 ） 205 - 212 2022年03月

ISSN 09129731

地域循環共生圏による持続可能社会の構築

一ノ瀬友博

日本地域政策研究（日本地域政策学会） 28 （ 0 ） 4 - 11 2022年03月

ISSN 13485539

I am researching the Aso region to clarify the multilayered area of the regional circular and ecological sphere and the method for its construction. The largest area is the basin of six class A rivers flowing down from the Aso region as a regional circular and ecological sphere. Approximately two million people live in this basin, and 2.3 million people in the Fukuoka metropolitan area also use its water resource. The population of the Aso area, which is the source of the water, is about 210,000, and it is estimated that the population will be reduced by half by 2050. In the Aso area, there are more than 20,000 hectares of semi-natural grasslands, which play a significant role as a groundwater recharge area. The area of the grasslands is decreasing year by year due to the aging of the people involved in maintaining and managing them, and it is predicted that more than half of the grasslands will be lost by 2050 compared to 2003. To halt the decline in grassland areas, it is necessary to reduce the amount of labor required for burning at the end of winter.

The Impact of the COVID-19 Pandemic on the General Public in Urban and Rural Areas in Southern Japan

Sasaki K., Ichinose T.

Sustainability (Switzerland) 14 （ 4 ） 2022年02月

Urban and rural areas are situated in contrasting physical and social settings, which influence their levels of exposure as well as their preventive behaviors in response to the COVID-19 outbreak. The study investigated whether there were differences between the areas regarding the levels of difficulty and anxiety felt by the general public during the first wave of COVID-19 in April and May 2020. We conducted an online questionnaire in Fukuoka and Kumamoto Prefecture in southern Japan via a private research company and collected a total of 913 valid responses from individuals whose conditions of employment were affected by the coronavirus outbreak. Although urban areas experienced higher case rates compared to rural areas, ordinal logistic regression analysis revealed no significant differences between urban and rural respondents concerning the level of difficulty in routine life. The daily-life contents which made them feel difficult during the first wave also did not differ largely between the contrasting areas. Urban respondents appeared to have experienced a higher level of difficulty in finding an alternative job, but how respondents found one, if successful, did not differ between urban and rural areas. The area of residence played a role in explaining the level of anxiety toward being infected, especially when the anxiety-related questions involved relationships with neighbors. Rural respondents showed a significantly higher level of anxiety toward causing neighbors trouble and being criticized if infected. Respondents who were better embedded in their communities generally felt more anxious about being infected, regardless of whether they lived in urban or rural areas. Women and respondents with children were more likely affected by abnormal situations caused by the COVID-19 outbreak. Our study highlights the prevailing impact of the COVID-19 pandemic on the general public regardless of whether in urban or rural settings, as well as the potential contribution of social ties among people to protecting communities from infectious pathogens.

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阿蘇地域の草原維持に係わる労働力の閾値分析と求められる支援と対策

一ノ瀬友博

環境社会学研究 28 41 - 56 2022年

査読有り

CiNii Research

第1報告　生態系減災における森林の役割（2021年（公社）国土緑化推進機構「緑と水の森林ファンド」助成シンポジウム：森林へのまなざし─異分野共創・未来への投資─）

一ノ瀬友博

林業経済（一般財団法人林業経済研究所） 74 （ 12 ） 3 - 7 2022年

ISSN 03888614

地域循環共生圏による持続可能社会の構築

一ノ瀬友博

日本地域政策研究 28 4 - 11 2022年

CiNii Research

地球環境時代の田園自然再生

一ノ瀬友博

季刊JARUS 128 1 - 2 2022年

CiNii Research

水道組合によって管理運営される小規模水道の現状と管理運営の継続意向の把握―熊本県水俣市を事例に―

一ノ瀬友博

実践政策学 8 195 - 202 2022年

査読有り

CiNii Research

生態系減災における森林の役割

一ノ瀬友博

林業経済 74 3 - 7 2022年

CiNii Research

COVID-19への対応から生まれた教育・研究の現場における試行錯誤と可能性

秋田典子, 上田裕文, 町田怜子, 光成麻美, 一ノ瀬友博, 新保奈穂美

ランドスケープ研究（公益社団法人日本造園学会） 85 （ 3 ） 264 - 269 2021年10月

ISSN 13408984

阿蘇をモデル地域とした地域循環共生圏の構築

一ノ瀬友博

ランドスケープ研究（公益社団法人日本造園学会） 85 （ 2 ） 134 - 137 2021年07月

ISSN 13408984

東日本大震災からの復興において生態系減災は実装できたのか

一ノ瀬友博

農村計画学会誌（農村計画学会） 39 （ 4 ） 362 - 365 2021年03月

ISSN 09129731

新型コロナウィルス感染拡大と都市公園の利用に関する研究

室岡里菜, 花房昌哉, 一ノ瀬友博

都市計画報告集（公益社団法人日本都市計画学会） 19 （ 4 ） 469 - 478 2021年03月

新型コロナウィルスの感染拡大の影響により、人々の生活は大きく変化した。本研究では、コロナ禍での都市公園の利用状況について、観察型の調査を行った。対象公園として、東京都と神奈川県にある5公園を選定した。コロナ禍で遊具利用が禁止されていた秋葉台公園では、利用者の年齢層や人数が遊具利用解禁前後で大きく変化していた。また、緊急事態宣言下では公園の需要が高まっていたことや、緊急事態宣言前後で子供の利用行動が大きく変化していることが示唆された。さらに、6月に学校が再開されたことで、家族連れの利用者と子供のみの利用者の割合が大きく変化していた。こうした結果を基に、ポストコロナの公園マネジメントのあり方を検討する必要があると言えよう。

Hotspots of agricultural ecosystem services and farmland biodiversity overlap with areas at risk of land abandonment in Japan

Sasaki K., Hotes S., Ichinose T., Doko T., Wolters V.

Land 10 （ 10 ） 1031 2021年

ISSN 2073-445X

Agriculture provides a wide range of ecosystem services and has the potential to contribute to biodiversity conservation. In Japan, many of the resources associated with agroecosystems are threatened by farmland abandonment. Identifying where and to what extent agricultural ecosystem services and farmland biodiversity are affected by farmland abandonment is essential for developing effective strategies to counter the potential loss of these services and the biological communities that support them. Our study aimed to examine how a set of indicators for ecosystem services and biodiversity linked to agroecosystems (proportions of land dedicated to rice production and other agricultural production, proportion of agricultural land on slopes potentially providing landscape aesthetics, proportion of villages promoting rural tourism, and densities of forest edges and irrigation ponds in agricultural land) are distributed at the municipal level across the Japanese Archipelago, and to analyze their spatial patterns in relation to the distribution of farmland abandonment. It was hypothesized that hotspots of agricultural ecosystem services and farmland biodiversity occur in areas at risk of farmland abandonment owing to shared drivers. The cluster analysis identified four distinct ecosystem service bundle types, two of them representing areas specializing in agricultural production, while the other two provided high levels of cultural services and habitats for diverse biological communities. The latter two bundles were located in hilly and mountainous areas and accounted for 58% of rice production, 27% of other agricultural production, 77% of landscape aesthetics, 77% of rural tourism, 64% of forest edges, and 87% of irrigation ponds in Japan. In support of the hypothesis, farmland abandonment was pronounced in these areas, with 64% of recently abandoned fields located where 44% of agricultural land was found. This spatial overlap suggests that substantial losses of ecosystem services and biodiversity may occur if current patterns of farmland abandonment continue. In order to prevent large-scale losses of agricultural ecosystem services and farmland biodiversity, measures to counteract the ongoing abandonment trends should prioritize hilly and mountainous areas, and future studies should further evaluate the multiple functions of agricultural areas to improve policies that aim to ensure sustainable development of rural areas in Japan.

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