研究者詳細 - 嶋　一徹

論文 - 嶋　一徹

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Soil Properties Variation Valued in Relation to Land Use and Management Practices in Vietnam 査読

K. H.T. Dinh, K. Shima

Indian Journal of Agricultural Research 58 ( 4 ) 634 - 641 2024年8月

記述言語：英語掲載種別：研究論文（学術雑誌）

Background: Land use and management practices (LUMPs) have been accelerated globally to serve the increasing socioeconomic requirements in recent decades. Methods: This study focuses to assess the impacts of the LUMPs on the properties and composition of soil in the Lam River Basin (LRB), Vietnam based on analysis of ninety-six soil samples collected in the soil profiles (0_60 cm). Result: The results indicated that the sand and clay ratios (34.0~35.7% and 16.2~19.9%) and bulk density (BD) (1.07±0.05~1.34±0.06 Mg m-3) in the natural forest lands (NFLs) were lower and higher perturbed than the plantation forest lands (PFLs) (31.1~ 51.5%, 5.7~38.2% and 0.86±0.03~1.12±0.05 Mg m-3) in the 0–20 cm topsoil layer. The soil texture is mainly sandy clay to clay loam and the BD tends slightly increase in the topsoil layer, then decrease in the 20–60 cm subsoil layer. There is no difference in soil pH between collected soil samples (CSSs) and tends to increase with increasing the subsoil layer. The base cations (BCs) (Ca2+, K+, Mg2+: 0.01~0.29, 0.06~0.11 and 0.06~0.07 Cmolc kg-1) and total organic contents (TOCs) (total carbon (TC), total nitrogen (TN), total phosphorus (TP): 24.11; 2.80 and 0.19 g kg-1) of the NFLs are higher than those of the CSSs (TC, TN, TP: 14.37~23.91, 1.62~2.28 and 0.08~0.17 g kg-1) in the topsoil layer while these values were not different in the topsoil layer.

DOI： 10.18805/IJARe.AF-818

Assessment of physico-chemical parameters of primaeval forest soil in Thanh Chuong District of Nghe An Province, Vietnam 査読

Kim Hao Thi Dinh, Kazuto Shima

Research on Crops 23 ( 2 ) 339 - 346 2022年6月

掲載種別：研究論文（学術雑誌）

The physicochemical features of soil (PFOS) play an important role in the growth process of flora and vegetative diversity of the primaeval forests. The PFS in the primaeval forest belonging to Thanh Chuong District in Nghe An Province, Vietnam was investigated during 2016-2019 to assess the fertility and productivity status of the soils. To deploy this work, ninety-six soil samples at eight random locations from twenty-four sampling plots represented the upper, middle, and lower of the study area were analyzed for soil texture (ST), bulk density (BD), pH, total nitrogen (TN), total phosphorus (TP), and exchangeable cations (ECs) (K+, Ca2+ and Mg2+ ). Texturally, the soils were clay loam to sandy clay with average percentages of sands around 41%, silts 19%, and clay 40% while the bulk density of the soils was 0.83-1.41%. The acidic to slightly acidic soil pH (4.01-4.82) and high TN (0.95-2.66 g/kg) and TP varies from 0.06 and 0.18 g/kg. Correlation analysis of the physicochemical parameters was conducted using the Pearson correlation test in R programming. Analysis showed that the variation in the texture of silt content among the soil depth was minimal.

DOI： 10.31830/2348-7542.2022.046

Effects of forest reclamation methods on soil physicochemical properties in North-Central Vietnam 査読

Kim Hao Thi Dinh, Kazuto Shima

Research on Crops 23 ( 1 ) 110 - 118 2022年3月

掲載種別：研究論文（学術雑誌）

Globally, forest loss is happening because of timber harvesting, agricultural expansion, wildfires, mining extraction and service transportation networks via roads. This study was conducted during 2016 to 2019 at Ngoc Lam Commune, Thanh Chuong District, Nghe An Province, Vietnam on the effect of forest reclamation methods (FRMs), including the slash-and-burn method (SBM), the clear-cutting method (CCM), and agricultural cultivation methods on the interaction of soil physicochemical properties across the study area. To conduct this study, soil samples were collected in natural forest areas in the study area. The results indicated that the bulk density (BD) of the natural forest soils across the study area ranged from 0.86 to 1.12 g/cm3 at depths varying from 0 to 60 cm from the surface. The concentrations of total carbon (T-C), exchangeable potassium (Exch. K+), and exchangeable magnesium (Exch. Mg2+) in the deeper layer were normally lower than in the upper layer. Forest reclamation using the CCM influenced the increase of the BD at depths varying from 0-20 cm, but the soil texture remained same, while forest reclamation applying the CCM showed an increase in the BD in the plots depending on the land-use management (LUM). Based on these findings, LUM has a significant influence on the concentration of Exch. Ca2+, Exch. K+, Exch. Mg2+, and T-C compared to FRMs across the North-Central Vietnam.

DOI： 10.31830/2348-7542.2022.016

Evaluation of Compost from On-Farm Composting of Coffee Pulp Using Wood Chips and Air Flow 査読

Hoang Thi Quynh, Morita Mishio, Shima Kazuto

JOURNAL OF BIOBASED MATERIALS AND BIOENERGY 14 ( 3 ) 408 - 413 2020年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER SCIENTIFIC PUBLISHERS

Being the second largest coffee producing country worldwide, Vietnam is estimated to annually generate approximately 1 million m(3) of coffee pulp. Instead of being effectively utilized in the form of recycling resources, most of the waste is discarded, causing serious environmental pollution even though it contains essential macronutrients in high concentrations. In this study, we performed on-farm composting trials of coffee pulp with simple aeration using wood chips and air flow. After 2 months of composting, samples were collected for analysis and a cultivation experiment was conducted to clarify the effectiveness of the composts. Coffee pulp compost was a nutrient-rich organic material with the total C, total N and total K in the range of 340.35-386.02 g kg(-1), 23.80-36.70 g kg(-1), and 18.86-25.13 g kg(-1), respectively. The C:N ratio was in the range of 10-15 and the NH4-N:NO3-N ratio was in the range of 1-2, indicating compost was mature. In the compost where wood chips were used as the bulking agent under air flow, exhibited a concentration of inorganic N that was significantly higher than that of the other composts. The plant biomass corresponding to the compost showed similarity with chemical fertilizer. Furthermore, the P content and the plant biomass produced by the compost in which chicken manure was added, were investigated. The results indicate that the addition of P-source in the manufacturing process enhanced the fertilizing efficiency of the compost.

DOI： 10.1166/jbmb.2020.1971

Composting of Sewage Sludge with a Simple Aeration Method and its Utilization as a Soil Fertilizer. 査読国際誌

Thanh-Binh Nguyen, Kazuto Shima

Environmental management 63 ( 4 ) 455 - 465 2019年4月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SPRINGER

The objective of this study was to examine the feasibility of sewage sludge composting using a simple aeration method. Two consecutive composting trials (run A and run B) using Japanese sludge and woodchips (1:1, v/v) were conducted in cubic boxes (0.45x0.45x0.45 m(3)) made by plywood at Okayama University. Air was forced up through small holes perforated on two open-ended parallel PVC pipes (O 16mm, 0.25m apart) laid at the base. The results show that compost temperatures were rapidly increased to the peak points of 47.4 degrees C (run A) and 74.8 degrees C (run B) within the first 2-3 days and varied depending on each composting run and vertical locations. The changes in physicochemical properties with particular attention to inorganic nitrogen (NH4-N, NO3-N) and free amino acid nitrogen (FAA-N) indicated that the biodegradation took place by different mineralization pathways during the composting process. The degradation of organic matter into amino acids followed by ammonification was predominant in run B, whereas the nitrification was greater in run A. A pot experiment using the two finished composts and their raw materials was carried out to study their effectiveness as fertilizer to Komatsuna (Brassica rapa var. perviridis). The total plant biomass produced by the composts was similar to chemical fertilizer. The lowering proportions of FAA-N/T-N, NH4-N/NO3-N, and C/N ratios in the composts compared to those in raw materials was found to correlate with the increase in plant biomass.

DOI： 10.1007/s00267-017-0963-8

Composting of Sewage Sludge with a Simple Aeration Method and its Utilization as a Soil Fertilizer 査読

Thanh Binh Nguyen, Kazuto Shima

Environmental Management 63 ( 4 ) 455 - 465 2019年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SPRINGER

The objective of this study was to examine the feasibility of sewage sludge composting using a simple aeration method. Two consecutive composting trials (run A and run B) using Japanese sludge and woodchips (1:1, v/v) were conducted in cubic boxes (0.45 × 0.45 × 0.45 m 3 ) made by plywood at Okayama University. Air was forced up through small holes perforated on two open-ended parallel PVC pipes (ø 16 mm, 0.25 m apart) laid at the base. The results show that compost temperatures were rapidly increased to the peak points of 47.4 °C (run A) and 74.8 °C (run B) within the first 2–3 days and varied depending on each composting run and vertical locations. The changes in physicochemical properties with particular attention to inorganic nitrogen (NH 4 –N, NO 3 –N) and free amino acid nitrogen (FAA-N) indicated that the biodegradation took place by different mineralization pathways during the composting process. The degradation of organic matter into amino acids followed by ammonification was predominant in run B, whereas the nitrification was greater in run A. A pot experiment using the two finished composts and their raw materials was carried out to study their effectiveness as fertilizer to Komatsuna (Brassica rapa var. perviridis). The total plant biomass produced by the composts was similar to chemical fertilizer. The lowering proportions of FAA-N/T-N, NH 4 –N/NO 3 –N, and C/N ratios in the composts compared to those in raw materials was found to correlate with the increase in plant biomass.

DOI： 10.1007/s00267-017-0963-8

Title "Organic Fertilizers" in Vietnam's Markets: Nutrient Composition and Efficacy of Their Application 査読

Hoang Thi Quynh, Shima Kazuto

SUSTAINABILITY 10 ( 7 ) 2018年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：MDPI

Organic fertilizers have recently been gaining popularity; however, their governance is not completely assessed in developing countries. This study investigated the nutrient composition of so-called organic fertilizers in Vietnam's markets and issues related to their production, and evaluated their potential to contaminate the groundwater. We analyzed the physicochemical properties of 12 domestic and four imported products of the fertilizers, and conducted a cultivation experiment in sandy soil with the fertilizer applied at a rate of 200 mg N kg(-1) soil using an automatic watering apparatus in a greenhouse. We further studied the production of an "organic fertilizer" from coffee by-products. The nutrient content greatly varied among domestic products, whereas they were quite similar among imported products. The product packaging of the collected samples lacked information regarding raw materials. Two thirds of the domestic products contained over 30% of the total N in the inorganic form, implying that the N content dramatically increased in the fertilizers rather than in their supposed raw materials. The stages involved in the production were composting, the addition of extra soil as a bulking agent, and the mixing-in of chemical substances to increase the nutrient content before packing. The remarkably high ratio of inorganic N to total N was attributed to excessive N leaching from soil by the application of domestic fertilizers. These results suggested the need for quality criteria guidelines for organic fertilizers in Vietnam that underline not only nutrient levels, but also the control of raw materials and production process of compost, because they are closely related to nutrient uptake and the leaching loss of nutrients.

DOI： 10.3390/su10072437

Change in uptake, transport and accumulation of ions in Nerium oleander (rosebay) as affected by different nitrogen sources and salinity. 査読国際誌

Ahmad Abdolzadeh, Kazuto Shima, Hans Lambers, Kyozo Chiba

Annals of botany 102 ( 5 ) 735 - 46 2008年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：OXFORD UNIV PRESS

Background and Aims The source of nitrogen plays an important role in salt tolerance of plants. In this study, the effects of NaCl on net uptake, accumulation and transport of ions were investigated in Nerium oleander with ammonium or nitrate as the nitrogen source in order to analyse differences in uptake and cycling of ions within plants.Methods Plants were grown in a greenhouse in hydroponics under different salt treatments (control vs. 100 mM NaCl) with ammonium or nitrate as the nitrogen source, and changes in ion concentration in plants, xylem sap exuded from roots and stems, and phloem sap were determined.Key Results Plant weight, leaf area and photosynthetic rate showed a higher salt tolerance of nitrate-fed plants compared with that of ammonium-fed plants. The total amount of Na(+) transported in the xylem in roots, accumulated in the shoot and retranslocated in the phloem of ammonium-fed plants under salt treatment was 1.8, 1.9 and 2.7 times more, respectively, than that of nitrate-treated plants. However, the amount of Na(+) accumulated in roots in nitrate-fed plants was about 1.5 times higher than that in ammonium-fed plants. Similarly, Cl(-) transport via the xylem to the shoot and its retranslocation via the phloem (Cl(-) cycling) were far greater with ammonium treatment than with nitrate treatment under conditions of salinity. The uptake and accumulation of K(+) in shoots decreased more due to salinity in ammonium-fed plants compared with nitrate-fed plants. In contrast, K(+) cycling in shoots increased due to salinity, with higher rates in the ammonium-treated plants.Conclusions The faster growth of nitrate-fed plants under conditions of salinity was associated with a lower transport and accumulation of Na(+) and Cl(-) in the shoot, whereas in ammonium-fed plants accumulation and cycling of Na(+) and Cl(-) in shoots probably caused harmful effects and reduced growth of plants.

DOI： 10.1093/aob/mcn156

Drought Adaptation Confers Short-Term but Not Long-Term Salt Tolerance in Cocksfoot, Dactylis glomerata 査読

Ahmad Abdol Zadeh, Kazuto Shima, Erik J. Veneklaas, Kyozo Chiba

International Journal of Botany 4 ( 3 ) 283 - 289 2008年6月

掲載種別：研究論文（学術雑誌）出版者・発行元：Science Alert

The effects of different levels of NaCl (0, 50, 100 and 150 mM) on growth, water relations, ions accumulation and nitrogen assimilation in two varieties of Dactylis glomerata, i.e., Hispanica from a semi-arid area and Frontier from a temperate climate, were studied in a greenhouse in hydroponic culture. Salinity induced a significant decrease in the growth of both varieties; however, their responses to NaCl stress were different. Based on weight and photosynthesis, Hispanica was found initially to be more resistant to salinity than Frontier. However, over a longer period of salinity treatments, Frontier displayed higher salt tolerance, especially at 50 mM NaCl concentration. The initial resistance to salinity of Hispanica, compared to Frontier, appeared to be related with a greater decrease in transpiration and water potential due to salinity, while there was no change in relative water content, suggesting better osmotic adjustment. In contrast, Frontier demonstrated more exclusion of Na+ and Cl- from the xylem stream and a higher K+/Na + ratio, leading to a less harmful effect of salinity in the shoot, manifesting itself in better growth of this variety over the longer term. The results support the hypothesis that growth response to salinity has two phases. The first phase of growth reduction is mostly due to water (osmotic) stress, with the drought adapted variety, Hispanica, exhibiting higher tolerance. In the second phase, when toxic effects of accumulated Na+ and Cl - in tissues caused growth retardation, Frontier proved to have the higher resistance to salinity. © 2008 Asian Network for Scientific Information.

DOI： 10.3923/ijb.2008.283.289

下水汚泥焼却灰の緑農地利用に関する研究査読

嶋一徹, 片山博子

日本緑化工学会誌 33 ( 1 ) 128 - 133 2007年

担当区分：責任著者記述言語：日本語出版者・発行元：日本緑化工学会

下水汚泥焼却灰を緑農地において資源として活用するために，焼却処理が肥料成分と含有重金属の質，量におよぼす影響を検討した。その結果，900℃で焼却した下水汚泥は亜鉛，銅，鉛の難溶化とカドミウムの揮発損失による減量が図られる事実を明らかにした。これと同時に窒素成分については失われるものの可給態リン含有率が増加することで肥料として利用可能であることが示唆された。さらに栽培試験の結果，黒ボク土においては十分な肥料効果が認められ，施用土壌の可溶性重金属の増加も認められないことを明らかにした。

DOI： 10.7211/jjsrt.33.128

On the possibility of growing bamboo as an alternative crop in the Eastern Black Sea region of Turkey 査読

Devlet Toksoy, Hasan Ayyildiz, Musatafa Var, Shima Kazuto, Chiba Kyozo

Journal of Bamboo and Rattan 5 ( 1-2 ) 73 - 78 2006年

掲載種別：研究論文（学術雑誌）

This study investigates by a direct questionnaire suvery the response of 508 tea farmers to bamboo as an alternative crop in the Eastern Black Sea region of Turkey. It is found that 77.6 per cent of the participants were not satisfied with tea farming and 76.8 per cent of the participants emphasised that they would like to consider growing an alternative crop. However, 49.6 per cent were not aware of the potential of bamboo. After providing some information about bamboo, only 18.3 per cent farmers were willing to try growing bamboo as an alternative crop. © KFRI 2006.

山火事跡地斜面における土壌環境の変化が炭酸ガス放出におよぼす影響査読

竹中学, 嶋一徹

日本緑化工学会誌 31 ( 1 ) 198 - 201 2005年

記述言語：日本語出版者・発行元：日本緑化工学会

山火事後の経過時間の異なる2つの林分で土壌炭素の無機化特性とそれが見かけの窒素無機化活性に及ぼす影響について調査を行った。その結果，山火事後1年目の調査地は2年が経過した調査地と比較して，炭素無機化活性は低く，温度や含水比の変化に対する反応も小さかった。このような低い炭素無機化活性は，山火事直後の見かけの窒素無機化活性を高める要因のひとつであると考えられた。

DOI： 10.7211/jjsrt.31.198

潜在自然植生種を導入した切土法面における施行後14年目の植生変化査読

和田みつき, 嶋一徹, 千葉喬三, 西本孝

日本緑化工学会誌 31 ( 1 ) 167 - 170 2005年

記述言語：日本語出版者・発行元：日本緑化工学会

潜在自然植生種を用いて緑化を行った切土法面において施工後14年目の植生回復の状況を調査した。植栽木の健全個体は減少していたが，一部は良好に生育し，それらの種子由来の実生もみられた。一方侵入マツ類は施工直後に侵入した個体が上層樹冠を優占し，当年生実生も多数みられたが枯死割合は高く，今後下層ではマツ類にかわって広葉樹類が発達し，いずれは常緑広葉樹林へ移行するものと予測した。

DOI： 10.7211/jjsrt.31.167

山火事跡地における実生定着とそれらが水と表土の移動に及ぼす影響査読

木下尚子, 嶋一徹

日本緑化工学会誌 31 ( 1 ) 194 - 197 2005年

記述言語：日本語出版者・発行元：日本緑化工学会

瀬戸内沿岸の山火事跡地斜面に樹幹伐倒処理を施し，周辺林分に分布する先駆木本類の播種を行った播種区と対照区を設け，植生や流亡した水と土壌量の違いを調査した。その結果，播種区では実生数の増加や生育の促進が認められ，流亡する水や表土の減少量が対照区を上回った。そのことから，小さなサイズの実生でも多数存在することで山火事跡地斜面の荒廃地化抑制に大きく貢献することが明らかになった。

DOI： 10.7211/jjsrt.31.194

タケ炭の重金属吸着能とマルチング資材としての効果

藤原敏, 嶋一徹, 千葉喬三

日本緑化工学会誌 30 ( 1 ) 39 - 44 2004年

記述言語：日本語出版者・発行元：日本緑化工学会

未利用有機資源であるタケの有効利用を考え，タケ炭化物の重金属吸着能を木炭，活性炭のそれと比較した。その結果，炭化温度に関係なく炭化物のpHが塩基性を示し，カリウムを多く含むタケ炭は優れた吸着能を有していることが明らかとなった。そこで，道路中央分離帯内の植栽樹木下でタケ炭をマルチング資材として利用した際の，浮遊粉塵中の重金属吸着能について実証試験を行った。その結果，植栽下にタケ炭を敷設することにより重金属汚染の抑制に効果的であることが明らかとなった。

DOI： 10.7211/jjsrt.30.39

潜在自然植生種を用いた法面緑化施工後の植生変化-施工後13年が経過した切土法面での事例- 査読

和田みつき, 嶋一徹, 西本孝, 千葉喬三

日本緑化工学会誌 30 ( 1 ) 235 - 238 2004年

記述言語：日本語出版者・発行元：日本緑化工学会

潜在自然植生種を用いた早期樹林化を目指した切土法面で施工後の植生回復状況を調査した。施工後13年時点で植栽木は生存するものの健全個体は半数以下であり，周辺から侵入したマツ類が上層樹冠を優占し，下層には広葉樹と当年生マツ類の実生が多数分布していた。施工直後からマツ類が侵入した斜面上部では新たな実生の定着が困難であり，今後はマツ林を経て広葉樹林へ移行することが予想された。

DOI： 10.7211/jjsrt.30.235

山火事跡地における先駆木本類の発芽・定着特性査読

木下尚子, 嶋一徹, 広野正樹

日本緑化工学会誌 30 ( 1 ) 336 - 339 2004年

記述言語：日本語出版者・発行元：日本緑化工学会

瀬戸内沿岸の山火事跡地斜面に分布する先駆木本類6樹種について埋土深と土壌加熱が種子発芽に及ぼす影響を調査した。その結果，山火事により土壌表層では短時間高温に晒されるが，深さ4 cm程度の土壌では50 ℃以下の温度が長時間継続することが判明し，この深さに埋土されたアカメガシワ，クサギは加熱で発芽促進が認められた。これに対してアカマツは埋土すると発芽できず，耐熱性が低いため火事後の種子供給が必須なことが明らかになった。

DOI： 10.7211/jjsrt.30.336

タケ炭ならびにリン施肥が劣悪土壌での肥料木と緑化牧草類の混植に及ぼす影響査読

YAN G Z, 嶋一徹, 藤原敏, 千葉喬三

日本緑化工学会誌 30 ( 1 ) 33 - 38 2004年

担当区分：責任著者記述言語：日本語出版者・発行元：日本緑化工学会

養分集積が極めて乏しい花崗岩風化土においてリン供給と土壌改良効果を期待してタケ炭を施用し，混植植物の生育に及ぼす影響を調べた。その結果，タケ炭施用により肥料木の根粒着生は抑制され成長は劣っていたが，同時にリン施肥をすると単植された肥料木の成長は良好になった。しかし，緑化牧草と混植した場合，タケ炭施用とリン施肥を同時に行っても肥料木の成長は劣っていた。これよりタケ炭は土壌リンを吸着するが、その量は僅かであり施肥によるリン供給を伴えば肥料木に対する施用効果が現れることが期待できる。しかし，緑化牧草を混植するとリン吸収力の違いからリン欠乏が十分に解消されないことが示唆された。

DOI： 10.7211/jjsrt.30.33

劣悪土壌での肥料木生育に及ぼす緑化牧草類混植の影響査読

YAN G Z, 嶋一徹, 千葉喬三

日本緑化工学会誌 29 ( 1 ) 33 - 38 2003年

担当区分：責任著者記述言語：日本語出版者・発行元：日本緑化工学会

劣悪土壌での肥料木生育に及ぼす緑化牧草類混植の影響を調査した。試験は肥料木としてニセアカシアとメラノキシロン, アカシア, 緑化牧草としてイタリアンライグラスを用いて混植の密度と時期そしてリン施肥が及ぼす影響を検討した。その結果, イタリアンライグラスの混植は肥料木の成長を抑制することが判明した。また混植にともない肥料木では, 根粒着生量が減少することが明らかになった。しかし, この成長低下はリン施肥により回避することができた。これらの結果より緑化牧草混植にともなうリン欠乏が肥料木の根粒着生を阻害することで成長を著しく低下させると考えられた。

DOI： 10.7211/jjsrt.29.33

岡山市主要幹線道路脇緑地帯における重金属集積査読

嶋一徹, 相原健児, 千葉喬三

日本緑化工学会誌 29 ( 1 ) 231 - 234 2003年

担当区分：責任著者記述言語：日本語出版者・発行元：日本緑化工学会

岡山市中心部の主要幹線道路脇の緑地帯119地点を選び，土壌表層における重金属元素の集積状況を調査した。その結果，深さ0-2.5 cmの表土における重金属含有率は亜鉛396.92 mg, kg^-1，鉛52.13 mg, kg^-1，カドミウム0.59 mg, kg^-1であった。また，自動車タイヤには亜鉛，鉛が高濃度で含有されており，表土の亜鉛と鉛含有率には相関が認められたが，交通量と間には明確な関係は認められなかった。

DOI： 10.7211/jjsrt.29.231

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