Iwanaga Seiji

J-GLOBAL         Last updated: Jun 5, 2019 at 12:12
 
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Name
Iwanaga Seiji

Published Papers

 
The tendency of expanding forest certification in Vietnam: Case analysis of certification holders in Quang Tri Province
Iwanaga S, Duong DT, Ha TH, Minh NV.
JARQ   53(1) 67-78   2019   [Refereed]
Impact of the change in raw material supply on enterprise strategies of the Japanese plywood industry
Iwanaga S, Tsuzuki N, Kuboyama H.
Journal of Forest Research   23(6) 1-11   2018   [Refereed]
OTSUKA Ikumi, HORI Yasuto, YAMADA Shigeki, IWANAGA Seiji, AMANO Tomomasa, KOMAKI Takaaki, MOCHIDA Haruyuki
Bulletin of the Forestry and Forest Products Research Institute   17(3) 233-248   2018
Downturns in Japanese timber prices are currently discouraging the participation of Japan's forest owners inmanagement practices, to the extent that timberlands are being sold and reforestation and renewal projects are being abandoned. In contrast...
Iwanaga Seiji, Yokota Yasuhiro, Hyakumura Kimihiko
JARQ-JAPAN AGRICULTURAL RESEARCH QUARTERLY   51(1) 31-43   Jan 2017   [Refereed]
ONDA Nariaki, YANAGISAWA Shota, OTA Masahiko, IWANAGA Seiji
FOREST ECONOMY   70(6) 1-21   2017
「ランド・スペアリング」は、一定の土地の生産性を高めることで、その他の土地の生物多様性保全を図る概念である。ランド・スペアリングのアプローチは、今後予想される人口増加に伴う食糧安全保障と生物多様性保全との両立のあり方を検討する目的で議論されてきた。本研究ではこの概念を援用し、集約的な土地利用の1つであるアブラヤシ農園の開発が自然保護区および地域社会に与えた影響を検討することで、アブラヤシ農園のランド・スペアリングとしての機能を評価した。インドネシア、西カリマンタン州に位置するアブラヤシ農園...
Prospects and Challenges of Reducing Emissions from Deforestation and Forest Degradation in Central Kalimantan Province, Indonesia
Hiratsuka M, Paudel S, Iwanaga S, Yaginuma H, Amano M.
International Journal of Environment and Sustainable Development   1(15) 49-66   2016   [Refereed]
IWANAGA Seiji
Journal of Forest Economics   62(1) 75-83   2016
In Java Island, Indonesia, where shows active utilization of private forest (PF) timber by timber processing industry, the relation between behaviors by the government, timber processing company, sawmill and farmer and the transition of forest are...
Tu Anh Nguyen, Masuda Misa, Iwanaga Seiji
TROPICS   24(4) 153-167   2016   [Refereed]
Thi Thuy Phuong Nguyen, Masuda Misa, Iwanaga Seiji
TROPICS   24(4) 169-180   2016   [Refereed]
IWANAGA Seiji, ANAKURA Natsuko, ONDA Nariaki, AMANO Masahiro
Journal of Forest Economics   61(1) 75-85   2015
Oil palm plantation has a negative impact on Global warming on particularly on peat land that is not suitable for agriculture. This survey focuses on two factors that change the source of income and economic condition of the local people in Centra...
Estimation of potential GHG emission reduction through corresponded REDD plus activities in Remote Area in Central Kalimantan, Indonesia: Case study in the Paduran Area
Hiratsuka M, Iwanaga S, Tsuzuki H, Yaginuma H.
Open Journal of Forestry   4 338-348   2014   [Refereed]
IWANAGA Seiji, HIRATSUKA Motoshi, YAGINUMA Hirofumi
Journal of Forest Economics   60(3) 25-36   2014
To improve the livelihood of local people involved in the Reducing Emissions from Deforestation and Forest Degradation and the role of conservation, sustainable management of forests and enhancement of forest carbon stocks in developing countries ...
Effects of contract tree farming by timber processing companies on forest resources:A case study in Tasikmalaya, West Java, Indonesia
Iwanaga S, Wijaya CI.
Proceedings of 12th Science Council of Asia Conference   67-68   2013   [Refereed]
Shift in raw materials for the wood processing industry in Java Island, Indonesia: A perspective from the post natural forest era
Iwanaga S, Masuda M.
TROPICS   22(3) 119-129   2013   [Refereed]
Onda Nariaki, Iwanaga Seiji, Anakura Natsuko, Wijaya Chandra Irawadi, Amano Masahiro
Japanese Journal of Forest Planning   46(2) 45-56   2013
Large-scale forest development, natural forest harvesting, and oil palm planting have created employment opportunities for rural people in transmigration villages in Indonesia. However, large-scale forest development is expected to decline owing t...
IWANAGA Seiji
Journal of Forest Economics   58(2) 14-22   2012
In Java, where private forest area has been recently increasing, I examined the relations between Timber Processing Company B and farmers, who produce timber sourced from the private forests, through contract planting that implemented by Company B...
飯田 祥史, 岩永 青史, 増田 美砂
Bulletin of Tsukuba University Forests   (27) 109-122   Mar 2011
岩永 青史, 赤羽 洋, 御田 成顕
Bulletin of Tsukuba University Forests   (26) 1-16   Mar 2010
IWANAGA Seiji, SHIGA Kaori, DAMAYANTI Ellyn K., MASUDA Misa
Journal of Forest Economics   55(2) 1-9   2009
This study aimed at examining what kind of people would support conversion of farmland to tree plantations under the framework of National Movement of Rehabilitation of Forests and Land, a nation-wide afforestation program started in 2003. Wonogir...

Misc

 
Forest conservation and rehabilitation policies in Vietnam: their assessments and local responses
Masuda M, Iwanaga S, Kaida N, Yoshino K.
Tropics   24(4) 139-140   2016
岩永 青史, 増田 美砂
筑波大学農林技術センター演習林報告   (28) 101-112   Mar 2012
岩永 青史, 増田 美砂
海外の森林と林業   0(83) 42-47   Jan 2012
IWANAGA SEIJI, IIDA YOSHIFUMI
The Japanese Forest Society Congress   119(0) 198-198   2008
Carrying capacity approach to forest management in developing countries
Masuda M, Iwanaga S, Shiga K, Prasetyo L, Damayanti E.
The international forestry review: Sustaining forests, sustaining people (Abstract of XXIV IUFRO World Congress, 5-11 October 2014, Salt Lake City, USA)   16(5) 464-465   2014   [Refereed]

Books etc

 
Research Manual Vol.3 Social Safeguards
Furukawa T, Iwanaga S, Okabe K, Toda M. (Part:Joint Work)
FFPRI   2017   

Conference Activities & Talks

 
Iwanaga Seiji, djanto Har
The Japanese Forest Society Congress   2009