鮫島 弘光

The drastic transformation in land use from natural forest to acacia and oil palm plantations in tropical regions is an issue of some controversy. The influence of land-use change on nutrient cycling is not fully understood. In this case, stream water chemistry is one of the most useful indexes of the nutrient status of an ecosystem. We...

It is important to understand carbon (C) dynamics in terrestrial and coastal ecosystems in order to develop a strategy to control carbon dioxide effluxes. However, the factors determining concentrations of riverine carbon are still largely unknown, especially in Southeast Asia. We investigated the spatial distribution of dissolved and particulate...

Over the last few decades, the landscape of Borneo has drastically changed from primary forests to a mosaic of secondary forests and crop plantations, and more recently to the monocultures of single crop plantations. At the same time, livelihoods have become more linked to urban economies. To evaluate the effects of these changes on hunting...

In the traditional agricultural land-use pattern of the indigenous peoples of inland Sarawak, there are small areas of primary forests, referred to as a pulau or communally reserved forests (CRFs), which are customarily reserved by local communities. Here, we investigate the current condition and geographic distribution of CRFs in the human...

Southeast Asian countries have been important suppliers of tropical timber to Japan since the early twentieth century. This chapter begins with a comparative examination of the history of the timber trade in the Philippines, Malaysia (Sabah and Sarawak), Indonesia and Papua New Guinea, for whom Japan has historically been the major market for round...

The biodiversity of stream-dwelling fish and the effects of oil palm and acacia plantations on this biodiversity were evaluated by field research conducted in the Bintulu region of central Sarawak, Malaysia. A quantitative survey was conducted at 61 locations by electrofishing. These 61 locations included 16 sites in oil palm plantations, five...

Japan is still the largest market for timber from Sarawak. Thus, it is important to understand the latest trends of the policy and initiative for timber legality and sustainability. Japan issued the Act on Promotion of Use and Distribution of Legally-harvested Wood and Wood Products (Clean Wood Act) in 2016. The objective of this new act is to...

This article examines the REDD+ engagement types preferred by Japanese private firms at the project level including their motivation and rationale for the engagement and explores the challenges and opportunities in relation to their participation. We analyzed 148 responses to a survey questionnaire mailed to participants across Japan and the...

The Anap Muput Forest Management Unit (AMFMU) located in Bintulu, Sarawak, Malaysia is a production forest. It have undergone at least one or two cycle of selective logging where valuable timber species are depleting. Therefore the structure, composition and productivity of the re growth forests are quite different from the virgin stands. Measuring...

我が国の違法伐採木材への対策のために平成29年５月に施行された「合法伐採木材等の流通及び利用の促進に関する法律」（通称「クリーンウッド法」）を着実に推進していく必要があるが、本法に基づき、木材関連事業者が合法性の確認を行うにあたり、追加的措置として追加的な情報収集が必要となる場合がある。本事業では木材関連事業者が効率的に追加的な情報収集の取組が実施できるように、違法伐採対策に関する法制度がある国でのリスク低減に係る先進事例の情報収集を行った。 調査対象国はEU木材規則（EUTR）の下、違法に伐採された木材の輸入を禁止し、その確実な確認（Due Diligence）を事業者に求めているドイツ、オランダ、イギリス、フィンランド、スウェーデンの5ヵ国とした。