2026-09-09 九州大学
図1. 能動型漁業における各投入の非効率性に関する箱ひげ図
＜関連情報＞
- https://www.kyushu-u.ac.jp/ja/researches/view/1569
- https://www.sciencedirect.com/science/article/abs/pii/S0038012126001631
漁業主体の効率性評価と持続可能な漁業政策：日本からの証拠 Efficiency evaluation of fishing entities and sustainable fishery policies: Evidence from Japan
Hisashi Ito, Taiga Shimotsuura, Tomoaki Nakaishi, Shigemi Kagawa
Socio-Economic Planning Sciences Available online: 31 July 2026
DOI:https://doi.org/10.1016/j.seps.2026.102576
Highlights
- Fuel costs are the largest source of inefficiency across all fishery types.
- Regional heterogeneity strongly shapes inefficiency in Japanese coastal fisheries.
- Meta-Frontier DEA separates regional constraints from managerial inefficiency.
- Policy measures should match each region, fishery type, and inefficiency source.
Abstract
This study evaluates efficiency and its determinants in Japan’s coastal fisheries using a Slack-Based Measure (SBM) Data Envelopment Analysis (DEA) and a meta-frontier DEA framework. We analyze 250 fishing entities—132 active, 46 passive, and 72 hook-and-line fisheries—across five coastal regions. The SBM results reveal pronounced regional heterogeneity: the average inefficiency in active fisheries ranges from 0.35 in the Northern Sea of Japan Coast to 0.50 in the Seto Inland Sea. The input decomposition shows that fuel costs are the largest contributors to inefficiency (0.67), followed by gross vessel tonnage (0.46), crew size (0.42), and fishing days (0.35). Meta-frontier analysis indicates that inter-regional inefficiency dominates on the Northern Pacific Coast, Southern Sea of Japan Coast, and Seto Inland Sea, whereas intra-regional inefficiency is predominant on the Southern Pacific Coast. These results highlight the need for quantitatively targeted regional- and fishery-specific policy interventions.
