死亡区的经济学:将陆地外部性与其海洋后果联系起来

The Economics of Dead Zones: Linking Externalities from the Land to their Consequences in the Sea

American Journal of Agricultural Economics · 2012
被引 5
人大 AABS 3

中文导读

这篇综述分析了全球缺氧区的成因、生态影响及治理政策,并以墨西哥湾为例,估计了营养物质与缺氧区面积的关系,指出即时和遗留营养物共同影响缺氧区大小,对政策制定有重要参考价值。

Abstract

The purpose of this review and analysis is to provide a basic understanding of the issues related to worldwide hypoxic zones and the range of economic questions sorely in need of answers. We begin by describing the causes and extent of hypoxic zones worldwide, followed by a review of the evidence concerning ecological effects of the condition and impacts on ecosystem services. We describe what is known about abatement options and cost effective policy design before turning to an analysis of the large, seasonally recurring hypoxic zone in the Gulf of Mexico. We advance the understanding of this major ecological issue by estimating the relationship between pollutants (nutrients) and the areal extent of the hypoxic zone. This “production function” relationship suggests that both instantaneous and legacy contributions of nutrients contribute to annual predictions of the size of the zone, highlighting concerns that ecologists have raised about lags in the recovery of the system and affirms the importance of multiple nutrients as target pollutants. We conclude with a discussion of critical research needs to provide input to policy formation.

富营养化缺氧区生态系统服务成本效益政策墨西哥湾