A comparison of regional and national values for recovering threatened and endangered marine species in the United States.
A comparison of regional and national values for recovering threatened and endangered marine species in the United States.
复制标题
美国恢复受威胁和濒危海洋物种的区域和国家价值的比较。
DOI：
10.1016/j.jenvman.2016.04.053
复制
发表时间：
2016
影响因子：
8.7
通讯作者：
Daniel K. Lew
中科院分区：
文献类型：
--
作者：
K. Wallmo;Daniel K. Lew
人们普遍承认，环境商品的支付意愿估计数具有一定程度的空间差异。在政策背景下，受威胁和濒危物种价值的空间变化是很重要的理解，因为影响受威胁和濒危物种的政策的利益流可能会有所不同，地方，区域或某些人口部分。在本文中，我们提出了八个不同的受威胁和濒危海洋物种估计从一个规定的偏好选择实验的支付意愿估计。WTP是在两个不同的空间尺度上估计的：（a）超过5000个美国家庭的随机样本和（B）九个美国人口普查地区的地理嵌入样本（相对于美国家庭样本）。我们进行区域与区域和区域与国家的统计比较，以确定各地区之间以及每个地区与整个美国之间的物种价值是否不同。我们的结果显示，国家价值与区域嵌入样本估计的价值之间的空间差异有限，八种物种中只有三种存在差异。区域之间存在更多的差异，对于所有物种，至少在一个区域间比较中存在显著差异。鉴于涉及受威胁和濒危海洋物种的政策分析往往具有区域范围（例如，生态系统管理）或可能对不同区域产生重大影响，我们的研究结果应引起海洋管理界的高度关注。
It is generally acknowledged that willingness-to-pay (WTP) estimates for environmental goods exhibit some degree of spatial variation. In a policy context, spatial variation in threatened and endangered species values is important to understand, as the benefit stream from policies affecting threatened and endangered species may vary locally, regionally, or among certain population segments. In this paper we present WTP estimates for eight different threatened and endangered marine species estimated from a stated preference choice experiment. WTP is estimated at two different spatial scales: (a) a random sample of over 5000 U.S. households and (b) geographically embedded samples (relative to the U.S. household sample) of nine U.S. Census regions. We conduct region-to-region and region-to-nation statistical comparisons to determine whether species values differ among regions and between each region and the entire U.S. Our results show limited spatial variation between national values and values estimated from regionally embedded samples, and differences are only found for three of the eight species. More variation exists between regions, and for all species there is a significant difference in at least one region-to-region comparison. Given that policy analyses involving threatened and endangered marine species can often be regional in scope (e.g., ecosystem management) or may disparately affect different regions, our results should be of high interest to the marine management community.