Onal Hayri, Briers Robert A
Department of Agricultural & Consumer Economics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Proc Biol Sci. 2002 Dec 7;269(1508):2437-41. doi: 10.1098/rspb.2002.2183.
Considering the spatial location of sites that are to be selected for inclusion in a protected reserve network may be necessary to facilitate dispersal and long-term persistence of species in the selected sites. This paper presents an integer programming (IP) approach to the reserve network selection problem where spatial considerations based on intersite distances are taken into account when selecting reserve sites. The objective is to reduce the fragmentation of preserved sites and design a compact reserve network. Two IP formulations are developed which minimize the sum of pairwise distances and the maximum intersite distance between all sites in the reserve network, respectively, while representing all species under consideration. This approach is applied to a pond invertebrate dataset consisting of 131 sites containing 256 species in Oxfordshire, UK. The results show that significant reductions in reserve fragmentation can be achieved, compared with spatially unrestricted optimum reserve selection, at the expense of a small loss in reserve efficiency.
考虑到在选择纳入保护区域网络的地点时，其空间位置对于促进物种在选定地点的扩散和长期存续可能是必要的。本文提出了一种整数规划（IP）方法来解决保护区网络选择问题，即在选择保护区地点时考虑基于地点间距离的空间因素。目标是减少保护区的破碎化并设计一个紧凑的保护区网络。开发了两种IP公式，分别最小化保护区网络中所有地点之间的成对距离之和以及最大地点间距离，同时涵盖所有考虑的物种。该方法应用于英国牛津郡一个包含131个地点、256个物种的池塘无脊椎动物数据集。结果表明，与空间不受限制的最优保护区选择相比，在牺牲少量保护区效率损失的情况下，可以显著减少保护区的破碎化。
