<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cerdá, Emilio</style></author><author><style face="normal" font="default" size="100%">Martı´n-Barroso, David</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Optimal control for forest management and conservation analysis in dehesa ecosystems</style></title><secondary-title><style face="normal" font="default" size="100%">European Journal of Operational Research</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">artificial plantation (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">cork oak woodlands</style></keyword><keyword><style  face="normal" font="default" size="100%">Forest management</style></keyword><keyword><style  face="normal" font="default" size="100%">holm oak woodlands</style></keyword><keyword><style  face="normal" font="default" size="100%">land use</style></keyword><keyword><style  face="normal" font="default" size="100%">natural regeneration</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2012///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S0377221712009411</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This paper presents a deterministic ﬁnite time horizon dynamic optimization model aimed to determine optimal paths for artiﬁcial plantations and natural regeneration of two main tree species in dehesa multiple use ecosystems, holm oak (Quercus ilex L.) and cork oak (Q. suber L.). Whilst dehesa forest sustainability problems associated to exhaustive use of grazing resources have been indirectly approached by European Union authorities, providing support for artiﬁcial plantations over treeless land, no mention is made to natural regeneration techniques. In this sense, the formulated model allows for natural regeneration of already established ageing stands as a complement or even a substitute of actual reforestation practices. The proposed methodology is neither designed to determine optimal rotation of tree species nor optimal decorticating or pruning cycles of cork oaks and holm oaks, respectively. Instead, this information enters the model exogenously through knowledge of region speciﬁc silvicultural cycles for those commercially relevant tree species, and the optimisation program acts as an optimal land use allocator and thus a practical tool for policy analysis purposes. In addition to existing cost beneﬁt analysis applications in dehesa ecosystems, the presented model allows in one side eﬃcient evaluation of long term management dynamics —thus oak woodlands sustainability can be tested for suﬃciently large time horizons—, and in the other, management decisions, instead of being forced through predeﬁned scenarios, correspond to the optimal actions a decision agent would take from the complete set of feasible possibilities given actual land use and tree age distributions.</style></abstract></record></records></xml>