<?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%">Labhar, M</style></author><author><style face="normal" font="default" size="100%">Tanghe, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recent evolution of the Jbel Hebri forest (Western Middle Atlas, Morocco)</style></title><secondary-title><style face="normal" font="default" size="100%">BELGIAN JOURNAL OF BOTANY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">areial photograph</style></keyword><keyword><style  face="normal" font="default" size="100%">forest evolution</style></keyword><keyword><style  face="normal" font="default" size="100%">photogrammetry</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetation structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year></dates><publisher><style face="normal" font="default" size="100%">SOC ROYAL BOTAN BELGIQUE</style></publisher><pub-location><style face="normal" font="default" size="100%">NIEUWELAAN 38, B-1860 MEISE, BELGIUM</style></pub-location><volume><style face="normal" font="default" size="100%">131</style></volume><pages><style face="normal" font="default" size="100%">13-22</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This study deals with the different aspects of forest evolution on the Jbel Hebri mountain ranges. On the basis of a comparative aerial photograph analysis (1962 and 1987 missions) completed by photogrammetry and field observations, the vegetation structure and its succession stages have been recognized. Although the total forest area remains unchanged, the physiognomic stages of identified communities (Cedrus atlantica forest; Quercus rotundifolia forest; mixed forest with Cedrus atlantica and Quercus rotundifolia) show heterogenous evolution. Depending on species and forest components we note paradoxal evolutionary tendencies. Systematic degradation due to harvesting and resource overuse is locally observed beside regenerated and densified parts. Therefore, the system dynamics reflects the locally variable factors such as soil hydrology and human impact.</style></abstract><notes><style face="normal" font="default" size="100%">APS</style></notes><research-notes><style face="normal" font="default" size="100%">APS</style></research-notes></record><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%">Vilar, L</style></author><author><style face="normal" font="default" size="100%">Polo, L</style></author><author><style face="normal" font="default" size="100%">Planella, D</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Los alcornocales de la provincia de Girona.</style></title><secondary-title><style face="normal" font="default" size="100%">Scientia gerundensis</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">cork oak grove</style></keyword><keyword><style  face="normal" font="default" size="100%">ecological typification</style></keyword><keyword><style  face="normal" font="default" size="100%">forest evolution</style></keyword><keyword><style  face="normal" font="default" size="100%">Girona country</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1989</style></year></dates><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">143-151</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A first attempt to typify the ecology of cork oak in Girona country (NE part of Iberian Peninsula) is done. The evolution of forest cork oak grove's areas in recent decades is given. We found that it is in regression and it would be necessary urgent actions to recuperate it.</style></abstract></record></records></xml>