Effect of human disturbance on the structure and regeneration of forests in the Nevado de Toluca National Park, Mexico

查看全文 作　　者：Angel Rolando Endara [1]Agramont;Sergio Franco [1]Maass;Gabino Nava [1]Bernal;Juan Ignacio Valdez [2]Hernández;Todd [3]S.Fredericksen

机构地区：[1]Instituto de Ciencias Agropecuarias y Rurales(ICAR),Universidad Autónoma del Estado de México,Instituto Literario N°100,Col.Centro.PO.Box 50000.Toluca,México;[2]Colegio de Posgraduados,Carretera México-Texcoco,Km.36.5,Montecillo.PO.Box 56230,Texcoco,México;[3]School of Natural Sciences and Mathematics,Ferrum College,P.O.Box 1000,Ferrum VA 24088,USA

出　　处：《Journal of Forestry Research》索引2012年第23卷第1期,共6页

摘　　要：Sample plots were established in the principal forest types in the the Nevado de Toluca National Park, Mexico including those dominated by Pinus hartwegii, Abies religiosa, Quercus laurina and Alnus jorullensis. The vertical structure was defined by three strata in the coniferous forests and two strata in the broadleaved forests. Timber harvesting in Abies religiosa and Quercus laurina forests and fires generated by humans in Pinus hartwegii forests impeded the recruitment of saplings. Mature trees were also heavily impacted by logging in Pinus hartwegii forests. On the contrary, Alnus jorullensis forests were increasing due to the disturbance of Pinus and Quercus forests, as well abandoned crop lands within the park. A combination of logging, uncontrolled fire, and grazing appears to be compromising the recruitment of important tree species in this national park. These factors, together with human settlements, have also increased the proportion of early successional species. Changes in forest structure from human disturbance indicate a need to control these activities if conservation goals are not to be compromised. 关键词：森林类型国家公园人为干扰垂直结构墨西哥再生森林火灾人类住区

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Effect of human disturbance on the structure and regeneration of forests in the Nevado de Toluca National Park, Mexico

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