|
Forest transition refers to a geographic theory describing a reversal or turnaround in land-use trends for a given territory from a period of net forest area loss (i.e., deforestation) to a period of net forest area gain.〔Mather, A.S. 1992. The forest transition. ''Area'' 24(4): 367-379〕〔Walker, R. 1993. Deforestation and Economic Development. Canadian Journal of Regional Science 16(3): 481-497.〕〔Grainger, Alan. 1995. The forest transition: an alternative approach. ''Area'' 27(3): 242-251〕〔Mather, A.S. and C.L. Needle. 1998. The forest transition: a theoretical basis. ''Area'' 30(2): 117-124〕〔Rudel, Thomas K. 1998. Is there a forest transition? Deforestation, reforestation, and development. ''Rural Sociology'' 63(4): 533-552〕〔Perz, Stephen G. 2007. Grand theory and context-specificity in the study of forest dynamics: forest transition theory and other directions. ''Professional Geographer'' 59(1): 105-114〕〔Meyfroidt, P., Lambin, E.F. 2011. Global Forest Transition: Prospects for an End to Deforestation. ''Annual Review of Environment and Resources 36: 343-371〕 The term "landscape turnaround" has also been used to represent a more general recovery of natural areas that is independent of biome type.〔〔Walker, R. 2011. The scale of forest transition: Amazonia and the Atlantic forests of Brazil. ''Applied Geography'' 32(1): 12-20〕 Forest recovery resulting in net increases in forest extent can occur by means of spontaneous regeneration, active planting, or both.〔Rudel, Thomas K., Oliver T. Coomes, Emilio Moran, Frederic Achard, Arild Angelsen, Jianchu Xu, and Eric Lambin. 2005. Forest transitions: towards a global understanding of the land use change. ''Global Environmental Change''. 15: 23-31〕 Forest transitions are associated with socio-economic transformations towards increased industrialization and urbanization. Other conditions leading to the abandonment of agricultural land (e.g., war and environmental legislation) have been found to play important roles in some cases. The different processes through which forest transitions occur are contingent upon the local socioeconomic and ecological contexts. Although some generic processes can be identified, countries do not necessarily experience a regular pattern of forest cover changes with time or development, and the causes and outcomes of forest transitions vary.〔〔 Studies of forest transitions have been conducted for several nations as well as sub-national regions.〔 Territories reported to have experienced forest transitions after the onset of industrialization include Bangladesh, China, Costa Rica, Cuba, Denmark,〔Mather, A.S., C.L. Needle, and J.R. Coull. 1998. From resource crisis to sustainability: the forest transition in Denmark. ''Int J Sust Dev World'' 5(3): 182-193〕Canada,〔 Dominican Republic,〔Aide, T. Mitchell and H. Ricardo Grau. 2004. Globalization, migration, and Latin American ecosystems. ''Science'' 305(5692): 1915-1916〕 El Salvador,〔Hecht, Susanna B., Susan Kandel, Ileana Gomes, Nelson Cuellar, and Herman Rosa. 2006. Globalization, forest resurgence, and environmental politics in El Salvador. ''World Development'' 34(2): 308-323〕 France,〔〔Mather, A.S., J. Fairbairn, and C.L. Needle. 1999. The course and drivers of the forest transition: the case of France. ''Journal of Rural Studies'' 15(1): 65-90〕Greece,〔 Gambia, Hungary, Ireland, Italy, Japan, Morocco, Norway, New Zealand, Portugal, Puerto Rico,〔〔〔Rudel, Thomas K., Marla Perez-Lugo, and Heather Zichal. 2000. When fields revert to forest: development and spontaneous reforestation in post-war Puerto Rico. ''Professional Geographer'' 52(3): 386-397〕〔Grau, H. Ricardo, T. Mitchell Aide, Jess K. Zimmerman, John R. Thomlinson, Eileen Helmer, and Xioming Zou. 2003. The ecological consequences of socioeconomic and land-use changes in postagricultural Puerto Rico. ''Bioscience'' 53(12): 1159-1168〕 Rwanda, Scotland,〔Mather, A.S. 2004. Forest transition theory and the reforesting of Scotland. ''Scottish Geographical Journal'' 120: 83-98〕 South Korea, Spain, Switzerland,〔〔Mather, A.S. and J. Fairbairn. 2000. From floods to reforestation: the forest transition in Switzerland. ''Environment and History'' 6(4): 399-421〕 the United States,〔 the United Kingdom,〔 and Vietnam.〔Meyfroidt, P. and Lambin, E. F. 2008. Forest transition in Vietnam and its environmental impacts. ''Global Change Biology'' 14(6): 1319-1336.〕〔Meyfroidt, Patrick and Eric F. Lambin. 2007. The causes of the reforestation in Vietnam. ''Land Use Policy'', 25(2): 182-197〕 Furthermore, forest-transition dynamics have been documented for regions within Brazil,〔〔Perz, Stephen G. and David L. Skole. 2003. Secondary forest expansion in the Brazilian Amazon and the refinement of forest transition theory. ''Society and Natural Resources'' 16: 277-294〕〔Baptista, Sandra R. and Thomas K. Rudel. 2006. A re-emerging Atlantic forest? Urbanization, industrialization and the forest transition in Santa Catarina, southern Brazil. ''Environmental Conservation'' 33(3): 195–202〕Ecuador,〔Rudel, Thomas K., Diane Bates, and Rafael Machinguiashi. 2002. A tropical forest transition? Agricultural change, out-migration, and secondary forests in the Ecuadorian Amazon. ''Annals of the Association of American Geographers'' 92(1): 87-102〕 and Mexico.〔Klooster, Dan. 2003. Forest transitions in Mexico: institutions and forests in a globalized countryside. ''Professional Geographer'' 55: 227-237〕〔Bray, David B. and Peter Klepeis. 2005. Deforestation, forest transitions, and institutions for sustainability in southeastern Mexico, 1900-2000. ''Environment and History'' 11(2): 195–223〕 The environmental effects of these forest transitions are very variable, depending on whether deforestation of old-growth forests continue, the proportions and types of tree plantations versus natural regeneration of forests, and the location and spatial configuration of the different types of forests.〔 The findings of returning forests in these widespread studies raise questions about the prospects of a worldwide forest transition, particularly given ongoing processes of forest loss in many parts of the world.〔〔〔Kauppi, Pekka E., Jesse H. Ausubel, Jingyun Fang, Alexander S. Mather, Roger A. Sedjo, and Paul E. Waggoner. 2006. Returning forests analyzed with the forest identity. Proceedings of the National Academy of Sciences of the United States of America 103(46): 17574–17579〕 In other words, can the global extent of forests be expected to reach a turning point in the future, reversing the current trend of overall forest decline towards overall forest expansion? Studies showed that given an increased competition for productive land between different land uses, a global forest transition would require major policy and technological innovations as well as shifts in demands for fiber, fuel, and food, and that these changes cannot be taken for granted.〔 ==See also== * Kuznets curve 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Forest transition」の詳細全文を読む スポンサード リンク
|