Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jenvman.2008.02.013 |
Agriculture adjustment, land-use transition and protected areas in Northwestern Argentina | |
Izquierdo, Andrea E.1; Grau, H. Ricardo2 | |
通讯作者 | Izquierdo, Andrea E. |
来源期刊 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
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ISSN | 0301-4797 |
EISSN | 1095-8630 |
出版年 | 2009 |
卷号 | 90期号:2页码:858-865 |
英文摘要 | Land-use change is the main component of regional environmental change, while protected areas represent a direct land use policy to prevent its potentially negative effects on biodiversity and environmental services. We combined an analysis of trends in land use and human demography with trends in creation of protected areas during the last three decades in northwestern Argentina, a subtropical region including a wide range of environments. The eighty nine administrative analysis units of the region were classified into four ecological groups based on their percentage of cover by the six eco-regions of the study area: (1) "Dry valleys": dominated by Middle-elevation deserts; (2) "Highlands", dominated by High-elevation alpine zones and plateaus: (3) "Humid ecosystems", dominated by Foggy grasslands and Humid forests, and (4) "Dry forests". Between 1970 and 2002, human population became concentrated in urban areas and land use trends varied greatly among the four ecological groups. Agricultural area decreased in the Highlands and increased in the other regions, particularly in the Dry forests. Domestic animals decreased in Humid ecosystems, Highlands and the Dry valleys: and remained constant in the Dry forests. Several protected areas were created, but most of them were established in regions undergoing a decreasing intensity of land use. Overall, the analysis shows that agricultural production is becoming concentrated in the areas more suitable for modern agriculture while marginal agriculture areas and, particularly, extensive grazing are decreasing. The creation of protected areas reflects the decreasing opportunity costs of marginal areas and is failing to protect the eco-regions most threatened by current land-use trends. (C) 2008 Elsevier Ltd. All rights reserved. |
英文关键词 | Eco-regions Ecosystems recovery GAP analysis Land-use change Land-use transition |
类型 | Article |
语种 | 英语 |
国家 | Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000261895500020 |
WOS关键词 | FOREST TRANSITION ; TROPICAL DEFORESTATION ; MIGRATION ; GLOBALIZATION ; ECOSYSTEMS ; AMAZON |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/161467 |
作者单位 | 1.Univ Nacl Tucuman, Lab Invest Ecol Yungas, RA-4107 San Miguel De Tucuman, Argentina; 2.Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina |
推荐引用方式 GB/T 7714 | Izquierdo, Andrea E.,Grau, H. Ricardo. Agriculture adjustment, land-use transition and protected areas in Northwestern Argentina[J],2009,90(2):858-865. |
APA | Izquierdo, Andrea E.,&Grau, H. Ricardo.(2009).Agriculture adjustment, land-use transition and protected areas in Northwestern Argentina.JOURNAL OF ENVIRONMENTAL MANAGEMENT,90(2),858-865. |
MLA | Izquierdo, Andrea E.,et al."Agriculture adjustment, land-use transition and protected areas in Northwestern Argentina".JOURNAL OF ENVIRONMENTAL MANAGEMENT 90.2(2009):858-865. |
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