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DOI:	10.1371/journal.pone.0114561
论文题名:	Positive and Negative Feedbacks and Free-Scale Pattern Distribution in Rural-Population Dynamics
作者:	Concepción L. Alados; Paz Errea; Maite Gartzia; Hugo Saiz; Juan Escós
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-12-4
卷:	9, 期:12
语种:	英语
英文关键词:	Population size ; Population density ; Livestock ; Population growth ; Population dynamics ; Agriculture ; Rural areas ; Natural resources
英文摘要:	Depopulation of rural areas is a widespread phenomenon that has occurred in most industrialized countries, and has contributed significantly to a reduction in the productivity of agro-ecological resources. In this study, we identified the main trends in the dynamics of rural populations in the Central Pyrenees in the 20th C and early 21st C, and used density independent and density dependent models and identified the main factors that have influenced the dynamics. In addition, we investigated the change in the power law distribution of population size in those periods. Populations exhibited density-dependent positive feedback between 1960 and 2010, and a long-term positive correlation between agricultural activity and population size, which has resulted in a free-scale population distribution that has been disrupted by the collapse of the traditional agricultural society and by emigration to the industrialized cities. We concluded that complex socio-ecological systems that have strong feedback mechanisms can contribute to disruptive population collapses, which can be identified by changes in the pattern of population distribution.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0114561&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/19356
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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journal.pone.0114561.PDF（2404KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View 联系获取全文

作者单位:

Pyrenean Institute of Ecology (CSIC), Zaragoza, Spain;Pyrenean Institute of Ecology (CSIC), Zaragoza, Spain;Pyrenean Institute of Ecology (CSIC), Nuestra Señora de la Victoria s/n, Jaca, Huesca, Spain;Pyrenean Institute of Ecology (CSIC), Zaragoza, Spain;Department of Animal Production and Food Technology, Huesca Polytechnic School, Zaragoza University, Zaragoza, Spain

Recommended Citation:

Concepción L. Alados,Paz Errea,Maite Gartzia,et al. Positive and Negative Feedbacks and Free-Scale Pattern Distribution in Rural-Population Dynamics[J]. PLOS ONE,2014-01-01,9(12)

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