Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.ecolecon.2018.09.015 |
Energy Flow and Feedback Control in Ecological and Economic Food Systems Understanding Strengths in One System Helps Clarify a Weakness in the Other | |
Jordan, Carl F. | |
2019-02-01 | |
发表期刊 | ECOLOGICAL ECONOMICS
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ISSN | 0921-8009 |
EISSN | 1873-6106 |
出版年 | 2019 |
卷号 | 156页码:91-97 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Feedback loops stabilize energy and nutrient flow in ecological food webs and the ecosystems in which they are embedded. In these feedback loops, flow of energy propels nutrients from autotrophs through food chains to decomposers where the nutrients recycle back to autotrophs. An increase or decrease in ecosystem level flows caused by environmental variations triggers an increase or decrease of the populations that comprise the food webs. Conversely, changes in populations cause proportional changes in ecosystem level flows of energy and nutrients, resulting in stability at a different metastable state. In contrast to ecological systems, economic food systems are inherently unstable because they lack effective feedback control. There is inherent system instability caused by incompatibility between the economic system's need to increase farm yield, and the biophysical controls that limit such increase. Money supply that stimulates economic expansion does not generate feedback that could ensure stability of economic food systems and the farms on which they depend. |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000453493000009 |
WOS关键词 | CYBERNETIC NATURE ; COMMUNITY ; POPULATION ; EFFICIENCY ; PRODUCERS ; FOREST |
WOS类目 | Ecology ; Economics ; Environmental Sciences ; Environmental Studies |
WOS研究方向 | Environmental Sciences & Ecology ; Business & Economics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/15846 |
专题 | 资源环境科学 |
作者单位 | Univ Georgia, Odum Sch Ecol, Athens, GA 30602 USA |
推荐引用方式 GB/T 7714 | Jordan, Carl F.. Energy Flow and Feedback Control in Ecological and Economic Food Systems Understanding Strengths in One System Helps Clarify a Weakness in the Other[J]. ECOLOGICAL ECONOMICS,2019,156:91-97. |
APA | Jordan, Carl F..(2019).Energy Flow and Feedback Control in Ecological and Economic Food Systems Understanding Strengths in One System Helps Clarify a Weakness in the Other.ECOLOGICAL ECONOMICS,156,91-97. |
MLA | Jordan, Carl F.."Energy Flow and Feedback Control in Ecological and Economic Food Systems Understanding Strengths in One System Helps Clarify a Weakness in the Other".ECOLOGICAL ECONOMICS 156(2019):91-97. |
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