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CLC number: F062.2; S344.9

On-line Access: 2016-08-04

Received: 2015-06-24

Revision Accepted: 2015-11-09

Crosschecked: 2016-07-13

Cited: 0

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Fa-chun Guan


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Journal of Zhejiang University SCIENCE B 2016 Vol.17 No.8 P.628-639


Emergy assessment of three home courtyard agriculture production systems in Tibet Autonomous Region, China

Author(s):  Fa-chun Guan, Zhi-peng Sha, Yu-yang Zhang, Jun-feng Wang, Chao Wang

Affiliation(s):  Agriculture and Animal Husbandry College, Tibet University, Nyingchi 860000, China; more

Corresponding email(s):   guanfachun@163.com

Key Words:  Home courtyard agriculture, Raising Geese in Corn Field, Conventional Corn Planting, Pea-Wheat Rotation, Emergy, Sustainability

Fa-chun Guan, Zhi-peng Sha, Yu-yang Zhang, Jun-feng Wang, Chao Wang. Emergy assessment of three home courtyard agriculture production systems in Tibet Autonomous Region, China[J]. Journal of Zhejiang University Science B, 2016, 17(8): 628-639.

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publisher="Zhejiang University Press & Springer",

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%T Emergy assessment of three home courtyard agriculture production systems in Tibet Autonomous Region, China
%A Fa-chun Guan
%A Zhi-peng Sha
%A Yu-yang Zhang
%A Jun-feng Wang
%A Chao Wang
%J Journal of Zhejiang University SCIENCE B
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1500154

T1 - Emergy assessment of three home courtyard agriculture production systems in Tibet Autonomous Region, China
A1 - Fa-chun Guan
A1 - Zhi-peng Sha
A1 - Yu-yang Zhang
A1 - Jun-feng Wang
A1 - Chao Wang
J0 - Journal of Zhejiang University Science B
VL - 17
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.B1500154

home courtyard agriculture is an important model of agricultural production on the Tibetan plateau. Because of the sensitive and fragile plateau environment, it needs to have optimal performance characteristics, including high sustainability, low environmental pressure, and high economic benefit. emergy analysis is a promising tool for evaluation of the environmental-economic performance of these production systems. In this study, emergy analysis was used to evaluate three courtyard agricultural production models: raising Geese in Corn Fields (RGICF), conventional Corn Planting (CCP), and pea-Wheat Rotation (PWR). The results showed that the RGICF model produced greater economic benefits, and had higher sustainability, lower environmental pressure, and higher product safety than the CCP and PWR models. The emergy yield ratio (EYR) and emergy self-support ratio (ESR) of RGICF were 0.66 and 0.11, respectively, lower than those of the CCP production model, and 0.99 and 0.08, respectively, lower than those of the PWR production model. The impact of RGICF (1.45) on the environment was lower than that of CCP (2.26) and PWR (2.46). The emergy sustainable indices (ESIs) of RGICF were 1.07 and 1.02 times higher than those of CCP and PWR, respectively. With regard to the emergy index of product safety (EIPS), RGICF had a higher safety index than those of CCP and PWR. Overall, our results suggest that the RGICF model is advantageous and provides higher environmental benefits than the CCP and PWR systems.


方法:以两年(2012和2013)作为时间单元,记录期间各庭院生产体系物质的投入和产出。各生产体系中所有投入和产出的物质与各物质相对的转化系数即单位能值价值(UEV)相乘转换为太阳能值(sej),各物质的UEV统一全球驱动能值在15.20×1024 sej/year的基准上。利用"可新比例"划分各投入物质的可更新和不可更新的部分,并计算相应的能值指标(能值产出率、能值自给率、环境负载率、可持续性指标以及农产品安全指标等),从而通过能值指标和经济效益的分析来评价各庭院生产体系的生态与经济效益。


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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