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学科主题: 地理学::自然地理学
题名: Emergy assessment of three home courtyard agriculture production systems in Tibet Autonomous Region, China
作者: Guan, FC (Guan, Fa-chun)1, 2; Sha, ZP (Sha, Zhi-peng)1; Zhang, YY (Zhang, Yu-yang)1; Wang, JF (Wang, Jun-feng)1; Wang, C (Wang, Chao)1
通讯作者: Guan, FC
刊名: JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B
发表日期: 2016
DOI: 10.1631/jzus.B1500154
卷: 17, 期:8, 页:628-639
收录类别: SCI
合作性质: 国内
文章类型: Article
英文摘要: 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.
语种: 英语
WOS记录号: WOS:000381455000007
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7645
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Tibet Univ, Agr & Anim Husb Coll, Nyingchi 860000, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China

Recommended Citation:
Guan, FC ,Sha, ZP ,Zhang, YY ,et al. 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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