Emergy Assessment of a Wheat-Maize Rotation System with Different Water Assignments in the North China Plain
文献类型：期刊论文
| 作者 | Hu Shi ; Mo Xingguo ; Lin Zhonghui |
| 刊名 | ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2010 |
| 卷号 | 46期号:4页码:643-657 |
| 关键词 | WINTER-WHEAT ENERGY ANALYSIS EVAPOTRANSPIRATION SUSTAINABILITY INFORMATION REGION BRAZIL FARMS |
| 通讯作者 | Mo Xingguo |
| 合作状况 | 其它 |
| 英文摘要 | Sustainable water use is seriously compromised in the North China Plain (NCP) due to the huge water requirements of agriculture, the largest use of water resources. An integrated approach which combines the ecosystem model with emergy analysis is presented to determine the optimum quantity of irrigation for sustainable development in irrigated cropping systems. Since the traditional emergy method pays little attention to the dynamic interaction among components of the ecological system and dynamic emergy accounting is in its infancy, it is hard to evaluate the cropping system in hypothetical situations or in response to specific changes. In order to solve this problem, an ecosystem model (Vegetation Interface Processes (VIP) model) is introduced for emergy analysis to describe the production processes. Some raw data, collected by investigating or observing in conventional emergy analysis, may be calculated by the VIP model in the new approach. To demonstrate the advantage of this new approach, we use it to assess the wheat-maize rotation cropping system at different irrigation levels and derive the optimum quantity of irrigation according to the index of ecosystem sustainable development in NCP. The results show, the optimum quantity of irrigation in this region should be 240-330 mm per year in the wheat system and no irrigation in the maize system, because with this quantity of irrigation the rotation crop system reveals: best efficiency in energy transformation (transformity = 6.05E + 4 sej/J); highest sustainability (renewability = 25%); lowest environmental impact (environmental loading ratio = 3.5) and the greatest sustainability index (Emergy Sustainability Index = 0.47) compared with the system in other irrigation amounts. This study demonstrates that application of the new approach is broader than the conventional emergy analysis and the new approach is helpful in optimizing resources allocation, resource-savings and maintaining agricultural sustainability. |
| 资助信息 | Chinese National Nature Science Foundation 40671033;Chinese Ministry of Science and Technology 2006AA10Z228;State Key Lab of Resources and Environmental Information System A0619 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2011-03-07 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/2157]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Hu Shi,Mo Xingguo,Lin Zhonghui. Emergy Assessment of a Wheat-Maize Rotation System with Different Water Assignments in the North China Plain[J]. ENVIRONMENTAL MANAGEMENT,2010,46(4):643-657. |
| APA | Hu Shi,Mo Xingguo,&Lin Zhonghui.(2010).Emergy Assessment of a Wheat-Maize Rotation System with Different Water Assignments in the North China Plain.ENVIRONMENTAL MANAGEMENT,46(4),643-657. |
| MLA | Hu Shi,et al."Emergy Assessment of a Wheat-Maize Rotation System with Different Water Assignments in the North China Plain".ENVIRONMENTAL MANAGEMENT 46.4(2010):643-657. |
入库方式： OAI收割
来源：地理科学与资源研究所
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