Proceedings of the 2015 AASRI International Conference on Circuits and Systems

Emergy Evaluation of a Dairy-mushroom Ecosystem in Miyun Reservoir Catchment of Beijing

Authors
Hu Yanxia
Corresponding Author
Hu Yanxia
Available Online August 2015.
DOI
https://doi.org/10.2991/cas-15.2015.32How to use a DOI?
Keywords
emergy evaluation; diary-mushroom system; beijing miyun reservoir catchment.
Abstract
An ecological energetic evaluation is presented in this paper for the dairy-mushroom system in Beijing Miyun reservoir catchment in the year 2010. It developed a system diagram for the dairy and mushroom productions based on Odum’s unified measure. Conventional systems indices of the emergy yield ratio (EYR), emergy investment ratio(EIR), environmental load ratio(ELR) and environmental sustainability index(ESI) are introduced for congregated systems ecological assessment. The overall diary-mushroom system is shown with outstanding production competence compared with other agricultural systems in other regions. The mushroom subsystem is highly benefited from the cow subsystem by making use of cow excrements as materials, which can alleviate pollution caused by excessive piles up of cow manure and rain washing down to the groundwater. Compared with the subsystems, diary-mushroom agrocirculation system has higher yield raio, lower emergy investment ratio (EIR), and higher environmental sustainable index (ESI) value. In the long run, processes with a lower percent of purchased emergy are likely to be more sustainable, of which corn plantation, cow breeding and mushroom cultivation are not aparted and formed into a circulation chain. So the dariy-mushroom circulation system is one of a sustainable agricultural mode adapted for this water protection area and should be promoted.
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Proceedings
2015 AASRI International Conference on Circuits and Systems (CAS 2015)
Part of series
Advances in Computer Science Research
Publication Date
August 2015
ISBN
978-94-62520-74-5
ISSN
2352-538X
DOI
https://doi.org/10.2991/cas-15.2015.32How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Hu Yanxia
PY  - 2015/08
DA  - 2015/08
TI  - Emergy Evaluation of a Dairy-mushroom Ecosystem in Miyun Reservoir Catchment of Beijing
BT  - 2015 AASRI International Conference on Circuits and Systems (CAS 2015)
PB  - Atlantis Press
SN  - 2352-538X
UR  - https://doi.org/10.2991/cas-15.2015.32
DO  - https://doi.org/10.2991/cas-15.2015.32
ID  - Yanxia2015/08
ER  -