| The agricultural system of Wuwei is a typical agricultural meta-ecosystem of mountain, oasis, desert in north-west China. The system reflects the typical farming-pastoral nature-society function characteristics of the ecosystem.Based on present situation of agricultural development of Wuwei and coupling theory of agro-grassland system, this paper studied the agricultural system optimization model of Wuwei. The key of development of agricultural ecosystem in Wuwei should be "Protection of water source in south, Prevention of wind and sand in north, Development of Oasis in midle". Through the emergy theory. The paper studied how to establish the agricultural coupling system of mountain, oasis and desert in Wuwei. There are the four optimization models in the agricultural system in Wuwei. The fourth model is the best pattern.Finally, the coupling pattern and the development potential of the agricultural coupling system of mountain, oasis and desert in Wuwei were presented in this paper. |
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