| Evolution pattern of the coupling productivities in agro-ecosystems of typical counties in Mu Us Sandy Land——A case study of Yuyang District |
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| DOI：10.7606/j.issn.1000-7601.2010.01.33 |
| Key Words: Mu Us Sandy Land agro-ecosystem coupling productivity harmonious development |
| Author Name | Affiliation | | KANG Furen | Department of Life Sciences, Yulin College, Yulin, Shaanxi 719000, China | | ZHU Mingqiang | Department of Life Sciences, Yulin College, Yulin, Shaanxi 719000, China
College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China | | HU Binghui | College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China | | SHANG Aijun | Department of Life Sciences, Yulin College, Yulin, Shaanxi 719000, China | | BU Yaojun | Department of Life Sciences, Yulin College, Yulin, Shaanxi 719000, China |
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| Abstract: |
| According to the actual productivities of fragile agro-ecosystems in Mu Us Sandy Land and with Yuyang District, a typical county there, as its subject, the study investigated the evolution pattern in the primary productivity, secondary productivity and the coupling degree between farming and animal-raising in typical regions of Mu Us, following the coupling theory about compound ecosystem and the energy theory and using relevant analytical methods. To draw a conclusion in agro-ecosystems coupling degree between farming and animal raising, three phases were divided in the typical regions of Mu Us: the complementary and synergistic phase, the interaction and proliferation phase, and the equilibrium and stabilization phase. In Yuyang, it lied in complementar
y and synergistic phase before 1995, in the interaction and proliferation phase during 1995 to 2005, and in the equilibrium and stabilization phase after 2005. It put forward the coupling concept of agro-ecosystems, methods and countermeasures to promote the evolution and productivity of their agro-ecosystems and to optimize the arrangement of their resources in typical regions of Mu Us. |
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