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JOURNAL OF DESERT RESEARCH  2007, Vol. 27 Issue (1): 40-45    DOI:
沙漠与沙漠化     
Agriculture-Stock Production in Agro-Pastoral Interlaced Region in Northern China: Ⅱ. Basic Data and Model Application
ZHANG Qi-feng1, LI Zhen-shan1, WANG Tao2
1.Department of Environmental Engineering, Peking University, Beijing 100871, China; The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China; 2.Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
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Abstract  

A set of basic data for agriculture-stock production was acquired through careful integration and analysis of existing material from different sources such as various statistic departments of the governments and scientific studies. Many characteristics of agriculture-stock production can be unveiled by using data assisted by a group of hierarchical models built specially for agriculture-stock production. It was found out that the elastic coefficients of capital, effective labor and land productivity descend in turn. It means that capital gives the biggest share to development, and effective labor and land productivity give less. To the production function, the flow capital is more effective than the constant capital. With time going, the importance of the capital goes down and the other two factors begin more important. And effective labor is changing a lot to reflect the needs for knowledge in modern agriculture. Neiman is still in the period of increasing return to scale, while the increasing return becomes less. The use rate of land potential productivity varies within 0~0.4. The rate before 1980 is low and less fluctuated, which means that the agriculture-stock raising productivity is low and less need to land productivity in that period. The rate after 1980 is high and much more fluctuated. In this period, the percents of capital endowment go down and land productivity is more important. There is negative feedback between the flow capital and agriculture-stock raising production in agro-pastoral interlaced region; also negative feedback existed between economic system and natural system.

Key words:  agro-pastoral interlaced region      agriculture-stock production      basic data      model application      elastic coefficient      Neiman Banner     
Received:  29 August 2005      Published:  20 January 2007
ZTFLH:  S117  
Articles by authors
ZHANG Qi-feng
LI Zhen-shan
WANG Tao

Cite this article: 

ZHANG Qi-feng;LI Zhen-shan;WANG Tao. Agriculture-Stock Production in Agro-Pastoral Interlaced Region in Northern China: Ⅱ. Basic Data and Model Application. JOURNAL OF DESERT RESEARCH, 2007, 27(1): 40-45.

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http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2007/V27/I1/40

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