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cje ›› 2005, Vol. ›› Issue (7): 817-822.

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Analysis on driving force of China's cultivated land loss

YAN Yan1,2, ZHAO Jingzhu1, WANG Yanchun1,2, LUO Qishan1,2   

  1. 1. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-11-23 Revised:2005-03-17 Online:2005-07-10

Abstract: The conflict between population and cultivated land resources is a big hindrance to China's sustainable development.Persistent increase of the population and decrease of cultivated land have become a potential and thremendous treat to national food security and sustainable development.The analysis of data from the national-wide land survey (1996) and annual land-use change survey showed that the situation of cultivated land resources in China was under great tension.Cultivated land possession per capita was very scanty.General quality of cultivated land was poor,and productive capacity was low.Spatial distribution of cultivated land was uneven.Exploitable and feasible land resources to reclaim were scarse.Direct causes of cultivated land decrease included the return to pasture form cultivated land,the adjustment of agriculture structure,construction and natural hazards,among which,construction and natural hazards were the most dangerous menaces causirg permancent cultivated land loss.From the view of society-economic-nature complexity ecosystem,the driving mechanism and relationships among driving factors,such as population,society,economy,natural environment and policy were discussed,with the future cultivated land situation primarily predicted.Advices to improve cultivated land conservancy,food security and sustainable development were put forward.

Key words: Soil moisture, Wheat with specialized end-uses, Photosynthetic characteristics, Yield

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