Qian Zhang & Xiangzheng Deng, Chinese Academy of Sciences, Beijing, China

Presentation Title: Agricultural land loss and urbanization in China: Analysis from the perspective of land competition




Growing competition for finite land resources is reshaping land cover and land-use in China. Previous studies indicate that China's urban development subsumed a large amount of high quality agricultural land in the past two decades. Simultaneously, an almost equivalent amount of agricultural land has been reclaimed, but the quality of newly reclaimed land is relatively low. Apparent conflict between urbanization and agricultural production brought increasing pressure on high quality agricultural land. Given the rapid urbanization trend in China, where are the optimal places for urbanization? Should we urbanize fertile agricultural land? How can we coordinate the conflict of land use?

 Policy/Practice Implications of Research

Indicators of land quality along with quantity should be included for the protection of agricultural land resources and the development of land management policies.

Knowledge Gaps and Needs

Should trans-regional agricultural land area/productivity be balanced within individual provinces? This must be determined with the aid of land-use efficiency analysis including spatial variation evaluation of gains and losses for converting land from agricultural to urban use.

There is a need for improving how the potential productivity of agricultural land is calculated as well as how the efficiency/gains of urban land expansion, and the spatial variation of gains and losses for those areas converted from agricultural to urban use are evaluated.