China must protect high-quality arable land

Driving Forces of Arable Land Conversion in China

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Factors Influencing the Conversion of Arable Land to Urban Use and Policy Implications in Beijing, China

Rapid urban land expansion and the resulting arable land loss have put food security in China at risk. This paper investigates the characteristics and mechanism of arable land conversion in Beijing using a logistic model based on land-use data for 2001 and 2010. The results suggest that (1) arable land conversion tends to occur near built-up areas, city centers and major roads; (2) arable land ...

Arable Land Quality Assessment System Development and Its Application Based on ArcGIS Engine

The arable land quality assessment system is developed with Visual C++ coupled with ArcGIS engine. The system can provide basic functions of geographic information system, for example, map browsing, overlay analysis, and spatial interpolation. The program has both single-factor evaluation module and comprehensive evaluation module, which evaluate the land quality by field sampling data and othe...

Optimization of Sample Points for Monitoring Arable Land Quality by Simulated Annealing while Considering Spatial Variations

With China's rapid economic development, the reduction in arable land has emerged as one of the most prominent problems in the nation. The long-term dynamic monitoring of arable land quality is important for protecting arable land resources. An efficient practice is to select optimal sample points while obtaining accurate predictions. To this end, the selection of effective points from a dense ...

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