An ecological-living-industrial land classification system and its spatial distribution in China

Rapid development of industrialization,urbanization and economy causes tension in the human-land relationship. To take into account the relationship between food security,economic development and ecological protection,one needs to coordinate contradictions and conflicts between different functional land types. The current land use classification system emphasizes the industrial and living function of lands but insufficiently considers ecological function. This study built an Ecological-living-industrial Land Classification System from the perspective of land functions incorporating the concept of ecological land. The new land classification is more suitable to coordinate ecological,living and industrial land spaces. The Ecological-living-industrial Land Classification System includes three levels. The first level includes four major types:ecological regulation land,ecological-industrial land,industrial land,and living-industrial-ecological land.The second level subdivides dominant functions into 15 functional land categories. The third level is based on land cover types. According to zoning and re-classification,we extracted ecological-living-industrial land and their spatial distribution at a national scale. The area of ecological regulation land,ecological-industrial land,industrial land,and living-industrial land area are 6 037 000km2,1 353 800km2,2 001 900km2 and 207 300km2respectively;accounting for62.89%,14.10%,20.85% and 2.16% of total area,respectively. Ecological land are mainly locate in central and western China,ecological-industrial land reflects obvious regional differentiation,and industrial-ecological land and living-industrial land are concentrated in eastern China.