印江县村域“三生用地”的利用结构与空间格局.

【Objective】The present paper aimed to explore the structure and spatial distribution pattern of ecological-living-productive land with different function at village level and provide the decision basis for optimization of spatial structure and function of national land in Yinjiang County.【Method】 The diversity, dominance, combination number and combination type of ecological-living-productive land were calculated by taking 351 villages as analysis scales in Yinjiang County, dividing land type according to ecological, productive and living function and using quantitative geography and GPS. The structure and spatial distribution of ecological-living-productive land were analyzed by the indexes of level and location degree.【Result】(i) The diversity index of ecological-living-productive land was 0.81 and the diversity index was at the above-average level overall. The dominant index was 0.58 and the dominance was at the below-average level overall.(ii) The combination types of ecological-living-productive land concentrated upon the ecological-productive ecological double combination type, productive ecological-ecological double combination type and single ecological type.(iii) The utilization degree of ecological-living-productive land was 231 with a higher overall level.(iv) The location difference among types of ecological-living-productive land at village level was obvious. The ecological land in east and south region was of obvious location advantage. The productive-ecological land in north, northwest and central region was of obvious location advantage. The living ecological land in west region was of obvious location advantage.【Conclusion】The structure and spatial distribution of the lands with different function can be calculated by the quantitative geographic model, diversity index, dominance, combination number and type, utilization level and location degree in land utilization classification of ecological-living-productive land. [ABSTRACT FROM AUTHOR]