重庆市三生空间时空格局研究

Spatial-Temporal Patterns of"Production-Living-Ecological Space"in Chongqing

“三生空间”对于国土空间格局优化和生态文明建设具有重要意义。利用重庆市2005、2010、2015年3期土地利用数据,基于土地的主导功能,划分“三生”用地空间,并进行时空格局分析。构建“三生功能”评价指标体系,采用GIS空间分析与景观格局方法对2015年重庆市“三生功能”进行定量化刻画与分析。结果表明:1)重庆市“三生空间”以生态空间为主,生产空间次之,生活空间最少,“三生空间”时空分布和空间变化特征明显;2)生态空间景观受人类活动影响在持续的加强,景观破碎化程度在不断地增大,生产空间受人类活动影响在加强,生活空间扩张趋势明显,集聚度越来越大;3)2015年重庆市三生功能呈现出较强的空间分异性,其结果与定性分析吻合度较高。

The application of"Production-living-ecological space"(PLES)is of great significance to the optimization of land spatial pattern and the construction of ecological civilization.Based on the dominant function of land,this paper divided the land use space of PLES and analyzed the spatial-temporal pattern of PLES by using the land use data of Chongqing in 2005,2010 and 2015.Then,the evaluation index system of PLES was constructed,and the function of PLES of Chongqing in 2015 was quantitatively depicted and analyzed by using GIS spatial analysis and landscape pattern method.The results showed that 1)the ecological space was the main space,followed by the production space and the living space.The spatial and spatial distribution of the PLES were obvious.2)The impact of human activities on ecological space landscape strengthened continuously,and the degree of landscape fragmentation increased.The influence of human activities on the production space strengthened.In addition,the expansion trend of living space was obvious,and the concentration became larger and bigger.3)In 2015,production-living-ecological function in Chongqing showed a strong spatial differentiation,and the results were in good agreement with the qualitative analysis.