Spatiotemporal Evolution and Multi-Scenario Simulation of"Production-Living-Ecological"in Dalian City Based on PLUS Model
By constructing the spatial classification system of"Production-Living-Ecological",the paper explores and predicts the spatial and temporal evolution characteristics of"Production-Living-Ecological"space in Dalian City with the help of land use transfer matrix and PLUS model,and provides effective support for assessing the state of national land space and formulating coordinated development measures.The results showed that:①The"Production-Living-Ecological"in Dalian has remarkable versatility,and Main Production-Secondary Ecological-Tertiary living and Main Ecological-Secondary Production spatial distribution range is wide,accounting for about 40％and 30％respectively.②From 2000 to 2020,Main Living-Secondary Production and Main Ecological-Sec-ondary Production space increased by 592km2 and 491km2 respectively;Balanced Production and Ecological-Sec-ondary Living space decreased by 921km2;The remaining space is relatively stable,showing the law of first in-creasing and then decreasing.③ In 2030,the natural development scenario is relatively stable,and attention should be paid to the food security problems caused by the reduction of cultivated land;The ecological risk of economic priority scenario increases,and a monitoring mechanism needs to be established.Ecological protection scenario can improve the proportion of ecological space,but it needs to balance the structure of ecological elements and the overall benefits of economy,society and environment.The research can provide some reference for Dalian's terri-torial space planning.
"Production-Living-Ecological"spacespatial-temporal changesPLUS modelmulti-scenario simula-tionDalian City
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