| The versatility of land use is the foundation of national spatial planning,coordination and allocation.According to the theory of ecosystem services and landscape function synthesis,land functions are divided into three classification systems of production,life and ecology.The study of sustainable development is of great significance.This article starts from the perspective of the " Production-Living-Ecological " function of land and space resources,taking Shaanxi Province as an example,based on the results of the three-phase land use change survey database in 2005,2010,and 2015,and adopting a three-level assignment system for various types of land use Identify the functions of Shaanxi Province,and obtain the spatial and temporal distribution patterns and characteristics of production,living,and ecological space in Shaanxi Province,and analyze the dynamic changes of the " Production-Living-Ecological " land in Shaanxi Province during the study period.Finally,based on the gray system forecasting method,time series analysis method,regression analysis method and other methods,the model was established to predict the demand for various types of land in Shaanxi Province in 2025 and put forward optimization suggestions.The main conclusions of the study are as follows:(1)The “Production-Living-Ecological " space in Shaanxi Province is mainly distributed in the area below 1800 m above sea level,and is evenly distributed on the slope.The living and production space is greatly affected by the topography.The soil-forming parent material of the production land is sand shale wind.It is mainly composed of chemical compounds,the yellow loam soil is the main soil type,the loess in the living land is the main soil parent material,the loess soil is the main soil type,the ecological land is the largest proportion of sand shale weathering and sand shale,and the soil is yellow brown soil Mainly;living space is distributed more along the river.(2)As of the end of 2015,the province’s production space area is 145,900 square kilometers,living space is 0.4 million square kilometers,and ecological space is 191,700 square kilometers.Among them,Yulin City and Yan’an City have the largest production and ecological land area,and Tongchuan City and Xi’an City have the smallest area.Among the residential land areas,Xi’an City and Xianyang City occupy the largest area,and TongchuanCity has the smallest.During the study period,the area of ??production space in Yan’an City and Hanzhong City increased significantly;the living space and ecological space in Yulin City increased the most,while the production space decreased greatly;the ecological space in Yanan City and Hanzhong City decreased the most.The functional level of the "life" space shows a downward trend.(3)Shaanxi province’s " Production-Living-Ecological " space optimization should pay attention to adjusting the agricultural structure in order to increase the grain output and increase the degree of industrial aggregation to establish an industrial cluster;the living space should optimize the living environment of urban and rural residents,and do a good job in infrastructure construction;In the ecological space,we will increase the intensity of land remediation projects,reduce human interference,strengthen the optimization of the urban environment,and create green ecological homes. |
