Analysis Of Spatio-temporal Changes Of Land Use Based On Normalized Survey Data

Land is the material basis for human survival and sustainable development of society.Land survey has always been attached great importance to land and resources in China.China has carried out the first survey of land use and the survey of the second land use status,and carried out the annual change survey on the basis of the survey of the status of land use.The main purpose of the survey of land use status and the survey of annual change is to find out the type,quantity,distribution,utilization and ownership of land,and to establish the database of land use renewal.This paper puts forward the investigation concept of normalization investigation.The investigation process of the normalization investigation is similar to the annual change survey.It takes quarterly as a unit to investigate the change pattern spot,focusing on the daily supervision of land use and the timely regulation of illegal plots,without updating the database.With the in-depth investigation of normalization,the temporal and spatial changes of normalization survey data also store a lot of information to be excavated.Taking Qingdao as the research object,this paper analyzes the normalization data of Huangdao District of Qingdao from 2016 to 2017 and the status map of land use in 2016,and explores the temporal and spatial characteristics and rules of data spatio-temporal change analysis.In this paper,based on the normalization survey data and the land use database as the research data,the source,characteristics,change characteristics and change requirements of the research data are analyzed,and a normalization investigation database is set up in combination with the storage mechanism of the MySQL database to realize the comprehensive management of the survey data,the land use space data and the business data.With the help of SQL and ARCGIS tools,the spatial analysis and spatio-temporal statistical analysis are applied to analyze the spatio-temporal changes of the normalized survey data,such as location entropy,time series snapshot statistics,change traffic statistics,Markov model prediction and hot spot detection and so on.The method of spatial information visualization is adopted.The analysis results are expressed in the form of maps,and the spatial and temporal characteristics and laws of the spatio-temporal variation of land use data in the land use present structure,the dynamic degree of land use,the flow direction of land use type with time and space change,and the aggregation degree of spatio-temporal change in the hot spot detection and analysis are analyzed,which will be further better in the future.It will provide technical services and support for land use structure adjustment and land use planning.