Spatio Temporal Analysis Of Land Cover Based On Census Of Geographical Condition

Land cover change refers to the change of land cover type and the change of utilization mode.Change of land cover types is represented by area.Therefore,in the study of land cover change,it is necessary to study the area change of land cover type,and then study the spatial change and quality change.Based on the land cover vector data got from " Census and Monitor of Geographical Conditions” project,using the method of mathematical statistics and GIS analysis technology,the article researches spatial distribution characteristics and dynamic changes of land cover in Laishan district.The results obtained are as follows.(1)Through actual production practice,the land cover data of Laishan District in 2014 and 2016 were obtained.(2)Extract the altitude classification and slope classification information.And using these as a unit of factor,statistics and analysis the distribution law of land cover types.As a result,distribution of land cover types is affected by the terrain factors.Construction land cover types where humans live,are usually distributed in flat areas with low altitude and small slope.With increasing height and the slope of the land,land couver types gradually transformed into farmland and natural vegetation,and ultimately occupied the main advantage by the forest.(3)Based on two land cover data from 2014 and 2016 in Laishan District,using land cover type transfermation matrix and land use grade index,quantitative analysis the changes of land cover types over time and the causes of changes.