Under The Background Of Rapid Urbanization Of Dalian Pulandian Space-time Evolution Of Land Ecological Security And Its Influence Factor Analysis

Land is the survival and development of human society material foundation and the safeguard,development and evolution of human society plays a vital role.With the development of Chinese economy,the pace of urbanization accelerated,increasing the strength of land development and utilization of human,In economic development and the deepening contradiction between human and land,especially as the coastal areas of development intensity is relatively large,the development of the land evolution effects for the development of the economy,more and more prominent.In this paper,using the CA-Markov model integrated research of coastal areas under the background of rapid urbanization space-time law of development and evolution of land ecological security mechanism,And according to the laws of the evolution simulation to predict the future development trends of land ecological security,provide the basis for the future of land planning and land policy.Based on the research of the coastal area,this paper established "Driving Force(Driving Force)-Pressure(Pressure)-State(State)-effect(Impact)-Response(Response)" index system,Comprehensive PuLanDian actual condition to select indicators,using Arcgis platform grid handling unit evaluation,State of regional land ecological security are obtained,through the evolution of the state SPSS20.0 software of principal component analysis,Analysis of the factors that result in the change of land ecological security status.Using IDRISI software Arcgis database,simulate the future trend of the evolution of land ecological security,the following conclusions through the following steps:1)pulandian land ecological security status between 2005 and 2015 shows a tendency of improving step by step,in 2010,for line,In 2010,before the evolution of the land ecological security in a positive state,after 2010 years in a relatively positive state of evolution,the overall trend is rising land ecological safety zone and the unsafe area more unrest in the relative reduction.2)About PuLanDian city land ecological evolution laws of unsafe area,mainly river basins or distribution along main traffic roads,banded distribution of apparent,And in 2020 a zonal distribution characteristics of attachment.3)principal component analysis results: in the rapid urbanization dynamic evolution economic factors impact on the land ecological safety is greater,the second is the natural factor,the economic factors in development of GDP and industrial waste discharge capacityas the main body;Main impact factor for natural disasters in the natural factor and vegetation coverage;Social and cultural factors proportion is not big.Economic factors are still the main factors influencing the regional space-time evolution.