Dynamic Analysis And Adjustment Strategy Of Land Use Landscape Pattern In Luanchuan County

This article selects Landsat remote sensing images from 1993,2007 and 2017 in Luanchuan County,Henan Province.With the support of Arc GIS 10.2,ENVI5.3 and other geographic information system application software,the basic theories and methods related to landscape ecology are applied.Fragstats4.2 and IDRISI17 software,combined with landscape pattern index analysis method and CA-Markov model analysis method,analyzed and simulated the dynamic evolution process of land use landscape pattern in Luanchuan County.The main conclusions are as follows:(1)Through the analysis of the landscape pattern index of Luanchuan County in the third phase,the landscape pattern evolution from 1993 to 2017 mainly showed that: the area of forest land and construction land continued to increase,the area of grassland,cultivated land and unused land continued to decrease,and the area of water area increased first and then decreased.From 1993 to 2007,the comprehensive utilization of land resources was abundant,and the degree of separation further increased;from 2007 to 2017,the fragmentation of landscape patches gradually decreased,the patches gradually tended to integrate,and the shape also tended to be regular,and the dominance of the landscape gradually gained Promote.(2)The main driving factors for the evolution of land use landscape pattern can be summarized into two categories: natural factors and human factors.Among the natural factors,this paper mainly explores the influence of elevation,slope,water system and other factors on the landscape pattern change direction of Luanchuan County through buffer analysis.Human factors analyze their impact from three aspects: population change,industrial structure and urban planning and construction.Combining the analysis of the driving factors of the two aspects,the landscape pattern of the study area should be more ecological and natural,and the trend of coordinated development of various landscape types.(3)Using IDRISI17 software,the CA-Marcov model method was used to simulate and predict the landscape pattern of Luanchuan County in 2027.From the simulation results,the landscape area of cultivated land,grassland and water in Luanchuan County has increased in 2027.Although the landscape area of forest land has decreased in recent years,it is still the main dominant landscape.The landscape types of construction land and unused land have not changed.The overall degree of separation of the landscape is at a low level,the degree of aggregation increases,the number of patches decreases,the degree of landscape fragmentation decreases,and the landscape patches tend to integrate,which can better form a zoning of landscape types,develop balanced,and meet the expected development requirements.(4)Analyze the main problems in the evolution of the landscape pattern in Luanchuan County.There are cities and towns that develop large-scale occupied farmland landscapes,and the landscape dominance of grasslands and waters is gradually decreasing.Combining the simulation prediction results,an adjustment strategy is proposed:(1)adjusting the landscape layout and rationally arranging landscape functional zoning;(2)promoting land reclamation to balance the relationship between urban development and cultivated landscape;(3)improving the superiority of grassland and water landscapes and strengthening management;(4)utilization Scientific and technological means and 3S technology monitor the evolution of the landscape pattern in the study area in real time and provide timely guidance.