Multi-scale Composite Analysis And Optimization Of Landscape In Diked Area

Yangjiang water basin gently topography,lake overflow is numerous,since ancient times is the important area of the development of the dike paddy field in the south of anhui,Jin Baowei OS is located in the heart of the dike paddy field in the south of anhui,one thousand years of history development,in the long-term interaction relationship between population and land,gave birth to the unique characteristics of the local polder landscape and water network pattern,become one of the typical representative of the dyke in the south of anhui.However,under the background of rapid urbanization,OS internal settlement construction land expansion encroaches on natural space,lead to long-term harmonious relation between people and land tensions,inevitably affect the stability of the dyke internal landscape system,produce a series of serious ecological consequences,investigate its reason,mainly is the influence of human activities cause the dyke internal landscape composition,structure,pattern of not harmonious.Therefore,by studying the internal relation of the landscape composition and the influence of human activities on the landscape space of the polder area,we can optimize the landscape pattern and patch nesting in the polder area,so as to re-radiate the vitality and light and form a harmonious and stable landscape system in the polder area.Articles refer to part of the theory and method of landscape ecology,landscape inside the OS as a whole,the use of high-resolution remote sensing images and aerial photo,OS landscape patches by Envi5.3,Arc GIS10.5 software classification,recognition,extraction of linear corridor,through Fragstats4.2 quantitative measurement and statistical analysis,from the dyke overall space,OS linear corridor space,community settlement space three scales,analyze the characteristics of space landscape patches Mosaic pattern and landscape corridor network characteristics,This paper tries to reveal the present situation and existing problems of the whole patch,landscape corridor and community patch in the polder area,so as to make overall planning and optimization from different scales.Based on the multi-scale analysis of the internal landscape system in the polder area,it is found that the cultivated land landscape patch accounts for more than 50% of the total landscape patch.According to the matrix determination method in landscape ecology,the cultivated land landscape is the landscape matrix of the jinbaowei polder area and the dominant landscape in this area.At the same time,the production and life style in the diked area has a strong influence on the natural space,which is reflected in that most of the natural grassland and forest land are artificially transformed into farmland and scattered settlement land,which leads to the lack of corresponding grassland and forest land patches in the diked area,the patches are separated from each other,and the landscape fragmentation degree is high.In the linear landscape corridor,the river corridor occupies a higher proportion and has certain connectivity,while the hedge corridor occupies a lower proportion and is isolated from each other and lacks corresponding connection with the road corridor.At the level of community landscape patches,as the settlement center of Jinbaowei,Shuiyang Community has more construction land patches,and some unused land needs to be better utilized.In the four communities of Jinbaowei,patches of ecological grassland and forest land were lack of nesting,so patch adjustment was needed to carry out ecological restoration.Finally,in view of the quantitative analysis under the different scales of OS some problems arising from the landscape spatial structure,combined with the dyke natural terrain and the present situation condition,how to use the theory of landscape ecology,landscape ecological planning optimization way and method,put forward the corresponding optimization principle and the optimization goal,and from Jin Baowei overall landscape patches,landscape corridor construction,community groups from three aspects of landscape environment,put forward the corresponding optimization strategy,in order to the dyke construction development in harmony with the natural environment,the dyke landscape system more stable running,settlement environment more pleasant.Figure[40] Table[14] Refercence[84]...