Study On The Construction Of Ecological Network In Urumqi City Based On MSPA

Ecological land is an important part of the ecosystem and can maintain the stability and integrity of the ecosystem,so it is often regarded as an important habitat for living things.Under the background of rapid economic progress and the development of urbanization level,on the one hand,the interference degree of artificial ecological environment is increasing,which makes the urban ecological layout extensive and chaotic,reduces the connectivity between ecological land,and the problem of ecological land plaque fragmentation increases year by year,which can not give full play to the ecosystem function of the city,on the other hand,people’s demand for improving the ecological environment continues to improve,which puts forward new requirements for the construction of urban ecological environment.The construction of urban ecological network not only improves the connectivity between ecological land,so that the regional ecosystem is optimized and effectively managed.Therefore,this paper takes the theory and method of landscape ecology as the guide,takes Urumqi as the research area,uses the MSPA method(morphological spatial Pattern analysis method),the grid method,the GIS spatial analysis method,the connectivity analysis method and the minimum resistance model method,etc.,carries on the ecological land landscape pattern and the ecological network construction,And put forward the suggestion of optimizing ecological network.The main conclusions of the study are as follows:1)Analysis of spatial and temporal changes in land use.Aiming at the image data of Urumqi for 2000-2015 years,the supervision and classification were carried out,and it was learned that the construction land between 2000-2015 years was in a continuous expansion state,and its growth rate was the highest.Over a period of2000-2015 years,the variation of woodland,grassland,cultivated land and water area was not significant.The increase in the area of waters in 2015 was most pronounced,with the main source being the unutilized transfer;the unused land was mainly transferred to construction land,waters,grassland types,unused land and water,construction land,forest grassland between the most intensive conversion.2)Analysis of landscape pattern of ecological land.The main conclusions obtained from the change Analysis and expansion analysis of the Ecological Land Landscape Bureau in Urumqi are as: the core area types are mainly distributed in the mountainous areas of Shuimogou District and Urumqi County,the proportion of thetotal area of ecological land is more than 50 per cent,and the rest of the types are relatively small;the high value of plaque density appears to be distributed around the main construction land in the study area,and the fragmentation of MSPA landscape types increased in 2015,especially in bridging area and The shape of MSPA landscape type,such as feeder line,is irregular and the fragmentation is serious.3)Analysis of the change of ecological land safety pattern.According to the analysis results,it is found that the high and low safety zone of Urumqi is more concentrated,while the medium security level is mainly decentralized division.In 4periods,high and medium security changes were more obvious,and there was no significant change in the low safety zone.4)Ecological Network construction.The results show that the connectivity between ecological land in the study area is not good,and the number of corridors between the sources is also small,which indicates that the ecological land use pattern of the study area is not ideal,and it is necessary to strengthen the connection between the ecological land,especially the greening work in the urban construction area of the study area and the corridor construction of the ecological land plaque.Urumqi in the land use conversion,ecological landscape,ecological security pattern,ecological network aspects of the overall level is not high,to improve the space,it is recommended to strengthen the built-up area and the urban periphery of the ecological links and ecological land space scale.