The Evaluation Of Land Sustainable Use In Dujiangyan City Based On Landscape Pattern

The pattern of landscape ecology is the comprehensive embodiment of the regional ecological environment,that is the spatial structure characteristics.The study of landscape pattern characteristics in the region will help to grasp the relationship between land use and environment in this area and promote the layout and economic development of the overall landscape planning of the research area.On the other hand,land has significant spatial heterogeneity.To achieve sustainable land use,we need to keep the integrity of the ecosystem.Therefore,it is of practical significance to combine the landscape pattern analysis with the evaluation of sustainable land use,to reveal the inherent law of the land use in the study area and to put forward the rational proposal of the land use landscape ecological planning.The industry and tourism industry in Dujiangyan are equally important.There is large demand for urban land,the demand for land for infrastructure,the demand for farmland protection and the demand for ecological land.At the same time,there are some problems such as fragile ecological environment in some areas of Dujiangyan.Therefore,the evaluation of sustainable land use based on landscape pattern was carried out in Dujiangyan city to explore the intensive and efficient utilization of land in the region.Based on the analysis and summary of the existing research on sustainable land use,this paper takes Dujiangyan as the research object,and carries out comprehensive zoning for Dujiangyan.Under the support of GIS geographic information technology and Fragstats landscape pattern software,the change characteristics of land use and landscape patterns in various regions of Dujiangyan are analyzed.From the perspective of landscape pattern,the evaluation index system of sustainable land use in Dujiangyan is constructed,and the evaluation of land sustainable use based on landscape pattern is carried out.Based on the spatial pattern of landscape ecology,combined with the traditional time scale,this paper evaluates the sustainable land use in Dujiangyan.Finally,according to the existing problems of sustainable land use in Dujiangyan,the corresponding countermeasures and suggestions are put forward.The main conclusions of this paper are as follows:(1)The comprehensive degree of the District of Dujiangyan city land use change in 2010-2016 years has the following characteristics: the comprehensive index of land use degree from large to small order: Region III> Region ? > Region ?> Region ?> Region ?.In the past 2010-2016 years,the comprehensive degree of land use in Dujiangyan has shown an overall trend of increase,and the depth and breadth of land use have been increasing.On the whole in the development of land use in Dujiangyan City,and the closer to the rapid economic development of the city comprehensive index of land use degree is higher.(2)From 2010 to 2016,the change of landscape pattern in various regions of Dujiangyan city presents the following characteristics:(1)In Region ?,the dominant degree of woodland landscape is the highest,the diversity of landscape is on the rise,and the degree of landscape fragmentation is increasing.(2)In Region ?,the dominant degree of woodland landscape is the highest,the diversity of landscape is decreasing,and the degree of landscape fragmentation is decreasing gradually.(3)In Region III,the dominant degree of cultivated land landscape is the highest,the overall landscape diversity is on the rise,and the degree of landscape fragmentation gradually increases.(4)In Region ?,the dominant degree of woodland landscape is the highest,the overall landscape diversity is on the rise,and the degree of landscape fragmentation gradually increases.(5)In Region ?,the dominant degree of cultivated land landscape is the highest,the overall landscape diversity is on the rise,and the degree of landscape fragmentation is gradually increased.(3)The evaluation of sustainable land use landscape pattern in Dujiangyan city based on the results are as follows: the sustainable use of regional land level in Dujiangyan city from high to low order is: Region ? >Region III>Region ?>Region ? > Region ?.In the 2010-2016 years,(1)Region ? was at a basically sustainable stage,and the level of sustainable land use was decreasing.(2)Region ? is in a critical sustainable stage,and the level of sustainable land use is decreasing.(3)Region III is in a basically sustainable stage,and the level of sustainable land use is on the rise.(4)Region ? is in a critical sustainable stage,and the level of sustainable land use is on the rise.(5)Region ? is in a critical sustainable stage,and the level of sustainable land use is on the rise.(4)The countermeasures and suggestions for sustainable land use in Dujiangyan are as follows:(1)We should do a good job in forestry construction,make full and rational use of forest resources,and protect ecological resources.(2)We should improve the land output benefit and promote the sale and intensive management level of agricultural products.(3)We must adhere to the rational development of land resources,save and make intensive use of land,and strictly protect arable land.(4)Comprehensive development of tourism resources in this area is based on the mountainous characteristics and special ecological resources in the region.(5)Through the implementation of comprehensive land consolidation projects,we will promote the consolidation of rural residential areas.