Monitoring by Remote Sensing of Habitat Quality Changes in Xianyang City
Zhao Mengyu;Xue Liang;School of Geography and Tourism,Shaanxi Normal University;National Demonstration Center for Experimental Geography Education(Shaanxi Normal University);
With the accelerating process of society,economy and urbanization,land use and landscape changes have gradually become important to make effects on regional habitat quality.It is necessary to further investigate those two effects,the result of which can provide a scientific basis for regional habitat conservation and reasonable utilization of land,then will be of great importance in habitat protection and development of the region.In this paper,the study area was located in Xianyang city,Shaanxi Province,which had the frequent human activities and obvious land use changes.Based on the classification of land use data which interpreted by remote sensing,supported by ArcGIS software,the land use transfer matrix of Xianyang from 2000 to 2010 was analyzed.Landscape metrics were calculated by the Fragstats software,which represented for the landscape pattern changes and spatial characteristics.The InVEST model was selected to evaluate habitat quality in study area.The habitat quality changes was monitored.The results indicate that the integrated land use dynamics of Xianyang city is 2.34%,and the changes of land use rate is slow.The main transition from cultivated land and grassland to forest and construction land,which cause the area of first two land use types reduced,and the latter two types increased.The degree of fragmentation and the complexity of structure in landscape are higher than before.Habitat quality improved slightly,and its overall spatial pattern is that central and north areas are relatively higher than the south.Area percentage of excellent,good and poor grades increase,while the habitat quality of medium grade significantly decline.Among 14 districts and counties of habitat quality in Xianyang city,Xunyi County is the best,and the improved magnitude of Liquan county is the most significant.The main driving force of habitat quality change is the transform of land use pattern.Therefore,the relevant departments of Xianyang city should continue to implement the ecological protection measures,and increase the intensity about the protection and management of environment.Thereby to promote the coordinated sustainable development of land use and habitats.
【Fund】： 国家科技基础性工作专项重点项目”黄土高原生态系统与环境变化考察”(2014FY210100);; 陕西省社发攻关项目“关中地区生态环境遥感本底调查与动态监测”(2013K14-01-03)
【CateGory Index】： X87
【CateGory Index】： X87