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[1]FU Meng-di,MIAO Xu-hua,QUAN Zhan-jun,et al.Land Use Change and Its Ecological Effect in Qingyang City of Gansu Province[J].Research of Soil and Water Conservation,2014,21(06):240-244.

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Land Use Change and Its Ecological Effect in Qingyang City of Gansu Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 06 Page number: 240-244 Column: Public date: 2014-12-28

Title:: Land Use Change and Its Ecological Effect in Qingyang City of Gansu Province

Author(s):: FU Meng-di¹, MIAO Xu-hua², QUAN Zhan-jun¹, YE Yao^1,3, WANG Qi¹, LI Jun-sheng¹, XIAO Neng-wen¹; 1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. Institute of Environmental Science Research and Design of Gansu Province, Lanzhou 730000, China;
3. College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China

Keywords:: Qingyang; land use changes; landscape pattern; landscape spatial heterogeneity; ecological effects

CLC:: F301.2;X171.1

DOI:: -

Abstract:: In this paper, with the aid of the GIS technology and the software of Fragstas 4.0, Landsat/TM images of Qingyang city in 2005 and 2010 were selected to study the land use/cover change and its landscape ecological effects. The results showed that land use/cover of Qingyang had changed greatly within these periods. Land covers between various types were frequently transformed. The area of deciduous broad-leaved forest decreased greatly and was converted into shrubbery. The decrement area of deciduous broad-leaved forest is greater than increment area of shrubbery. The area of cropland decreased, while the area of grassland, residence and traffic land increased evidently. The number and mean size of patches were added in Qingyang. However, landscape richness, edge density and patch density reduced. The patch fragmentation and landscape spatial heterogeneity decreased and the tendency of homogenize of landscape Led to the decline of landscape stability. The decrease of edge effect of woodland and grassland Led to the function declined of landscape.

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