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[1]MENG Yaoyao,XUE Lifang.Analysis on Landscape Pattern Change and Land Use in Nansi Lake Basin[J].Research of Soil and Water Conservation,2017,24(03):246-252.

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Analysis on Landscape Pattern Change and Land Use in Nansi Lake Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 03 Page number: 246-252 Column: Public date: 2017-06-28

Title:: Analysis on Landscape Pattern Change and Land Use in Nansi Lake Basin

Author(s):: MENG Yaoyao, XUE Lifang; School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China

Keywords:: land use change; landscape pattern; urbanization; Nansi lake basin

CLC:: F301.24

DOI:: -

Abstract:: Based on three sets of Landsat data (1987, 2000 and 2014), the land use information was extracted by using the software of ENVI, ArcGIS. The landscape indexes were figured out by analyzing the attribute data of the landscape classification map with the Fragstats software. The land use change and its impact on the landscape pattern were quantitatively analyzed in the Nansi Lake Basin. The results show that: (1) during the 30 years, the change of the land use in Nansi Lake Basin performed distinctly for the transformation of farmland to construction land. The areas of farmland decreased by 1 069.15 km² and construction land increased by 1 573.26 km². The comprehensive land use dynamic degree was 0.461% from 2000 to 2014, which is 4 times of that from 1987 to 2000; (2) on the landscape structure, farmland, as a dominated patch in basin, accounted for about 70%, percentage of landscape is reduced by 3.85%, and shape was complicated in 30 years; construction land was developed increasingly as an advantage patch, of which percentage of landscape was increased by 6.1%; the changes of farmland and construction land patches in landscape made the natural ecological function suffer more severe disturbance in basin; (3) the whole basin landscape was relatively integrated and the dominant patches were obvious, however, the spatial heterogeneity was higher and landscape connectivity was low. In the recent 30 years, the landscape structure dominated by relatively complete large patches, evolved into the pattern of the small circle patch perforated in large patches, and the landscape fragmentation was relatively severe.

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