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[1]CHEN Jie,YANG Tai-bao,HE Yi.Analysis on Dynamic Characteristics of Landscape Patterns in Minqin of Shiyang River Downstream[J].Research of Soil and Water Conservation,2014,21(06):251-255.

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Analysis on Dynamic Characteristics of Landscape Patterns in Minqin of Shiyang River Downstream

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 06 Page number: 251-255 Column: Public date: 2014-12-28

Title:: Analysis on Dynamic Characteristics of Landscape Patterns in Minqin of Shiyang River Downstream

Author(s):: CHEN Jie, YANG Tai-bao, HE Yi; Institute of Glaciology and Ecogeography, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China

Keywords:: Shiyang River downstream; landscape; dynamic analysis; land use

CLC:: F321.1P901;X171.1

DOI:: -

Abstract:: The spatiotemporal changes of land use and cover of Minqin county in the lower reaches of Shiyang River during 1991 and 2001 were analyzed quantitatively by taking Landsat TM images as data sources and based on GIS and RS. At the same time, NP， PD，LPI ，MPS，SHDI, SHEI and Fi were used to analyze and evaluate the patch changes of desert，heavy saline soil，vegetation and saline-alkali soil. Analyses indicated that :(1) desertification landscapes counted for the largest proportion in the region, the proportion of saline-alkali soil and vegetation reduced in recent 20 years, while desertification expanded; (2) the overall regional landscape pattern and landscape fragmentation decreased and the degree of landscape heterogeneity decreased during 1991—2011, which indicated that the overall landscape pattern would be conducive to soil and water conservation; (3) various types of pattern analysis on landscape elements showed that levels of fragmentation of vegetation had been increasing, indicating that impacts of human activities on regional vegetation degree of interference were great.

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