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• W2027432847 abstract "Abstract Chose the arid interior district Shiyang River basin four issues of Landsat/TM images from 1986 to 2006 to visually interpret, and analyze the natural succession of ecological environment and the landscape pattern characteristic under the human activity interference. The results showed that in past 20 years, the number of landscape patch has increased, but the average patch size was decreasing, which explained that the landscape fragmentation degree was increasing, the landscape integrity was declining. The edge density of landscape remained invariable basically, which explained its stability maintained good. The diversity and evenness index continually enhanced, the diversity increased from 0.73 in 1986 to 0.84 in 2006. The mean core patch area of study area reduced from134.47 hm2 in 1994 to 127.67 hm2 in 2006, which indicated that the landscape core area was decreasing. On the one hand, it accelerated circulatory speed of species and reduced resistance of the energy flux. On the other hand it destroyed the integrity of the original landscape, easily caused the core area reducing continually, and led to vicious circle of the landscape separation. Seen from the whole study area, The utilization of landscape developed to the heterogeneous direction, indicated the proportional difference between various landscapes types was increasing, this kind of change has reflected the human activity’s influence to the whole landscape to a certain extent. It is believed that there are a series of landscape ecological problems such as low landscape ecological connectivity, simplified landscape structure and the more oasis fragmentation. In order to solve these problems, according to the principle that the movements of flow, energy and material in a landscape are related to some factors such as distance, time, impedance, etc., this study adopts the minimum accumulative resistance surface (MARS), the minimum cost resistance (MCR) model, and uses the surface diffusion technology to analyze compactness of landscape structure and the spatial difference of ecological function in Shiyang River basin. Then constructs some landscape components such as source, corridor and ecological node to strengthen the spatial connection of ecological network, and further discusses the landscape pattern optimization proposal." @default.
• W2027432847 created "2016-06-24" @default.
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• W2027432847 date "2009-09-01" @default.
• W2027432847 modified "2023-09-24" @default.
• W2027432847 title "Landscape pattern MACRS analysis and the optimal utilization of Shiyang River Basin based on RS and GIS approach" @default.
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• W2027432847 doi "https://doi.org/10.1016/j.chnaes.2009.08.003" @default.
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