Impacts of human activity and natural change on the wetland landscape pattern along the Yellow River in Henan Province

Guofu, Liang; Ding, Shengyan

doi:10.1007/bf02837415

Cited by 16 publications

(1 citation statement)

References 7 publications

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“…The combination of these technologies becomes an available method to explore wetlands landscape evolution and detect its spatial changes (Saraf et al, 2000). Many studies have been focused on the spatially landscape pattern changes (Xue et al, 2004;Liang et al, 2004;Tang et al, 2005), however there are relatively few studies on temporal landscape evolution and driving forces (Song et al, 2008;Roshier et al, 2004;Bai et al, 2005;Xiao et al, 2010).…”

Section: Introductionmentioning

confidence: 98%

Investigating the dynamics of wetland landscape pattern in Beijing from 1984 to 2008

Zhang

Gong

et al. 2011

J. Geogr. Sci.

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The landscape pattern of Beijing wetlands has undergone a significant change as a result of natural and artificial elements. Supported by remote sensing and GIS technology, using multi-temporal TM images from 1984 to 2008 in Beijing, this paper analyzed the dynamic characteristics of wetlands landscape pattern through selected typical indices including patch area, patch average area, fractal dimension index, diversity, dominance, contagion indices and the spatial centroids of each wetlands type were calculated. Finally, the paper explored the evolution mode and driving factors of wetland landscape pattern. The results were obtained as follows: the total wetland area increased during the period 1984-1996, then decline from 1996 to 2004. The wetland area in 1994 accounted for only 47.37% of that in 2004. The proportion of artificial wetland area was larger than that of natural wetland. The proportion of reservoir wetland was 33.50% to 53.73% and had the maximum average area. pond and paddy field wetland type with the least average area accounted for 16.46% to 45.09% of the total wetland area. The driving forces of the natural river wetland were mainly natural elements; its fractal dimension index was greater than the others. The Shannon diversity index of wetland landscape increased from 1.11 in 1992 to 1.34 in 2004, indicating that the difference between proportions of each wetland type decreased and areas of each wetland type were evenly distributed. The contagion index went down from 65.59 to 58.41, indicating that the connectivity degraded. Miyun Reservoir had the largest area and its area change had a great impact on the location of the centroid. Wetland resources degenerated gradually from the joint effects of natural and artificial factors. During the period 2006-2008, the precipitation increased and the drought condition was relieved. The government implemented series of positive policies to save water resources, and the wetland area increased.

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