Analysis of dynamic spatial-temporal changes of landscape patterns in Hulunber meadow steppes——Taking Hailaer and surrounding areas as an example

Abstract

Abstract: The dynamic spatial-temporal changes of landscape patterns in and around Halaer were analysed. First, the research area was divided into water, sand, farmland, city, and grassland based on remote sensing images of 1986, 1991, 1996 and 2001, and on field investigations. Second, the grasslands were classified into highest coverage grassland, high coverage grassland, medium coverage grassland and low coverage grassland using a Normalized Difference Vegetation Index. Finally, the dynamic spatial-temporal changes of the eight kinds of landscape patterns were analyzed using landscape ecology principles. Human activities intensified significantly from 1986 to 2001 in the research area and the area of grassland landscape was rapidly reduced and the extent of fragmentation intensified. The dominant landscape in the research area changed from highest-high coverage grassland to medium-low coverage grassland. Expansion of the sand landscape was obvious in the periphery of roads, city and farmland while the grassland vegetation seriously degenerated. Fragmentation of the city landscape was reduced as patches decrease and became centralized. The economic development pattern of the research area is at a stage that is transforming from an extensive pattern to an intensive urbanization pattern.

CLC Number:

S812

ZHANG Hong-bin, YANG Gui-xia, HUANG Qing, LI Gang, CHEN Bao-rui, XIN Xiao-ping. Analysis of dynamic spatial-temporal changes of landscape patterns in Hulunber meadow steppes——Taking Hailaer and surrounding areas as an example[J]. Acta Prataculturae Sinica, 2009, 18(1): 134-143.

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