JOURNAL OF NATURAL RESOURCES ›› 2004, Vol. 19 ›› Issue (6): 776-785.doi: 10.11849/zrzyxb.2004.06.013

• Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS • Previous Articles     Next Articles

Landscape patterns analysis based on APACK for Ejin natural oasis

CAO Yu1, OU YangHua1, XIAO Duning2, CHEN Gao3   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Institute of Applied Ecology, CAS, Shenyang 110016, China;
    3. School of Environmental Sciences,Beijing Normal University,Beijing 100875,China
  • Received:2004-04-28 Revised:2004-05-28 Online:2004-12-25 Published:2004-12-25

Abstract: The Ejin natural oasis landscape lies in the lower reaches of the Heihe river basin in the arid interior regions of northwestern China.With decreasing water resources from the upper reaches of the Heihe river basin,many urgent ecological and environmental issues in the Ejin natural oasis have become more pressing in recent years.Analysis on landscape patterns not only can clarify the characteristics of the natural oasis landscape spatial structures,but also can provide a scientific basis for the study of the landscape degradation,protection and its sustainable development.Using remote sensing techniques,GIS,and landscape pattern analysis software APACK,the landscape patterns of Ejin natural oasis landscape are studied respectively from the aspects of area statistics,indices at landscape level,indices at classes level and indices between attribute classes based on Landsat 7 Enhanced Thematic Mapper plus data in 2001.Moreover,correlation analysis between different landscape indices is carried out with the integration of Ejin natural oasis landscape indices in 1987,1994 and 2001.Results show that: 1) typical"matrixcorri dor patch" landscape structure was shown in Ejin natural oasis landscape; 2) it was not steady for Ejin natural oasis landscape with high fragmentation,low landscape diversity,and coarse land scape texture; and 3) it was not independent of each other between different landscape indices,and the relations between some of the indices was obviously correlated with each other.Furthermore,the authors suggest that it should be careful to select some of the landscape indices during landscape patterns analysis.

Key words: landscape patterns, APACK, landscape indices, Ejin natural oasis