%0 Journal Article
%T Temporal and spatial patterns of landscape in the Mu Us Sandland,Northern China<br>毛乌素沙地景观格局变化研究
%A WU Bo
%A CI Longjun
%A <br>吴波
%A 慈龙骏
%J 生态学报
%D 2001
%I 
%X Based on the landscape classification and cartography and the analyses of landscape patterns,the temporal and spatial patterns of landscape from the 1950s to the 1990s in the Mu Us Sandland,Northern China were investigated.The results show that since the 1950s the landscape in this area have undergone dramatic changes.The shifting and semi fixed sandy land expanded rapidly and fixed sandy land reduced fast.The area of farmland increased and that of grassland,willow and wetlands salinized and/or damp decreased significantly.In the landscape,both of shifting and fixed sandy land had the largest proportion in the 1950s,and the shifting sandy land occupied the dominant position irreproachable in the 1990s.As a consequence of desertification development,a significant change appeared in landscape patterns.The decrease of area of fixed sandy land was followed by patch fragmentation,the decrease of number of big patches and the increase of number of small patches.Accompanied with the increase of area of shifting sandy land,small patches associated with others to produce more big patches;on the other hand,shifting sandy land invaded into fixed and semi fixed sandy land to produce more small patches,so that the landscape was more fragmented.Irrational human activities seem to be the main driving forces for the desertification expansion and significant changes of landscape patterns.
%K the Mu Us Sandland
%K landscape dynamics
%K landscape patterns
%K landscape process
%K scale
%K desertification<br>毛乌素沙地
%K 景观动态
%K 景观格局
%K 景观过程
%K 尺度
%K 荒漠化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=BFCD4BC424A30E42&yid=14E7EF987E4155E6&vid=659D3B06EBF534A7&iid=0B39A22176CE99FB&sid=AC1578C6BB9EBDEF&eid=E0F6F365E4766526&journal_id=1000-0933&journal_name=生态学报&referenced_num=79&reference_num=28