Landscape pattern change and prediction on county scale of west Songnen grasslands: A case study of Dumeng County
LI Yun-Beng-；Liu-Yong-Bing-；Wang-Ji-Beng-；Li-Hai-Long-；Zhang-Guo-Meng
1.College of Shanxi Forestry Technology,030009,Taiyuan;2.Environmental Protection Research Institute of Light Industry,100089,Beijing;3.Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences, 100085,Beijing;4.The Graduate School of Landscape Architecture,Peking
University,100871,Beijing;5.Institute of Loess Plateau,Shanxi University,030006,Taiyuan: China
Abstract：Landscape pattern change and prediction is very important for ecological land-use and plan.Based on 1979,1990 and 2004 TM datum,the landscape pattern of Tempo-spatial conversion,driving element analysis and its impact in the eco-environment in Dumeng County were studied in macro-scale by ERDAS 9.1,ArcGIS 9.2 and landscape ecology methods.The results showed that significant changes have taken place in the past 25 years.Grassland decreased rapidly from 1979 to 1990 and a increasing trend appeared from 1990 to 2004;field land increased rapidly and the rate of increasing fell in 1990 to 2004;water area changed periodically;bulrush land all along decreased,however salina land increased.Landscape fragmentation degree and fractal dimension increased,which implied the enhancement of landscape heterogeneity,the whole landscape take on instability trend.Landscape pattern predicted results by Markov model showed that the field land,grassland,water area,bulrush land will keep decreasing,while forest land,salina land and construction land would increase year after year.It was indicated that the eco-environment in the study area was very vulnerable and sensitive to the landscape pattern change.
李云平<sup>1</sup>；刘永兵<sup>2</sup>；王计平<sup>3</sup>；李海龙<sup>4</sup>；张国明<sup>5</sup>. 松嫩草原西部县域尺度景观格局变化及预测——以黑龙江省杜蒙县为例[J]. 中国水土保持科学, 2008, 6(6): 79-86.
LI Yun-Beng-；Liu-Yong-Bing-；Wang-Ji-Beng-；Li-Hai-Long-；Zhang-Guo-Meng. Landscape pattern change and prediction on county scale of west Songnen grasslands: A case study of Dumeng County. SSWCC, 2008, 6(6): 79-86.
2008, Vol. 6 
