Landscape change based on RS and GIS in the Jinghe Basin,China
Based on digital Landsat Thematic Mapper (TM/ETM+) (1986,1995,and 2000) imagery interpretation,landscape changes were analyzed in the Jinghe basin,one of the soil erosion regions in China,to provide basic data for local decision-making as well as sustainable landscape use and management.Results showed that landscape from 1986 to 2000 changed at the basin scale as the area of grassland,shrubland,sparse forestland,and water area decreased,while cropland,built-up land,unused land,other forestland,and forestland increased.Landscape changes mainly occurred in cropland,grassland,built-up land,shrubland,and sparse forestland.Moreover,the changes and area in cropland and grassland were the largest,influencing the whole characteristics of the changes in the Jinghe basin.Analysis of the changes between 1986 and 2000 in the study area indicated that bidirectional change between 1995 and 2000 was more obvious than between 1986 and 1995.But landscape use extent between 1986 and 1995 was bigger than between 1995 and 2000.Landscape developed continuously and transformed obviously before 1995,and which were in the regulation stage after 1995.Based on comparing characteristics between big and small remote sensing satellites,we thought that small satellite could be applied in landscape ecology and land use etc for its merit.We were in preparation for using and validating data from a small satellite in studying landscape changes and comparing the results with some results from a small satellite data.
Landscape change Jinghe basin loess plateau GIS
Yonghua Zhao Yi Guo Chaoqun Ma Zhimin Ma Tuansheng Li
College of Earth Science & Land Resources Management,Changan University,Xian 710054(China)
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）