Title :
The characteristics of land cover and macroscopical ecology changes in the Source Region of Three Rivers in Qinghai-Tibet plateau during last 30 years
Author :
Shao, Quanqin ; Zhao, Zhiping ; Liu, Jiyuan ; Fan, Jiangwen
Author_Institution :
Inst. of Geographic Sci. & Natural Resources Res., Chinese Acad. of Sci., Beijing, China
Abstract :
We obtained four phases of land cover spatial data sets by interpreting MSS images of middle and late 1970s and three phases of TM images of late 1980s, 2004 and 2008 based on field investigation in Three Rivers´ Source Region. We analyzed the temporal and spatial characteristics of land cover and macro ecological changes in Three Rivers´ Source Region in Qinghai-Tibet plateau since middle and late 1970s. Indicated by land cover condition index change rate and land cover change index, land cover and macroscopical ecological condition degenerated (7090 period Zc -0.63, LCCI -0.58)-obviously degenerated (9004 period, Zc -0.94, LCCI -1.76)-slightly meliorated (0408 period, Zc 0.06, LCCI 0.33). This course was jointly driven by climate change, grassland stocking pressure and implement of ecological construction project.
Keywords :
ecology; environmental monitoring (geophysics); vegetation mapping; China; MSS images; Qinghai-Tibet plateau; Three Rivers source region; land cover change index; land cover characteristics; land cover condition index change rate; land cover spatial data sets; macroscopical ecology changes; Degradation; Ecosystems; Indexes; Meteorology; Remote sensing; Rivers; Direction and extent of land cover change; Land cover change index; Land cover condition index; Three Rivers´ Source Region;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5651314
