a profound transformation of the earth's environment that is currently underway is primarily due to the numbers and activities of people. During the last 50 year,the human population has risen from two and a half to over six billion,and economic activity has increased tenfold.human transformation of the ecosystems and landscapes are the largest source of change in the natural system on earth,affecting the ability of the biosphere to sustain life. Intensification and diversification of land use have led to rapid changes in landscapes dynamics. land use and cover change study is core part of global land plan sponsored by IGBP and IHDP.